Merge commit 'c95169f0ec68bdeeabc5fde8aa4076f406242524'

* commit 'c95169f0ec68bdeeabc5fde8aa4076f406242524':
  build: Move cli tool sources to a separate subdirectory

Merged-by: James Almer <jamrial@gmail.com>

17 files changed, 27478 insertions, 0 deletions

diff --git a/fftools/Makefile b/fftools/Makefile
new file mode 100644
index 0000000000..094f6d6265
--- /dev/null
+++ b/fftools/Makefile
@@ -0,0 +1,57 @@
+AVPROGS-$(CONFIG_FFMPEG)   += ffmpeg
+AVPROGS-$(CONFIG_FFPLAY)   += ffplay
+AVPROGS-$(CONFIG_FFPROBE)  += ffprobe
+AVPROGS-$(CONFIG_FFSERVER) += ffserver
+
+AVPROGS     := $(AVPROGS-yes:%=%$(PROGSSUF)$(EXESUF))
+PROGS       += $(AVPROGS)
+
+AVBASENAMES  = ffmpeg ffplay ffprobe ffserver
+ALLAVPROGS   = $(AVBASENAMES:%=%$(PROGSSUF)$(EXESUF))
+ALLAVPROGS_G = $(AVBASENAMES:%=%$(PROGSSUF)_g$(EXESUF))
+
+OBJS-ffmpeg                        += fftools/ffmpeg_opt.o fftools/ffmpeg_filter.o fftools/ffmpeg_hw.o
+OBJS-ffmpeg-$(CONFIG_CUVID)        += fftools/ffmpeg_cuvid.o
+OBJS-ffmpeg-$(CONFIG_LIBMFX)       += fftools/ffmpeg_qsv.o
+ifndef CONFIG_VIDEOTOOLBOX
+OBJS-ffmpeg-$(CONFIG_VDA)          += fftools/ffmpeg_videotoolbox.o
+endif
+OBJS-ffmpeg-$(CONFIG_VIDEOTOOLBOX) += fftools/ffmpeg_videotoolbox.o
+OBJS-ffserver                      += fftools/ffserver_config.o
+
+define DOFFTOOL
+OBJS-$(1)-$(CONFIG_OPENCL) += fftools/cmdutils_opencl.o
+OBJS-$(1) += fftools/cmdutils.o fftools/$(1).o $(OBJS-$(1)-yes)
+$(1)$(PROGSSUF)_g$(EXESUF): $$(OBJS-$(1))
+$$(OBJS-$(1)): | fftools
+$$(OBJS-$(1)): CFLAGS  += $(CFLAGS-$(1))
+$(1)$(PROGSSUF)_g$(EXESUF): LDFLAGS += $(LDFLAGS-$(1))
+$(1)$(PROGSSUF)_g$(EXESUF): FF_EXTRALIBS += $(EXTRALIBS-$(1))
+-include $$(OBJS-$(1):.o=.d)
+endef
+
+$(foreach P,$(AVPROGS-yes),$(eval $(call DOFFTOOL,$(P))))
+
+all: $(AVPROGS)
+
+fftools/ffprobe.o fftools/cmdutils.o: libavutil/ffversion.h | fftools
+OBJDIRS += fftools
+
+ifdef AVPROGS
+install: install-progs install-data
+endif
+
+install-progs-yes:
+install-progs-$(CONFIG_SHARED): install-libs
+
+install-progs: install-progs-yes $(AVPROGS)
+	$(Q)mkdir -p "$(BINDIR)"
+	$(INSTALL) -c -m 755 $(AVPROGS) "$(BINDIR)"
+
+uninstall: uninstall-progs
+
+uninstall-progs:
+	$(RM) $(addprefix "$(BINDIR)/", $(ALLAVPROGS))
+
+clean::
+	$(RM) $(ALLAVPROGS) $(ALLAVPROGS_G) $(CLEANSUFFIXES:%=fftools/%)
diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
new file mode 100644
index 0000000000..3d428f3eea
--- /dev/null
+++ b/fftools/cmdutils.c
@@ -0,0 +1,2274 @@
+/*
+ * Various utilities for command line tools
+ * Copyright (c) 2000-2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <string.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <math.h>
+
+/* Include only the enabled headers since some compilers (namely, Sun
+   Studio) will not omit unused inline functions and create undefined
+   references to libraries that are not being built. */
+
+#include "config.h"
+#include "compat/va_copy.h"
+#include "libavformat/avformat.h"
+#include "libavfilter/avfilter.h"
+#include "libavdevice/avdevice.h"
+#include "libavresample/avresample.h"
+#include "libswscale/swscale.h"
+#include "libswresample/swresample.h"
+#include "libpostproc/postprocess.h"
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/bprint.h"
+#include "libavutil/display.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/libm.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/eval.h"
+#include "libavutil/dict.h"
+#include "libavutil/opt.h"
+#include "libavutil/cpu.h"
+#include "libavutil/ffversion.h"
+#include "libavutil/version.h"
+#include "cmdutils.h"
+#if CONFIG_NETWORK
+#include "libavformat/network.h"
+#endif
+#if HAVE_SYS_RESOURCE_H
+#include <sys/time.h>
+#include <sys/resource.h>
+#endif
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+static int init_report(const char *env);
+
+AVDictionary *sws_dict;
+AVDictionary *swr_opts;
+AVDictionary *format_opts, *codec_opts, *resample_opts;
+
+static FILE *report_file;
+static int report_file_level = AV_LOG_DEBUG;
+int hide_banner = 0;
+
+enum show_muxdemuxers {
+    SHOW_DEFAULT,
+    SHOW_DEMUXERS,
+    SHOW_MUXERS,
+};
+
+void init_opts(void)
+{
+    av_dict_set(&sws_dict, "flags", "bicubic", 0);
+}
+
+void uninit_opts(void)
+{
+    av_dict_free(&swr_opts);
+    av_dict_free(&sws_dict);
+    av_dict_free(&format_opts);
+    av_dict_free(&codec_opts);
+    av_dict_free(&resample_opts);
+}
+
+void log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
+{
+    vfprintf(stdout, fmt, vl);
+}
+
+static void log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
+{
+    va_list vl2;
+    char line[1024];
+    static int print_prefix = 1;
+
+    va_copy(vl2, vl);
+    av_log_default_callback(ptr, level, fmt, vl);
+    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
+    va_end(vl2);
+    if (report_file_level >= level) {
+        fputs(line, report_file);
+        fflush(report_file);
+    }
+}
+
+void init_dynload(void)
+{
+#ifdef _WIN32
+    /* Calling SetDllDirectory with the empty string (but not NULL) removes the
+     * current working directory from the DLL search path as a security pre-caution. */
+    SetDllDirectory("");
+#endif
+}
+
+static void (*program_exit)(int ret);
+
+void register_exit(void (*cb)(int ret))
+{
+    program_exit = cb;
+}
+
+void exit_program(int ret)
+{
+    if (program_exit)
+        program_exit(ret);
+
+    exit(ret);
+}
+
+double parse_number_or_die(const char *context, const char *numstr, int type,
+                           double min, double max)
+{
+    char *tail;
+    const char *error;
+    double d = av_strtod(numstr, &tail);
+    if (*tail)
+        error = "Expected number for %s but found: %s\n";
+    else if (d < min || d > max)
+        error = "The value for %s was %s which is not within %f - %f\n";
+    else if (type == OPT_INT64 && (int64_t)d != d)
+        error = "Expected int64 for %s but found %s\n";
+    else if (type == OPT_INT && (int)d != d)
+        error = "Expected int for %s but found %s\n";
+    else
+        return d;
+    av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
+    exit_program(1);
+    return 0;
+}
+
+int64_t parse_time_or_die(const char *context, const char *timestr,
+                          int is_duration)
+{
+    int64_t us;
+    if (av_parse_time(&us, timestr, is_duration) < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid %s specification for %s: %s\n",
+               is_duration ? "duration" : "date", context, timestr);
+        exit_program(1);
+    }
+    return us;
+}
+
+void show_help_options(const OptionDef *options, const char *msg, int req_flags,
+                       int rej_flags, int alt_flags)
+{
+    const OptionDef *po;
+    int first;
+
+    first = 1;
+    for (po = options; po->name; po++) {
+        char buf[64];
+
+        if (((po->flags & req_flags) != req_flags) ||
+            (alt_flags && !(po->flags & alt_flags)) ||
+            (po->flags & rej_flags))
+            continue;
+
+        if (first) {
+            printf("%s\n", msg);
+            first = 0;
+        }
+        av_strlcpy(buf, po->name, sizeof(buf));
+        if (po->argname) {
+            av_strlcat(buf, " ", sizeof(buf));
+            av_strlcat(buf, po->argname, sizeof(buf));
+        }
+        printf("-%-17s  %s\n", buf, po->help);
+    }
+    printf("\n");
+}
+
+void show_help_children(const AVClass *class, int flags)
+{
+    const AVClass *child = NULL;
+    if (class->option) {
+        av_opt_show2(&class, NULL, flags, 0);
+        printf("\n");
+    }
+
+    while (child = av_opt_child_class_next(class, child))
+        show_help_children(child, flags);
+}
+
+static const OptionDef *find_option(const OptionDef *po, const char *name)
+{
+    const char *p = strchr(name, ':');
+    int len = p ? p - name : strlen(name);
+
+    while (po->name) {
+        if (!strncmp(name, po->name, len) && strlen(po->name) == len)
+            break;
+        po++;
+    }
+    return po;
+}
+
+/* _WIN32 means using the windows libc - cygwin doesn't define that
+ * by default. HAVE_COMMANDLINETOARGVW is true on cygwin, while
+ * it doesn't provide the actual command line via GetCommandLineW(). */
+#if HAVE_COMMANDLINETOARGVW && defined(_WIN32)
+#include <shellapi.h>
+/* Will be leaked on exit */
+static char** win32_argv_utf8 = NULL;
+static int win32_argc = 0;
+
+/**
+ * Prepare command line arguments for executable.
+ * For Windows - perform wide-char to UTF-8 conversion.
+ * Input arguments should be main() function arguments.
+ * @param argc_ptr Arguments number (including executable)
+ * @param argv_ptr Arguments list.
+ */
+static void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
+{
+    char *argstr_flat;
+    wchar_t **argv_w;
+    int i, buffsize = 0, offset = 0;
+
+    if (win32_argv_utf8) {
+        *argc_ptr = win32_argc;
+        *argv_ptr = win32_argv_utf8;
+        return;
+    }
+
+    win32_argc = 0;
+    argv_w = CommandLineToArgvW(GetCommandLineW(), &win32_argc);
+    if (win32_argc <= 0 || !argv_w)
+        return;
+
+    /* determine the UTF-8 buffer size (including NULL-termination symbols) */
+    for (i = 0; i < win32_argc; i++)
+        buffsize += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
+                                        NULL, 0, NULL, NULL);
+
+    win32_argv_utf8 = av_mallocz(sizeof(char *) * (win32_argc + 1) + buffsize);
+    argstr_flat     = (char *)win32_argv_utf8 + sizeof(char *) * (win32_argc + 1);
+    if (!win32_argv_utf8) {
+        LocalFree(argv_w);
+        return;
+    }
+
+    for (i = 0; i < win32_argc; i++) {
+        win32_argv_utf8[i] = &argstr_flat[offset];
+        offset += WideCharToMultiByte(CP_UTF8, 0, argv_w[i], -1,
+                                      &argstr_flat[offset],
+                                      buffsize - offset, NULL, NULL);
+    }
+    win32_argv_utf8[i] = NULL;
+    LocalFree(argv_w);
+
+    *argc_ptr = win32_argc;
+    *argv_ptr = win32_argv_utf8;
+}
+#else
+static inline void prepare_app_arguments(int *argc_ptr, char ***argv_ptr)
+{
+    /* nothing to do */
+}
+#endif /* HAVE_COMMANDLINETOARGVW */
+
+static int write_option(void *optctx, const OptionDef *po, const char *opt,
+                        const char *arg)
+{
+    /* new-style options contain an offset into optctx, old-style address of
+     * a global var*/
+    void *dst = po->flags & (OPT_OFFSET | OPT_SPEC) ?
+                (uint8_t *)optctx + po->u.off : po->u.dst_ptr;
+    int *dstcount;
+
+    if (po->flags & OPT_SPEC) {
+        SpecifierOpt **so = dst;
+        char *p = strchr(opt, ':');
+        char *str;
+
+        dstcount = (int *)(so + 1);
+        *so = grow_array(*so, sizeof(**so), dstcount, *dstcount + 1);
+        str = av_strdup(p ? p + 1 : "");
+        if (!str)
+            return AVERROR(ENOMEM);
+        (*so)[*dstcount - 1].specifier = str;
+        dst = &(*so)[*dstcount - 1].u;
+    }
+
+    if (po->flags & OPT_STRING) {
+        char *str;
+        str = av_strdup(arg);
+        av_freep(dst);
+        if (!str)
+            return AVERROR(ENOMEM);
+        *(char **)dst = str;
+    } else if (po->flags & OPT_BOOL || po->flags & OPT_INT) {
+        *(int *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
+    } else if (po->flags & OPT_INT64) {
+        *(int64_t *)dst = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
+    } else if (po->flags & OPT_TIME) {
+        *(int64_t *)dst = parse_time_or_die(opt, arg, 1);
+    } else if (po->flags & OPT_FLOAT) {
+        *(float *)dst = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
+    } else if (po->flags & OPT_DOUBLE) {
+        *(double *)dst = parse_number_or_die(opt, arg, OPT_DOUBLE, -INFINITY, INFINITY);
+    } else if (po->u.func_arg) {
+        int ret = po->u.func_arg(optctx, opt, arg);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Failed to set value '%s' for option '%s': %s\n",
+                   arg, opt, av_err2str(ret));
+            return ret;
+        }
+    }
+    if (po->flags & OPT_EXIT)
+        exit_program(0);
+
+    return 0;
+}
+
+int parse_option(void *optctx, const char *opt, const char *arg,
+                 const OptionDef *options)
+{
+    const OptionDef *po;
+    int ret;
+
+    po = find_option(options, opt);
+    if (!po->name && opt[0] == 'n' && opt[1] == 'o') {
+        /* handle 'no' bool option */
+        po = find_option(options, opt + 2);
+        if ((po->name && (po->flags & OPT_BOOL)))
+            arg = "0";
+    } else if (po->flags & OPT_BOOL)
+        arg = "1";
+
+    if (!po->name)
+        po = find_option(options, "default");
+    if (!po->name) {
+        av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'\n", opt);
+        return AVERROR(EINVAL);
+    }
+    if (po->flags & HAS_ARG && !arg) {
+        av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'\n", opt);
+        return AVERROR(EINVAL);
+    }
+
+    ret = write_option(optctx, po, opt, arg);
+    if (ret < 0)
+        return ret;
+
+    return !!(po->flags & HAS_ARG);
+}
+
+void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
+                   void (*parse_arg_function)(void *, const char*))
+{
+    const char *opt;
+    int optindex, handleoptions = 1, ret;
+
+    /* perform system-dependent conversions for arguments list */
+    prepare_app_arguments(&argc, &argv);
+
+    /* parse options */
+    optindex = 1;
+    while (optindex < argc) {
+        opt = argv[optindex++];
+
+        if (handleoptions && opt[0] == '-' && opt[1] != '\0') {
+            if (opt[1] == '-' && opt[2] == '\0') {
+                handleoptions = 0;
+                continue;
+            }
+            opt++;
+
+            if ((ret = parse_option(optctx, opt, argv[optindex], options)) < 0)
+                exit_program(1);
+            optindex += ret;
+        } else {
+            if (parse_arg_function)
+                parse_arg_function(optctx, opt);
+        }
+    }
+}
+
+int parse_optgroup(void *optctx, OptionGroup *g)
+{
+    int i, ret;
+
+    av_log(NULL, AV_LOG_DEBUG, "Parsing a group of options: %s %s.\n",
+           g->group_def->name, g->arg);
+
+    for (i = 0; i < g->nb_opts; i++) {
+        Option *o = &g->opts[i];
+
+        if (g->group_def->flags &&
+            !(g->group_def->flags & o->opt->flags)) {
+            av_log(NULL, AV_LOG_ERROR, "Option %s (%s) cannot be applied to "
+                   "%s %s -- you are trying to apply an input option to an "
+                   "output file or vice versa. Move this option before the "
+                   "file it belongs to.\n", o->key, o->opt->help,
+                   g->group_def->name, g->arg);
+            return AVERROR(EINVAL);
+        }
+
+        av_log(NULL, AV_LOG_DEBUG, "Applying option %s (%s) with argument %s.\n",
+               o->key, o->opt->help, o->val);
+
+        ret = write_option(optctx, o->opt, o->key, o->val);
+        if (ret < 0)
+            return ret;
+    }
+
+    av_log(NULL, AV_LOG_DEBUG, "Successfully parsed a group of options.\n");
+
+    return 0;
+}
+
+int locate_option(int argc, char **argv, const OptionDef *options,
+                  const char *optname)
+{
+    const OptionDef *po;
+    int i;
+
+    for (i = 1; i < argc; i++) {
+        const char *cur_opt = argv[i];
+
+        if (*cur_opt++ != '-')
+            continue;
+
+        po = find_option(options, cur_opt);
+        if (!po->name && cur_opt[0] == 'n' && cur_opt[1] == 'o')
+            po = find_option(options, cur_opt + 2);
+
+        if ((!po->name && !strcmp(cur_opt, optname)) ||
+             (po->name && !strcmp(optname, po->name)))
+            return i;
+
+        if (!po->name || po->flags & HAS_ARG)
+            i++;
+    }
+    return 0;
+}
+
+static void dump_argument(const char *a)
+{
+    const unsigned char *p;
+
+    for (p = a; *p; p++)
+        if (!((*p >= '+' && *p <= ':') || (*p >= '@' && *p <= 'Z') ||
+              *p == '_' || (*p >= 'a' && *p <= 'z')))
+            break;
+    if (!*p) {
+        fputs(a, report_file);
+        return;
+    }
+    fputc('"', report_file);
+    for (p = a; *p; p++) {
+        if (*p == '\\' || *p == '"' || *p == '$' || *p == '`')
+            fprintf(report_file, "\\%c", *p);
+        else if (*p < ' ' || *p > '~')
+            fprintf(report_file, "\\x%02x", *p);
+        else
+            fputc(*p, report_file);
+    }
+    fputc('"', report_file);
+}
+
+static void check_options(const OptionDef *po)
+{
+    while (po->name) {
+        if (po->flags & OPT_PERFILE)
+            av_assert0(po->flags & (OPT_INPUT | OPT_OUTPUT));
+        po++;
+    }
+}
+
+void parse_loglevel(int argc, char **argv, const OptionDef *options)
+{
+    int idx = locate_option(argc, argv, options, "loglevel");
+    const char *env;
+
+    check_options(options);
+
+    if (!idx)
+        idx = locate_option(argc, argv, options, "v");
+    if (idx && argv[idx + 1])
+        opt_loglevel(NULL, "loglevel", argv[idx + 1]);
+    idx = locate_option(argc, argv, options, "report");
+    if ((env = getenv("FFREPORT")) || idx) {
+        init_report(env);
+        if (report_file) {
+            int i;
+            fprintf(report_file, "Command line:\n");
+            for (i = 0; i < argc; i++) {
+                dump_argument(argv[i]);
+                fputc(i < argc - 1 ? ' ' : '\n', report_file);
+            }
+            fflush(report_file);
+        }
+    }
+    idx = locate_option(argc, argv, options, "hide_banner");
+    if (idx)
+        hide_banner = 1;
+}
+
+static const AVOption *opt_find(void *obj, const char *name, const char *unit,
+                            int opt_flags, int search_flags)
+{
+    const AVOption *o = av_opt_find(obj, name, unit, opt_flags, search_flags);
+    if(o && !o->flags)
+        return NULL;
+    return o;
+}
+
+#define FLAGS (o->type == AV_OPT_TYPE_FLAGS && (arg[0]=='-' || arg[0]=='+')) ? AV_DICT_APPEND : 0
+int opt_default(void *optctx, const char *opt, const char *arg)
+{
+    const AVOption *o;
+    int consumed = 0;
+    char opt_stripped[128];
+    const char *p;
+    const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
+#if CONFIG_AVRESAMPLE
+    const AVClass *rc = avresample_get_class();
+#endif
+#if CONFIG_SWSCALE
+    const AVClass *sc = sws_get_class();
+#endif
+#if CONFIG_SWRESAMPLE
+    const AVClass *swr_class = swr_get_class();
+#endif
+
+    if (!strcmp(opt, "debug") || !strcmp(opt, "fdebug"))
+        av_log_set_level(AV_LOG_DEBUG);
+
+    if (!(p = strchr(opt, ':')))
+        p = opt + strlen(opt);
+    av_strlcpy(opt_stripped, opt, FFMIN(sizeof(opt_stripped), p - opt + 1));
+
+    if ((o = opt_find(&cc, opt_stripped, NULL, 0,
+                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) ||
+        ((opt[0] == 'v' || opt[0] == 'a' || opt[0] == 's') &&
+         (o = opt_find(&cc, opt + 1, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)))) {
+        av_dict_set(&codec_opts, opt, arg, FLAGS);
+        consumed = 1;
+    }
+    if ((o = opt_find(&fc, opt, NULL, 0,
+                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
+        av_dict_set(&format_opts, opt, arg, FLAGS);
+        if (consumed)
+            av_log(NULL, AV_LOG_VERBOSE, "Routing option %s to both codec and muxer layer\n", opt);
+        consumed = 1;
+    }
+#if CONFIG_SWSCALE
+    if (!consumed && (o = opt_find(&sc, opt, NULL, 0,
+                         AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
+        struct SwsContext *sws = sws_alloc_context();
+        int ret = av_opt_set(sws, opt, arg, 0);
+        sws_freeContext(sws);
+        if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
+            !strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
+            !strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
+            av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
+            return AVERROR(EINVAL);
+        }
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
+            return ret;
+        }
+
+        av_dict_set(&sws_dict, opt, arg, FLAGS);
+
+        consumed = 1;
+    }
+#else
+    if (!consumed && !strcmp(opt, "sws_flags")) {
+        av_log(NULL, AV_LOG_WARNING, "Ignoring %s %s, due to disabled swscale\n", opt, arg);
+        consumed = 1;
+    }
+#endif
+#if CONFIG_SWRESAMPLE
+    if (!consumed && (o=opt_find(&swr_class, opt, NULL, 0,
+                                    AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
+        struct SwrContext *swr = swr_alloc();
+        int ret = av_opt_set(swr, opt, arg, 0);
+        swr_free(&swr);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
+            return ret;
+        }
+        av_dict_set(&swr_opts, opt, arg, FLAGS);
+        consumed = 1;
+    }
+#endif
+#if CONFIG_AVRESAMPLE
+    if ((o=opt_find(&rc, opt, NULL, 0,
+                       AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
+        av_dict_set(&resample_opts, opt, arg, FLAGS);
+        consumed = 1;
+    }
+#endif
+
+    if (consumed)
+        return 0;
+    return AVERROR_OPTION_NOT_FOUND;
+}
+
+/*
+ * Check whether given option is a group separator.
+ *
+ * @return index of the group definition that matched or -1 if none
+ */
+static int match_group_separator(const OptionGroupDef *groups, int nb_groups,
+                                 const char *opt)
+{
+    int i;
+
+    for (i = 0; i < nb_groups; i++) {
+        const OptionGroupDef *p = &groups[i];
+        if (p->sep && !strcmp(p->sep, opt))
+            return i;
+    }
+
+    return -1;
+}
+
+/*
+ * Finish parsing an option group.
+ *
+ * @param group_idx which group definition should this group belong to
+ * @param arg argument of the group delimiting option
+ */
+static void finish_group(OptionParseContext *octx, int group_idx,
+                         const char *arg)
+{
+    OptionGroupList *l = &octx->groups[group_idx];
+    OptionGroup *g;
+
+    GROW_ARRAY(l->groups, l->nb_groups);
+    g = &l->groups[l->nb_groups - 1];
+
+    *g             = octx->cur_group;
+    g->arg         = arg;
+    g->group_def   = l->group_def;
+    g->sws_dict    = sws_dict;
+    g->swr_opts    = swr_opts;
+    g->codec_opts  = codec_opts;
+    g->format_opts = format_opts;
+    g->resample_opts = resample_opts;
+
+    codec_opts  = NULL;
+    format_opts = NULL;
+    resample_opts = NULL;
+    sws_dict    = NULL;
+    swr_opts    = NULL;
+    init_opts();
+
+    memset(&octx->cur_group, 0, sizeof(octx->cur_group));
+}
+
+/*
+ * Add an option instance to currently parsed group.
+ */
+static void add_opt(OptionParseContext *octx, const OptionDef *opt,
+                    const char *key, const char *val)
+{
+    int global = !(opt->flags & (OPT_PERFILE | OPT_SPEC | OPT_OFFSET));
+    OptionGroup *g = global ? &octx->global_opts : &octx->cur_group;
+
+    GROW_ARRAY(g->opts, g->nb_opts);
+    g->opts[g->nb_opts - 1].opt = opt;
+    g->opts[g->nb_opts - 1].key = key;
+    g->opts[g->nb_opts - 1].val = val;
+}
+
+static void init_parse_context(OptionParseContext *octx,
+                               const OptionGroupDef *groups, int nb_groups)
+{
+    static const OptionGroupDef global_group = { "global" };
+    int i;
+
+    memset(octx, 0, sizeof(*octx));
+
+    octx->nb_groups = nb_groups;
+    octx->groups    = av_mallocz_array(octx->nb_groups, sizeof(*octx->groups));
+    if (!octx->groups)
+        exit_program(1);
+
+    for (i = 0; i < octx->nb_groups; i++)
+        octx->groups[i].group_def = &groups[i];
+
+    octx->global_opts.group_def = &global_group;
+    octx->global_opts.arg       = "";
+
+    init_opts();
+}
+
+void uninit_parse_context(OptionParseContext *octx)
+{
+    int i, j;
+
+    for (i = 0; i < octx->nb_groups; i++) {
+        OptionGroupList *l = &octx->groups[i];
+
+        for (j = 0; j < l->nb_groups; j++) {
+            av_freep(&l->groups[j].opts);
+            av_dict_free(&l->groups[j].codec_opts);
+            av_dict_free(&l->groups[j].format_opts);
+            av_dict_free(&l->groups[j].resample_opts);
+
+            av_dict_free(&l->groups[j].sws_dict);
+            av_dict_free(&l->groups[j].swr_opts);
+        }
+        av_freep(&l->groups);
+    }
+    av_freep(&octx->groups);
+
+    av_freep(&octx->cur_group.opts);
+    av_freep(&octx->global_opts.opts);
+
+    uninit_opts();
+}
+
+int split_commandline(OptionParseContext *octx, int argc, char *argv[],
+                      const OptionDef *options,
+                      const OptionGroupDef *groups, int nb_groups)
+{
+    int optindex = 1;
+    int dashdash = -2;
+
+    /* perform system-dependent conversions for arguments list */
+    prepare_app_arguments(&argc, &argv);
+
+    init_parse_context(octx, groups, nb_groups);
+    av_log(NULL, AV_LOG_DEBUG, "Splitting the commandline.\n");
+
+    while (optindex < argc) {
+        const char *opt = argv[optindex++], *arg;
+        const OptionDef *po;
+        int ret;
+
+        av_log(NULL, AV_LOG_DEBUG, "Reading option '%s' ...", opt);
+
+        if (opt[0] == '-' && opt[1] == '-' && !opt[2]) {
+            dashdash = optindex;
+            continue;
+        }
+        /* unnamed group separators, e.g. output filename */
+        if (opt[0] != '-' || !opt[1] || dashdash+1 == optindex) {
+            finish_group(octx, 0, opt);
+            av_log(NULL, AV_LOG_DEBUG, " matched as %s.\n", groups[0].name);
+            continue;
+        }
+        opt++;
+
+#define GET_ARG(arg)                                                           \
+do {                                                                           \
+    arg = argv[optindex++];                                                    \
+    if (!arg) {                                                                \
+        av_log(NULL, AV_LOG_ERROR, "Missing argument for option '%s'.\n", opt);\
+        return AVERROR(EINVAL);                                                \
+    }                                                                          \
+} while (0)
+
+        /* named group separators, e.g. -i */
+        if ((ret = match_group_separator(groups, nb_groups, opt)) >= 0) {
+            GET_ARG(arg);
+            finish_group(octx, ret, arg);
+            av_log(NULL, AV_LOG_DEBUG, " matched as %s with argument '%s'.\n",
+                   groups[ret].name, arg);
+            continue;
+        }
+
+        /* normal options */
+        po = find_option(options, opt);
+        if (po->name) {
+            if (po->flags & OPT_EXIT) {
+                /* optional argument, e.g. -h */
+                arg = argv[optindex++];
+            } else if (po->flags & HAS_ARG) {
+                GET_ARG(arg);
+            } else {
+                arg = "1";
+            }
+
+            add_opt(octx, po, opt, arg);
+            av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
+                   "argument '%s'.\n", po->name, po->help, arg);
+            continue;
+        }
+
+        /* AVOptions */
+        if (argv[optindex]) {
+            ret = opt_default(NULL, opt, argv[optindex]);
+            if (ret >= 0) {
+                av_log(NULL, AV_LOG_DEBUG, " matched as AVOption '%s' with "
+                       "argument '%s'.\n", opt, argv[optindex]);
+                optindex++;
+                continue;
+            } else if (ret != AVERROR_OPTION_NOT_FOUND) {
+                av_log(NULL, AV_LOG_ERROR, "Error parsing option '%s' "
+                       "with argument '%s'.\n", opt, argv[optindex]);
+                return ret;
+            }
+        }
+
+        /* boolean -nofoo options */
+        if (opt[0] == 'n' && opt[1] == 'o' &&
+            (po = find_option(options, opt + 2)) &&
+            po->name && po->flags & OPT_BOOL) {
+            add_opt(octx, po, opt, "0");
+            av_log(NULL, AV_LOG_DEBUG, " matched as option '%s' (%s) with "
+                   "argument 0.\n", po->name, po->help);
+            continue;
+        }
+
+        av_log(NULL, AV_LOG_ERROR, "Unrecognized option '%s'.\n", opt);
+        return AVERROR_OPTION_NOT_FOUND;
+    }
+
+    if (octx->cur_group.nb_opts || codec_opts || format_opts || resample_opts)
+        av_log(NULL, AV_LOG_WARNING, "Trailing options were found on the "
+               "commandline.\n");
+
+    av_log(NULL, AV_LOG_DEBUG, "Finished splitting the commandline.\n");
+
+    return 0;
+}
+
+int opt_cpuflags(void *optctx, const char *opt, const char *arg)
+{
+    int ret;
+    unsigned flags = av_get_cpu_flags();
+
+    if ((ret = av_parse_cpu_caps(&flags, arg)) < 0)
+        return ret;
+
+    av_force_cpu_flags(flags);
+    return 0;
+}
+
+int opt_loglevel(void *optctx, const char *opt, const char *arg)
+{
+    const struct { const char *name; int level; } log_levels[] = {
+        { "quiet"  , AV_LOG_QUIET   },
+        { "panic"  , AV_LOG_PANIC   },
+        { "fatal"  , AV_LOG_FATAL   },
+        { "error"  , AV_LOG_ERROR   },
+        { "warning", AV_LOG_WARNING },
+        { "info"   , AV_LOG_INFO    },
+        { "verbose", AV_LOG_VERBOSE },
+        { "debug"  , AV_LOG_DEBUG   },
+        { "trace"  , AV_LOG_TRACE   },
+    };
+    char *tail;
+    int level;
+    int flags;
+    int i;
+
+    flags = av_log_get_flags();
+    tail = strstr(arg, "repeat");
+    if (tail)
+        flags &= ~AV_LOG_SKIP_REPEATED;
+    else
+        flags |= AV_LOG_SKIP_REPEATED;
+
+    av_log_set_flags(flags);
+    if (tail == arg)
+        arg += 6 + (arg[6]=='+');
+    if(tail && !*arg)
+        return 0;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++) {
+        if (!strcmp(log_levels[i].name, arg)) {
+            av_log_set_level(log_levels[i].level);
+            return 0;
+        }
+    }
+
+    level = strtol(arg, &tail, 10);
+    if (*tail) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid loglevel \"%s\". "
+               "Possible levels are numbers or:\n", arg);
+        for (i = 0; i < FF_ARRAY_ELEMS(log_levels); i++)
+            av_log(NULL, AV_LOG_FATAL, "\"%s\"\n", log_levels[i].name);
+        exit_program(1);
+    }
+    av_log_set_level(level);
+    return 0;
+}
+
+static void expand_filename_template(AVBPrint *bp, const char *template,
+                                     struct tm *tm)
+{
+    int c;
+
+    while ((c = *(template++))) {
+        if (c == '%') {
+            if (!(c = *(template++)))
+                break;
+            switch (c) {
+            case 'p':
+                av_bprintf(bp, "%s", program_name);
+                break;
+            case 't':
+                av_bprintf(bp, "%04d%02d%02d-%02d%02d%02d",
+                           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+                           tm->tm_hour, tm->tm_min, tm->tm_sec);
+                break;
+            case '%':
+                av_bprint_chars(bp, c, 1);
+                break;
+            }
+        } else {
+            av_bprint_chars(bp, c, 1);
+        }
+    }
+}
+
+static int init_report(const char *env)
+{
+    char *filename_template = NULL;
+    char *key, *val;
+    int ret, count = 0;
+    time_t now;
+    struct tm *tm;
+    AVBPrint filename;
+
+    if (report_file) /* already opened */
+        return 0;
+    time(&now);
+    tm = localtime(&now);
+
+    while (env && *env) {
+        if ((ret = av_opt_get_key_value(&env, "=", ":", 0, &key, &val)) < 0) {
+            if (count)
+                av_log(NULL, AV_LOG_ERROR,
+                       "Failed to parse FFREPORT environment variable: %s\n",
+                       av_err2str(ret));
+            break;
+        }
+        if (*env)
+            env++;
+        count++;
+        if (!strcmp(key, "file")) {
+            av_free(filename_template);
+            filename_template = val;
+            val = NULL;
+        } else if (!strcmp(key, "level")) {
+            char *tail;
+            report_file_level = strtol(val, &tail, 10);
+            if (*tail) {
+                av_log(NULL, AV_LOG_FATAL, "Invalid report file level\n");
+                exit_program(1);
+            }
+        } else {
+            av_log(NULL, AV_LOG_ERROR, "Unknown key '%s' in FFREPORT\n", key);
+        }
+        av_free(val);
+        av_free(key);
+    }
+
+    av_bprint_init(&filename, 0, 1);
+    expand_filename_template(&filename,
+                             av_x_if_null(filename_template, "%p-%t.log"), tm);
+    av_free(filename_template);
+    if (!av_bprint_is_complete(&filename)) {
+        av_log(NULL, AV_LOG_ERROR, "Out of memory building report file name\n");
+        return AVERROR(ENOMEM);
+    }
+
+    report_file = fopen(filename.str, "w");
+    if (!report_file) {
+        int ret = AVERROR(errno);
+        av_log(NULL, AV_LOG_ERROR, "Failed to open report \"%s\": %s\n",
+               filename.str, strerror(errno));
+        return ret;
+    }
+    av_log_set_callback(log_callback_report);
+    av_log(NULL, AV_LOG_INFO,
+           "%s started on %04d-%02d-%02d at %02d:%02d:%02d\n"
+           "Report written to \"%s\"\n",
+           program_name,
+           tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+           tm->tm_hour, tm->tm_min, tm->tm_sec,
+           filename.str);
+    av_bprint_finalize(&filename, NULL);
+    return 0;
+}
+
+int opt_report(const char *opt)
+{
+    return init_report(NULL);
+}
+
+int opt_max_alloc(void *optctx, const char *opt, const char *arg)
+{
+    char *tail;
+    size_t max;
+
+    max = strtol(arg, &tail, 10);
+    if (*tail) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid max_alloc \"%s\".\n", arg);
+        exit_program(1);
+    }
+    av_max_alloc(max);
+    return 0;
+}
+
+int opt_timelimit(void *optctx, const char *opt, const char *arg)
+{
+#if HAVE_SETRLIMIT
+    int lim = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
+    struct rlimit rl = { lim, lim + 1 };
+    if (setrlimit(RLIMIT_CPU, &rl))
+        perror("setrlimit");
+#else
+    av_log(NULL, AV_LOG_WARNING, "-%s not implemented on this OS\n", opt);
+#endif
+    return 0;
+}
+
+void print_error(const char *filename, int err)
+{
+    char errbuf[128];
+    const char *errbuf_ptr = errbuf;
+
+    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
+        errbuf_ptr = strerror(AVUNERROR(err));
+    av_log(NULL, AV_LOG_ERROR, "%s: %s\n", filename, errbuf_ptr);
+}
+
+static int warned_cfg = 0;
+
+#define INDENT        1
+#define SHOW_VERSION  2
+#define SHOW_CONFIG   4
+#define SHOW_COPYRIGHT 8
+
+#define PRINT_LIB_INFO(libname, LIBNAME, flags, level)                  \
+    if (CONFIG_##LIBNAME) {                                             \
+        const char *indent = flags & INDENT? "  " : "";                 \
+        if (flags & SHOW_VERSION) {                                     \
+            unsigned int version = libname##_version();                 \
+            av_log(NULL, level,                                         \
+                   "%slib%-11s %2d.%3d.%3d / %2d.%3d.%3d\n",            \
+                   indent, #libname,                                    \
+                   LIB##LIBNAME##_VERSION_MAJOR,                        \
+                   LIB##LIBNAME##_VERSION_MINOR,                        \
+                   LIB##LIBNAME##_VERSION_MICRO,                        \
+                   AV_VERSION_MAJOR(version), AV_VERSION_MINOR(version),\
+                   AV_VERSION_MICRO(version));                          \
+        }                                                               \
+        if (flags & SHOW_CONFIG) {                                      \
+            const char *cfg = libname##_configuration();                \
+            if (strcmp(FFMPEG_CONFIGURATION, cfg)) {                    \
+                if (!warned_cfg) {                                      \
+                    av_log(NULL, level,                                 \
+                            "%sWARNING: library configuration mismatch\n", \
+                            indent);                                    \
+                    warned_cfg = 1;                                     \
+                }                                                       \
+                av_log(NULL, level, "%s%-11s configuration: %s\n",      \
+                        indent, #libname, cfg);                         \
+            }                                                           \
+        }                                                               \
+    }                                                                   \
+
+static void print_all_libs_info(int flags, int level)
+{
+    PRINT_LIB_INFO(avutil,     AVUTIL,     flags, level);
+    PRINT_LIB_INFO(avcodec,    AVCODEC,    flags, level);
+    PRINT_LIB_INFO(avformat,   AVFORMAT,   flags, level);
+    PRINT_LIB_INFO(avdevice,   AVDEVICE,   flags, level);
+    PRINT_LIB_INFO(avfilter,   AVFILTER,   flags, level);
+    PRINT_LIB_INFO(avresample, AVRESAMPLE, flags, level);
+    PRINT_LIB_INFO(swscale,    SWSCALE,    flags, level);
+    PRINT_LIB_INFO(swresample, SWRESAMPLE, flags, level);
+    PRINT_LIB_INFO(postproc,   POSTPROC,   flags, level);
+}
+
+static void print_program_info(int flags, int level)
+{
+    const char *indent = flags & INDENT? "  " : "";
+
+    av_log(NULL, level, "%s version " FFMPEG_VERSION, program_name);
+    if (flags & SHOW_COPYRIGHT)
+        av_log(NULL, level, " Copyright (c) %d-%d the FFmpeg developers",
+               program_birth_year, CONFIG_THIS_YEAR);
+    av_log(NULL, level, "\n");
+    av_log(NULL, level, "%sbuilt with %s\n", indent, CC_IDENT);
+
+    av_log(NULL, level, "%sconfiguration: " FFMPEG_CONFIGURATION "\n", indent);
+}
+
+static void print_buildconf(int flags, int level)
+{
+    const char *indent = flags & INDENT ? "  " : "";
+    char str[] = { FFMPEG_CONFIGURATION };
+    char *conflist, *remove_tilde, *splitconf;
+
+    // Change all the ' --' strings to '~--' so that
+    // they can be identified as tokens.
+    while ((conflist = strstr(str, " --")) != NULL) {
+        strncpy(conflist, "~--", 3);
+    }
+
+    // Compensate for the weirdness this would cause
+    // when passing 'pkg-config --static'.
+    while ((remove_tilde = strstr(str, "pkg-config~")) != NULL) {
+        strncpy(remove_tilde, "pkg-config ", 11);
+    }
+
+    splitconf = strtok(str, "~");
+    av_log(NULL, level, "\n%sconfiguration:\n", indent);
+    while (splitconf != NULL) {
+        av_log(NULL, level, "%s%s%s\n", indent, indent, splitconf);
+        splitconf = strtok(NULL, "~");
+    }
+}
+
+void show_banner(int argc, char **argv, const OptionDef *options)
+{
+    int idx = locate_option(argc, argv, options, "version");
+    if (hide_banner || idx)
+        return;
+
+    print_program_info (INDENT|SHOW_COPYRIGHT, AV_LOG_INFO);
+    print_all_libs_info(INDENT|SHOW_CONFIG,  AV_LOG_INFO);
+    print_all_libs_info(INDENT|SHOW_VERSION, AV_LOG_INFO);
+}
+
+int show_version(void *optctx, const char *opt, const char *arg)
+{
+    av_log_set_callback(log_callback_help);
+    print_program_info (SHOW_COPYRIGHT, AV_LOG_INFO);
+    print_all_libs_info(SHOW_VERSION, AV_LOG_INFO);
+
+    return 0;
+}
+
+int show_buildconf(void *optctx, const char *opt, const char *arg)
+{
+    av_log_set_callback(log_callback_help);
+    print_buildconf      (INDENT|0, AV_LOG_INFO);
+
+    return 0;
+}
+
+int show_license(void *optctx, const char *opt, const char *arg)
+{
+#if CONFIG_NONFREE
+    printf(
+    "This version of %s has nonfree parts compiled in.\n"
+    "Therefore it is not legally redistributable.\n",
+    program_name );
+#elif CONFIG_GPLV3
+    printf(
+    "%s is free software; you can redistribute it and/or modify\n"
+    "it under the terms of the GNU General Public License as published by\n"
+    "the Free Software Foundation; either version 3 of the License, or\n"
+    "(at your option) any later version.\n"
+    "\n"
+    "%s is distributed in the hope that it will be useful,\n"
+    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+    "GNU General Public License for more details.\n"
+    "\n"
+    "You should have received a copy of the GNU General Public License\n"
+    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",
+    program_name, program_name, program_name );
+#elif CONFIG_GPL
+    printf(
+    "%s is free software; you can redistribute it and/or modify\n"
+    "it under the terms of the GNU General Public License as published by\n"
+    "the Free Software Foundation; either version 2 of the License, or\n"
+    "(at your option) any later version.\n"
+    "\n"
+    "%s is distributed in the hope that it will be useful,\n"
+    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+    "GNU General Public License for more details.\n"
+    "\n"
+    "You should have received a copy of the GNU General Public License\n"
+    "along with %s; if not, write to the Free Software\n"
+    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
+    program_name, program_name, program_name );
+#elif CONFIG_LGPLV3
+    printf(
+    "%s is free software; you can redistribute it and/or modify\n"
+    "it under the terms of the GNU Lesser General Public License as published by\n"
+    "the Free Software Foundation; either version 3 of the License, or\n"
+    "(at your option) any later version.\n"
+    "\n"
+    "%s is distributed in the hope that it will be useful,\n"
+    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+    "GNU Lesser General Public License for more details.\n"
+    "\n"
+    "You should have received a copy of the GNU Lesser General Public License\n"
+    "along with %s.  If not, see <http://www.gnu.org/licenses/>.\n",
+    program_name, program_name, program_name );
+#else
+    printf(
+    "%s is free software; you can redistribute it and/or\n"
+    "modify it under the terms of the GNU Lesser General Public\n"
+    "License as published by the Free Software Foundation; either\n"
+    "version 2.1 of the License, or (at your option) any later version.\n"
+    "\n"
+    "%s is distributed in the hope that it will be useful,\n"
+    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n"
+    "Lesser General Public License for more details.\n"
+    "\n"
+    "You should have received a copy of the GNU Lesser General Public\n"
+    "License along with %s; if not, write to the Free Software\n"
+    "Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\n",
+    program_name, program_name, program_name );
+#endif
+
+    return 0;
+}
+
+static int is_device(const AVClass *avclass)
+{
+    if (!avclass)
+        return 0;
+    return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
+}
+
+static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
+{
+    AVInputFormat *ifmt  = NULL;
+    AVOutputFormat *ofmt = NULL;
+    const char *last_name;
+    int is_dev;
+
+    printf("%s\n"
+           " D. = Demuxing supported\n"
+           " .E = Muxing supported\n"
+           " --\n", device_only ? "Devices:" : "File formats:");
+    last_name = "000";
+    for (;;) {
+        int decode = 0;
+        int encode = 0;
+        const char *name      = NULL;
+        const char *long_name = NULL;
+
+        if (muxdemuxers !=SHOW_DEMUXERS) {
+            while ((ofmt = av_oformat_next(ofmt))) {
+                is_dev = is_device(ofmt->priv_class);
+                if (!is_dev && device_only)
+                    continue;
+                if ((!name || strcmp(ofmt->name, name) < 0) &&
+                    strcmp(ofmt->name, last_name) > 0) {
+                    name      = ofmt->name;
+                    long_name = ofmt->long_name;
+                    encode    = 1;
+                }
+            }
+        }
+        if (muxdemuxers != SHOW_MUXERS) {
+            while ((ifmt = av_iformat_next(ifmt))) {
+                is_dev = is_device(ifmt->priv_class);
+                if (!is_dev && device_only)
+                    continue;
+                if ((!name || strcmp(ifmt->name, name) < 0) &&
+                    strcmp(ifmt->name, last_name) > 0) {
+                    name      = ifmt->name;
+                    long_name = ifmt->long_name;
+                    encode    = 0;
+                }
+                if (name && strcmp(ifmt->name, name) == 0)
+                    decode = 1;
+            }
+        }
+        if (!name)
+            break;
+        last_name = name;
+
+        printf(" %s%s %-15s %s\n",
+               decode ? "D" : " ",
+               encode ? "E" : " ",
+               name,
+            long_name ? long_name:" ");
+    }
+    return 0;
+}
+
+int show_formats(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
+}
+
+int show_muxers(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
+}
+
+int show_demuxers(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
+}
+
+int show_devices(void *optctx, const char *opt, const char *arg)
+{
+    return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
+}
+
+#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
+    if (codec->field) {                                                      \
+        const type *p = codec->field;                                        \
+                                                                             \
+        printf("    Supported " list_name ":");                              \
+        while (*p != term) {                                                 \
+            get_name(*p);                                                    \
+            printf(" %s", name);                                             \
+            p++;                                                             \
+        }                                                                    \
+        printf("\n");                                                        \
+    }                                                                        \
+
+static void print_codec(const AVCodec *c)
+{
+    int encoder = av_codec_is_encoder(c);
+
+    printf("%s %s [%s]:\n", encoder ? "Encoder" : "Decoder", c->name,
+           c->long_name ? c->long_name : "");
+
+    printf("    General capabilities: ");
+    if (c->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)
+        printf("horizband ");
+    if (c->capabilities & AV_CODEC_CAP_DR1)
+        printf("dr1 ");
+    if (c->capabilities & AV_CODEC_CAP_TRUNCATED)
+        printf("trunc ");
+    if (c->capabilities & AV_CODEC_CAP_DELAY)
+        printf("delay ");
+    if (c->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME)
+        printf("small ");
+    if (c->capabilities & AV_CODEC_CAP_SUBFRAMES)
+        printf("subframes ");
+    if (c->capabilities & AV_CODEC_CAP_EXPERIMENTAL)
+        printf("exp ");
+    if (c->capabilities & AV_CODEC_CAP_CHANNEL_CONF)
+        printf("chconf ");
+    if (c->capabilities & AV_CODEC_CAP_PARAM_CHANGE)
+        printf("paramchange ");
+    if (c->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
+        printf("variable ");
+    if (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
+                           AV_CODEC_CAP_SLICE_THREADS |
+                           AV_CODEC_CAP_AUTO_THREADS))
+        printf("threads ");
+    if (!c->capabilities)
+        printf("none");
+    printf("\n");
+
+    if (c->type == AVMEDIA_TYPE_VIDEO ||
+        c->type == AVMEDIA_TYPE_AUDIO) {
+        printf("    Threading capabilities: ");
+        switch (c->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
+                                   AV_CODEC_CAP_SLICE_THREADS |
+                                   AV_CODEC_CAP_AUTO_THREADS)) {
+        case AV_CODEC_CAP_FRAME_THREADS |
+             AV_CODEC_CAP_SLICE_THREADS: printf("frame and slice"); break;
+        case AV_CODEC_CAP_FRAME_THREADS: printf("frame");           break;
+        case AV_CODEC_CAP_SLICE_THREADS: printf("slice");           break;
+        case AV_CODEC_CAP_AUTO_THREADS : printf("auto");            break;
+        default:                         printf("none");            break;
+        }
+        printf("\n");
+    }
+
+    if (c->supported_framerates) {
+        const AVRational *fps = c->supported_framerates;
+
+        printf("    Supported framerates:");
+        while (fps->num) {
+            printf(" %d/%d", fps->num, fps->den);
+            fps++;
+        }
+        printf("\n");
+    }
+    PRINT_CODEC_SUPPORTED(c, pix_fmts, enum AVPixelFormat, "pixel formats",
+                          AV_PIX_FMT_NONE, GET_PIX_FMT_NAME);
+    PRINT_CODEC_SUPPORTED(c, supported_samplerates, int, "sample rates", 0,
+                          GET_SAMPLE_RATE_NAME);
+    PRINT_CODEC_SUPPORTED(c, sample_fmts, enum AVSampleFormat, "sample formats",
+                          AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME);
+    PRINT_CODEC_SUPPORTED(c, channel_layouts, uint64_t, "channel layouts",
+                          0, GET_CH_LAYOUT_DESC);
+
+    if (c->priv_class) {
+        show_help_children(c->priv_class,
+                           AV_OPT_FLAG_ENCODING_PARAM |
+                           AV_OPT_FLAG_DECODING_PARAM);
+    }
+}
+
+static char get_media_type_char(enum AVMediaType type)
+{
+    switch (type) {
+        case AVMEDIA_TYPE_VIDEO:    return 'V';
+        case AVMEDIA_TYPE_AUDIO:    return 'A';
+        case AVMEDIA_TYPE_DATA:     return 'D';
+        case AVMEDIA_TYPE_SUBTITLE: return 'S';
+        case AVMEDIA_TYPE_ATTACHMENT:return 'T';
+        default:                    return '?';
+    }
+}
+
+static const AVCodec *next_codec_for_id(enum AVCodecID id, const AVCodec *prev,
+                                        int encoder)
+{
+    while ((prev = av_codec_next(prev))) {
+        if (prev->id == id &&
+            (encoder ? av_codec_is_encoder(prev) : av_codec_is_decoder(prev)))
+            return prev;
+    }
+    return NULL;
+}
+
+static int compare_codec_desc(const void *a, const void *b)
+{
+    const AVCodecDescriptor * const *da = a;
+    const AVCodecDescriptor * const *db = b;
+
+    return (*da)->type != (*db)->type ? FFDIFFSIGN((*da)->type, (*db)->type) :
+           strcmp((*da)->name, (*db)->name);
+}
+
+static unsigned get_codecs_sorted(const AVCodecDescriptor ***rcodecs)
+{
+    const AVCodecDescriptor *desc = NULL;
+    const AVCodecDescriptor **codecs;
+    unsigned nb_codecs = 0, i = 0;
+
+    while ((desc = avcodec_descriptor_next(desc)))
+        nb_codecs++;
+    if (!(codecs = av_calloc(nb_codecs, sizeof(*codecs)))) {
+        av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
+        exit_program(1);
+    }
+    desc = NULL;
+    while ((desc = avcodec_descriptor_next(desc)))
+        codecs[i++] = desc;
+    av_assert0(i == nb_codecs);
+    qsort(codecs, nb_codecs, sizeof(*codecs), compare_codec_desc);
+    *rcodecs = codecs;
+    return nb_codecs;
+}
+
+static void print_codecs_for_id(enum AVCodecID id, int encoder)
+{
+    const AVCodec *codec = NULL;
+
+    printf(" (%s: ", encoder ? "encoders" : "decoders");
+
+    while ((codec = next_codec_for_id(id, codec, encoder)))
+        printf("%s ", codec->name);
+
+    printf(")");
+}
+
+int show_codecs(void *optctx, const char *opt, const char *arg)
+{
+    const AVCodecDescriptor **codecs;
+    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
+
+    printf("Codecs:\n"
+           " D..... = Decoding supported\n"
+           " .E.... = Encoding supported\n"
+           " ..V... = Video codec\n"
+           " ..A... = Audio codec\n"
+           " ..S... = Subtitle codec\n"
+           " ...I.. = Intra frame-only codec\n"
+           " ....L. = Lossy compression\n"
+           " .....S = Lossless compression\n"
+           " -------\n");
+    for (i = 0; i < nb_codecs; i++) {
+        const AVCodecDescriptor *desc = codecs[i];
+        const AVCodec *codec = NULL;
+
+        if (strstr(desc->name, "_deprecated"))
+            continue;
+
+        printf(" ");
+        printf(avcodec_find_decoder(desc->id) ? "D" : ".");
+        printf(avcodec_find_encoder(desc->id) ? "E" : ".");
+
+        printf("%c", get_media_type_char(desc->type));
+        printf((desc->props & AV_CODEC_PROP_INTRA_ONLY) ? "I" : ".");
+        printf((desc->props & AV_CODEC_PROP_LOSSY)      ? "L" : ".");
+        printf((desc->props & AV_CODEC_PROP_LOSSLESS)   ? "S" : ".");
+
+        printf(" %-20s %s", desc->name, desc->long_name ? desc->long_name : "");
+
+        /* print decoders/encoders when there's more than one or their
+         * names are different from codec name */
+        while ((codec = next_codec_for_id(desc->id, codec, 0))) {
+            if (strcmp(codec->name, desc->name)) {
+                print_codecs_for_id(desc->id, 0);
+                break;
+            }
+        }
+        codec = NULL;
+        while ((codec = next_codec_for_id(desc->id, codec, 1))) {
+            if (strcmp(codec->name, desc->name)) {
+                print_codecs_for_id(desc->id, 1);
+                break;
+            }
+        }
+
+        printf("\n");
+    }
+    av_free(codecs);
+    return 0;
+}
+
+static void print_codecs(int encoder)
+{
+    const AVCodecDescriptor **codecs;
+    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
+
+    printf("%s:\n"
+           " V..... = Video\n"
+           " A..... = Audio\n"
+           " S..... = Subtitle\n"
+           " .F.... = Frame-level multithreading\n"
+           " ..S... = Slice-level multithreading\n"
+           " ...X.. = Codec is experimental\n"
+           " ....B. = Supports draw_horiz_band\n"
+           " .....D = Supports direct rendering method 1\n"
+           " ------\n",
+           encoder ? "Encoders" : "Decoders");
+    for (i = 0; i < nb_codecs; i++) {
+        const AVCodecDescriptor *desc = codecs[i];
+        const AVCodec *codec = NULL;
+
+        while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
+            printf(" %c", get_media_type_char(desc->type));
+            printf((codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) ? "F" : ".");
+            printf((codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) ? "S" : ".");
+            printf((codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL)  ? "X" : ".");
+            printf((codec->capabilities & AV_CODEC_CAP_DRAW_HORIZ_BAND)?"B" : ".");
+            printf((codec->capabilities & AV_CODEC_CAP_DR1)           ? "D" : ".");
+
+            printf(" %-20s %s", codec->name, codec->long_name ? codec->long_name : "");
+            if (strcmp(codec->name, desc->name))
+                printf(" (codec %s)", desc->name);
+
+            printf("\n");
+        }
+    }
+    av_free(codecs);
+}
+
+int show_decoders(void *optctx, const char *opt, const char *arg)
+{
+    print_codecs(0);
+    return 0;
+}
+
+int show_encoders(void *optctx, const char *opt, const char *arg)
+{
+    print_codecs(1);
+    return 0;
+}
+
+int show_bsfs(void *optctx, const char *opt, const char *arg)
+{
+    const AVBitStreamFilter *bsf = NULL;
+    void *opaque = NULL;
+
+    printf("Bitstream filters:\n");
+    while ((bsf = av_bsf_next(&opaque)))
+        printf("%s\n", bsf->name);
+    printf("\n");
+    return 0;
+}
+
+int show_protocols(void *optctx, const char *opt, const char *arg)
+{
+    void *opaque = NULL;
+    const char *name;
+
+    printf("Supported file protocols:\n"
+           "Input:\n");
+    while ((name = avio_enum_protocols(&opaque, 0)))
+        printf("  %s\n", name);
+    printf("Output:\n");
+    while ((name = avio_enum_protocols(&opaque, 1)))
+        printf("  %s\n", name);
+    return 0;
+}
+
+int show_filters(void *optctx, const char *opt, const char *arg)
+{
+#if CONFIG_AVFILTER
+    const AVFilter *filter = NULL;
+    char descr[64], *descr_cur;
+    int i, j;
+    const AVFilterPad *pad;
+
+    printf("Filters:\n"
+           "  T.. = Timeline support\n"
+           "  .S. = Slice threading\n"
+           "  ..C = Command support\n"
+           "  A = Audio input/output\n"
+           "  V = Video input/output\n"
+           "  N = Dynamic number and/or type of input/output\n"
+           "  | = Source or sink filter\n");
+    while ((filter = avfilter_next(filter))) {
+        descr_cur = descr;
+        for (i = 0; i < 2; i++) {
+            if (i) {
+                *(descr_cur++) = '-';
+                *(descr_cur++) = '>';
+            }
+            pad = i ? filter->outputs : filter->inputs;
+            for (j = 0; pad && avfilter_pad_get_name(pad, j); j++) {
+                if (descr_cur >= descr + sizeof(descr) - 4)
+                    break;
+                *(descr_cur++) = get_media_type_char(avfilter_pad_get_type(pad, j));
+            }
+            if (!j)
+                *(descr_cur++) = ((!i && (filter->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)) ||
+                                  ( i && (filter->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS))) ? 'N' : '|';
+        }
+        *descr_cur = 0;
+        printf(" %c%c%c %-17s %-10s %s\n",
+               filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE ? 'T' : '.',
+               filter->flags & AVFILTER_FLAG_SLICE_THREADS    ? 'S' : '.',
+               filter->process_command                        ? 'C' : '.',
+               filter->name, descr, filter->description);
+    }
+#else
+    printf("No filters available: libavfilter disabled\n");
+#endif
+    return 0;
+}
+
+int show_colors(void *optctx, const char *opt, const char *arg)
+{
+    const char *name;
+    const uint8_t *rgb;
+    int i;
+
+    printf("%-32s #RRGGBB\n", "name");
+
+    for (i = 0; name = av_get_known_color_name(i, &rgb); i++)
+        printf("%-32s #%02x%02x%02x\n", name, rgb[0], rgb[1], rgb[2]);
+
+    return 0;
+}
+
+int show_pix_fmts(void *optctx, const char *opt, const char *arg)
+{
+    const AVPixFmtDescriptor *pix_desc = NULL;
+
+    printf("Pixel formats:\n"
+           "I.... = Supported Input  format for conversion\n"
+           ".O... = Supported Output format for conversion\n"
+           "..H.. = Hardware accelerated format\n"
+           "...P. = Paletted format\n"
+           "....B = Bitstream format\n"
+           "FLAGS NAME            NB_COMPONENTS BITS_PER_PIXEL\n"
+           "-----\n");
+
+#if !CONFIG_SWSCALE
+#   define sws_isSupportedInput(x)  0
+#   define sws_isSupportedOutput(x) 0
+#endif
+
+    while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
+        enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(pix_desc);
+        printf("%c%c%c%c%c %-16s       %d            %2d\n",
+               sws_isSupportedInput (pix_fmt)              ? 'I' : '.',
+               sws_isSupportedOutput(pix_fmt)              ? 'O' : '.',
+               pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL   ? 'H' : '.',
+               pix_desc->flags & AV_PIX_FMT_FLAG_PAL       ? 'P' : '.',
+               pix_desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ? 'B' : '.',
+               pix_desc->name,
+               pix_desc->nb_components,
+               av_get_bits_per_pixel(pix_desc));
+    }
+    return 0;
+}
+
+int show_layouts(void *optctx, const char *opt, const char *arg)
+{
+    int i = 0;
+    uint64_t layout, j;
+    const char *name, *descr;
+
+    printf("Individual channels:\n"
+           "NAME           DESCRIPTION\n");
+    for (i = 0; i < 63; i++) {
+        name = av_get_channel_name((uint64_t)1 << i);
+        if (!name)
+            continue;
+        descr = av_get_channel_description((uint64_t)1 << i);
+        printf("%-14s %s\n", name, descr);
+    }
+    printf("\nStandard channel layouts:\n"
+           "NAME           DECOMPOSITION\n");
+    for (i = 0; !av_get_standard_channel_layout(i, &layout, &name); i++) {
+        if (name) {
+            printf("%-14s ", name);
+            for (j = 1; j; j <<= 1)
+                if ((layout & j))
+                    printf("%s%s", (layout & (j - 1)) ? "+" : "", av_get_channel_name(j));
+            printf("\n");
+        }
+    }
+    return 0;
+}
+
+int show_sample_fmts(void *optctx, const char *opt, const char *arg)
+{
+    int i;
+    char fmt_str[128];
+    for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
+        printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
+    return 0;
+}
+
+static void show_help_codec(const char *name, int encoder)
+{
+    const AVCodecDescriptor *desc;
+    const AVCodec *codec;
+
+    if (!name) {
+        av_log(NULL, AV_LOG_ERROR, "No codec name specified.\n");
+        return;
+    }
+
+    codec = encoder ? avcodec_find_encoder_by_name(name) :
+                      avcodec_find_decoder_by_name(name);
+
+    if (codec)
+        print_codec(codec);
+    else if ((desc = avcodec_descriptor_get_by_name(name))) {
+        int printed = 0;
+
+        while ((codec = next_codec_for_id(desc->id, codec, encoder))) {
+            printed = 1;
+            print_codec(codec);
+        }
+
+        if (!printed) {
+            av_log(NULL, AV_LOG_ERROR, "Codec '%s' is known to FFmpeg, "
+                   "but no %s for it are available. FFmpeg might need to be "
+                   "recompiled with additional external libraries.\n",
+                   name, encoder ? "encoders" : "decoders");
+        }
+    } else {
+        av_log(NULL, AV_LOG_ERROR, "Codec '%s' is not recognized by FFmpeg.\n",
+               name);
+    }
+}
+
+static void show_help_demuxer(const char *name)
+{
+    const AVInputFormat *fmt = av_find_input_format(name);
+
+    if (!fmt) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
+        return;
+    }
+
+    printf("Demuxer %s [%s]:\n", fmt->name, fmt->long_name);
+
+    if (fmt->extensions)
+        printf("    Common extensions: %s.\n", fmt->extensions);
+
+    if (fmt->priv_class)
+        show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
+}
+
+static void show_help_muxer(const char *name)
+{
+    const AVCodecDescriptor *desc;
+    const AVOutputFormat *fmt = av_guess_format(name, NULL, NULL);
+
+    if (!fmt) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown format '%s'.\n", name);
+        return;
+    }
+
+    printf("Muxer %s [%s]:\n", fmt->name, fmt->long_name);
+
+    if (fmt->extensions)
+        printf("    Common extensions: %s.\n", fmt->extensions);
+    if (fmt->mime_type)
+        printf("    Mime type: %s.\n", fmt->mime_type);
+    if (fmt->video_codec != AV_CODEC_ID_NONE &&
+        (desc = avcodec_descriptor_get(fmt->video_codec))) {
+        printf("    Default video codec: %s.\n", desc->name);
+    }
+    if (fmt->audio_codec != AV_CODEC_ID_NONE &&
+        (desc = avcodec_descriptor_get(fmt->audio_codec))) {
+        printf("    Default audio codec: %s.\n", desc->name);
+    }
+    if (fmt->subtitle_codec != AV_CODEC_ID_NONE &&
+        (desc = avcodec_descriptor_get(fmt->subtitle_codec))) {
+        printf("    Default subtitle codec: %s.\n", desc->name);
+    }
+
+    if (fmt->priv_class)
+        show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM);
+}
+
+#if CONFIG_AVFILTER
+static void show_help_filter(const char *name)
+{
+#if CONFIG_AVFILTER
+    const AVFilter *f = avfilter_get_by_name(name);
+    int i, count;
+
+    if (!name) {
+        av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
+        return;
+    } else if (!f) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name);
+        return;
+    }
+
+    printf("Filter %s\n", f->name);
+    if (f->description)
+        printf("  %s\n", f->description);
+
+    if (f->flags & AVFILTER_FLAG_SLICE_THREADS)
+        printf("    slice threading supported\n");
+
+    printf("    Inputs:\n");
+    count = avfilter_pad_count(f->inputs);
+    for (i = 0; i < count; i++) {
+        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i),
+               media_type_string(avfilter_pad_get_type(f->inputs, i)));
+    }
+    if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS)
+        printf("        dynamic (depending on the options)\n");
+    else if (!count)
+        printf("        none (source filter)\n");
+
+    printf("    Outputs:\n");
+    count = avfilter_pad_count(f->outputs);
+    for (i = 0; i < count; i++) {
+        printf("       #%d: %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i),
+               media_type_string(avfilter_pad_get_type(f->outputs, i)));
+    }
+    if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS)
+        printf("        dynamic (depending on the options)\n");
+    else if (!count)
+        printf("        none (sink filter)\n");
+
+    if (f->priv_class)
+        show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
+                                          AV_OPT_FLAG_AUDIO_PARAM);
+    if (f->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)
+        printf("This filter has support for timeline through the 'enable' option.\n");
+#else
+    av_log(NULL, AV_LOG_ERROR, "Build without libavfilter; "
+           "can not to satisfy request\n");
+#endif
+}
+#endif
+
+int show_help(void *optctx, const char *opt, const char *arg)
+{
+    char *topic, *par;
+    av_log_set_callback(log_callback_help);
+
+    topic = av_strdup(arg ? arg : "");
+    if (!topic)
+        return AVERROR(ENOMEM);
+    par = strchr(topic, '=');
+    if (par)
+        *par++ = 0;
+
+    if (!*topic) {
+        show_help_default(topic, par);
+    } else if (!strcmp(topic, "decoder")) {
+        show_help_codec(par, 0);
+    } else if (!strcmp(topic, "encoder")) {
+        show_help_codec(par, 1);
+    } else if (!strcmp(topic, "demuxer")) {
+        show_help_demuxer(par);
+    } else if (!strcmp(topic, "muxer")) {
+        show_help_muxer(par);
+#if CONFIG_AVFILTER
+    } else if (!strcmp(topic, "filter")) {
+        show_help_filter(par);
+#endif
+    } else {
+        show_help_default(topic, par);
+    }
+
+    av_freep(&topic);
+    return 0;
+}
+
+int read_yesno(void)
+{
+    int c = getchar();
+    int yesno = (av_toupper(c) == 'Y');
+
+    while (c != '\n' && c != EOF)
+        c = getchar();
+
+    return yesno;
+}
+
+FILE *get_preset_file(char *filename, size_t filename_size,
+                      const char *preset_name, int is_path,
+                      const char *codec_name)
+{
+    FILE *f = NULL;
+    int i;
+    const char *base[3] = { getenv("FFMPEG_DATADIR"),
+                            getenv("HOME"),
+                            FFMPEG_DATADIR, };
+
+    if (is_path) {
+        av_strlcpy(filename, preset_name, filename_size);
+        f = fopen(filename, "r");
+    } else {
+#ifdef _WIN32
+        char datadir[MAX_PATH], *ls;
+        base[2] = NULL;
+
+        if (GetModuleFileNameA(GetModuleHandleA(NULL), datadir, sizeof(datadir) - 1))
+        {
+            for (ls = datadir; ls < datadir + strlen(datadir); ls++)
+                if (*ls == '\\') *ls = '/';
+
+            if (ls = strrchr(datadir, '/'))
+            {
+                *ls = 0;
+                strncat(datadir, "/ffpresets",  sizeof(datadir) - 1 - strlen(datadir));
+                base[2] = datadir;
+            }
+        }
+#endif
+        for (i = 0; i < 3 && !f; i++) {
+            if (!base[i])
+                continue;
+            snprintf(filename, filename_size, "%s%s/%s.ffpreset", base[i],
+                     i != 1 ? "" : "/.ffmpeg", preset_name);
+            f = fopen(filename, "r");
+            if (!f && codec_name) {
+                snprintf(filename, filename_size,
+                         "%s%s/%s-%s.ffpreset",
+                         base[i], i != 1 ? "" : "/.ffmpeg", codec_name,
+                         preset_name);
+                f = fopen(filename, "r");
+            }
+        }
+    }
+
+    return f;
+}
+
+int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
+{
+    int ret = avformat_match_stream_specifier(s, st, spec);
+    if (ret < 0)
+        av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
+    return ret;
+}
+
+AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
+                                AVFormatContext *s, AVStream *st, AVCodec *codec)
+{
+    AVDictionary    *ret = NULL;
+    AVDictionaryEntry *t = NULL;
+    int            flags = s->oformat ? AV_OPT_FLAG_ENCODING_PARAM
+                                      : AV_OPT_FLAG_DECODING_PARAM;
+    char          prefix = 0;
+    const AVClass    *cc = avcodec_get_class();
+
+    if (!codec)
+        codec            = s->oformat ? avcodec_find_encoder(codec_id)
+                                      : avcodec_find_decoder(codec_id);
+
+    switch (st->codecpar->codec_type) {
+    case AVMEDIA_TYPE_VIDEO:
+        prefix  = 'v';
+        flags  |= AV_OPT_FLAG_VIDEO_PARAM;
+        break;
+    case AVMEDIA_TYPE_AUDIO:
+        prefix  = 'a';
+        flags  |= AV_OPT_FLAG_AUDIO_PARAM;
+        break;
+    case AVMEDIA_TYPE_SUBTITLE:
+        prefix  = 's';
+        flags  |= AV_OPT_FLAG_SUBTITLE_PARAM;
+        break;
+    }
+
+    while (t = av_dict_get(opts, "", t, AV_DICT_IGNORE_SUFFIX)) {
+        char *p = strchr(t->key, ':');
+
+        /* check stream specification in opt name */
+        if (p)
+            switch (check_stream_specifier(s, st, p + 1)) {
+            case  1: *p = 0; break;
+            case  0:         continue;
+            default:         exit_program(1);
+            }
+
+        if (av_opt_find(&cc, t->key, NULL, flags, AV_OPT_SEARCH_FAKE_OBJ) ||
+            !codec ||
+            (codec->priv_class &&
+             av_opt_find(&codec->priv_class, t->key, NULL, flags,
+                         AV_OPT_SEARCH_FAKE_OBJ)))
+            av_dict_set(&ret, t->key, t->value, 0);
+        else if (t->key[0] == prefix &&
+                 av_opt_find(&cc, t->key + 1, NULL, flags,
+                             AV_OPT_SEARCH_FAKE_OBJ))
+            av_dict_set(&ret, t->key + 1, t->value, 0);
+
+        if (p)
+            *p = ':';
+    }
+    return ret;
+}
+
+AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
+                                           AVDictionary *codec_opts)
+{
+    int i;
+    AVDictionary **opts;
+
+    if (!s->nb_streams)
+        return NULL;
+    opts = av_mallocz_array(s->nb_streams, sizeof(*opts));
+    if (!opts) {
+        av_log(NULL, AV_LOG_ERROR,
+               "Could not alloc memory for stream options.\n");
+        return NULL;
+    }
+    for (i = 0; i < s->nb_streams; i++)
+        opts[i] = filter_codec_opts(codec_opts, s->streams[i]->codecpar->codec_id,
+                                    s, s->streams[i], NULL);
+    return opts;
+}
+
+void *grow_array(void *array, int elem_size, int *size, int new_size)
+{
+    if (new_size >= INT_MAX / elem_size) {
+        av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
+        exit_program(1);
+    }
+    if (*size < new_size) {
+        uint8_t *tmp = av_realloc_array(array, new_size, elem_size);
+        if (!tmp) {
+            av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
+            exit_program(1);
+        }
+        memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
+        *size = new_size;
+        return tmp;
+    }
+    return array;
+}
+
+double get_rotation(AVStream *st)
+{
+    uint8_t* displaymatrix = av_stream_get_side_data(st,
+                                                     AV_PKT_DATA_DISPLAYMATRIX, NULL);
+    double theta = 0;
+    if (displaymatrix)
+        theta = -av_display_rotation_get((int32_t*) displaymatrix);
+
+    theta -= 360*floor(theta/360 + 0.9/360);
+
+    if (fabs(theta - 90*round(theta/90)) > 2)
+        av_log(NULL, AV_LOG_WARNING, "Odd rotation angle.\n"
+               "If you want to help, upload a sample "
+               "of this file to ftp://upload.ffmpeg.org/incoming/ "
+               "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)");
+
+    return theta;
+}
+
+#if CONFIG_AVDEVICE
+static int print_device_sources(AVInputFormat *fmt, AVDictionary *opts)
+{
+    int ret, i;
+    AVDeviceInfoList *device_list = NULL;
+
+    if (!fmt || !fmt->priv_class  || !AV_IS_INPUT_DEVICE(fmt->priv_class->category))
+        return AVERROR(EINVAL);
+
+    printf("Auto-detected sources for %s:\n", fmt->name);
+    if (!fmt->get_device_list) {
+        ret = AVERROR(ENOSYS);
+        printf("Cannot list sources. Not implemented.\n");
+        goto fail;
+    }
+
+    if ((ret = avdevice_list_input_sources(fmt, NULL, opts, &device_list)) < 0) {
+        printf("Cannot list sources.\n");
+        goto fail;
+    }
+
+    for (i = 0; i < device_list->nb_devices; i++) {
+        printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
+               device_list->devices[i]->device_name, device_list->devices[i]->device_description);
+    }
+
+  fail:
+    avdevice_free_list_devices(&device_list);
+    return ret;
+}
+
+static int print_device_sinks(AVOutputFormat *fmt, AVDictionary *opts)
+{
+    int ret, i;
+    AVDeviceInfoList *device_list = NULL;
+
+    if (!fmt || !fmt->priv_class  || !AV_IS_OUTPUT_DEVICE(fmt->priv_class->category))
+        return AVERROR(EINVAL);
+
+    printf("Auto-detected sinks for %s:\n", fmt->name);
+    if (!fmt->get_device_list) {
+        ret = AVERROR(ENOSYS);
+        printf("Cannot list sinks. Not implemented.\n");
+        goto fail;
+    }
+
+    if ((ret = avdevice_list_output_sinks(fmt, NULL, opts, &device_list)) < 0) {
+        printf("Cannot list sinks.\n");
+        goto fail;
+    }
+
+    for (i = 0; i < device_list->nb_devices; i++) {
+        printf("%s %s [%s]\n", device_list->default_device == i ? "*" : " ",
+               device_list->devices[i]->device_name, device_list->devices[i]->device_description);
+    }
+
+  fail:
+    avdevice_free_list_devices(&device_list);
+    return ret;
+}
+
+static int show_sinks_sources_parse_arg(const char *arg, char **dev, AVDictionary **opts)
+{
+    int ret;
+    if (arg) {
+        char *opts_str = NULL;
+        av_assert0(dev && opts);
+        *dev = av_strdup(arg);
+        if (!*dev)
+            return AVERROR(ENOMEM);
+        if ((opts_str = strchr(*dev, ','))) {
+            *(opts_str++) = '\0';
+            if (opts_str[0] && ((ret = av_dict_parse_string(opts, opts_str, "=", ":", 0)) < 0)) {
+                av_freep(dev);
+                return ret;
+            }
+        }
+    } else
+        printf("\nDevice name is not provided.\n"
+                "You can pass devicename[,opt1=val1[,opt2=val2...]] as an argument.\n\n");
+    return 0;
+}
+
+int show_sources(void *optctx, const char *opt, const char *arg)
+{
+    AVInputFormat *fmt = NULL;
+    char *dev = NULL;
+    AVDictionary *opts = NULL;
+    int ret = 0;
+    int error_level = av_log_get_level();
+
+    av_log_set_level(AV_LOG_ERROR);
+
+    if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
+        goto fail;
+
+    do {
+        fmt = av_input_audio_device_next(fmt);
+        if (fmt) {
+            if (!strcmp(fmt->name, "lavfi"))
+                continue; //it's pointless to probe lavfi
+            if (dev && !av_match_name(dev, fmt->name))
+                continue;
+            print_device_sources(fmt, opts);
+        }
+    } while (fmt);
+    do {
+        fmt = av_input_video_device_next(fmt);
+        if (fmt) {
+            if (dev && !av_match_name(dev, fmt->name))
+                continue;
+            print_device_sources(fmt, opts);
+        }
+    } while (fmt);
+  fail:
+    av_dict_free(&opts);
+    av_free(dev);
+    av_log_set_level(error_level);
+    return ret;
+}
+
+int show_sinks(void *optctx, const char *opt, const char *arg)
+{
+    AVOutputFormat *fmt = NULL;
+    char *dev = NULL;
+    AVDictionary *opts = NULL;
+    int ret = 0;
+    int error_level = av_log_get_level();
+
+    av_log_set_level(AV_LOG_ERROR);
+
+    if ((ret = show_sinks_sources_parse_arg(arg, &dev, &opts)) < 0)
+        goto fail;
+
+    do {
+        fmt = av_output_audio_device_next(fmt);
+        if (fmt) {
+            if (dev && !av_match_name(dev, fmt->name))
+                continue;
+            print_device_sinks(fmt, opts);
+        }
+    } while (fmt);
+    do {
+        fmt = av_output_video_device_next(fmt);
+        if (fmt) {
+            if (dev && !av_match_name(dev, fmt->name))
+                continue;
+            print_device_sinks(fmt, opts);
+        }
+    } while (fmt);
+  fail:
+    av_dict_free(&opts);
+    av_free(dev);
+    av_log_set_level(error_level);
+    return ret;
+}
+
+#endif
diff --git a/fftools/cmdutils.h b/fftools/cmdutils.h
new file mode 100644
index 0000000000..2997ee37b5
--- /dev/null
+++ b/fftools/cmdutils.h
@@ -0,0 +1,662 @@
+/*
+ * Various utilities for command line tools
+ * copyright (c) 2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFTOOLS_CMDUTILS_H
+#define FFTOOLS_CMDUTILS_H
+
+#include <stdint.h>
+
+#include "config.h"
+#include "libavcodec/avcodec.h"
+#include "libavfilter/avfilter.h"
+#include "libavformat/avformat.h"
+#include "libswscale/swscale.h"
+
+#ifdef _WIN32
+#undef main /* We don't want SDL to override our main() */
+#endif
+
+/**
+ * program name, defined by the program for show_version().
+ */
+extern const char program_name[];
+
+/**
+ * program birth year, defined by the program for show_banner()
+ */
+extern const int program_birth_year;
+
+extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
+extern AVFormatContext *avformat_opts;
+extern AVDictionary *sws_dict;
+extern AVDictionary *swr_opts;
+extern AVDictionary *format_opts, *codec_opts, *resample_opts;
+extern int hide_banner;
+
+/**
+ * Register a program-specific cleanup routine.
+ */
+void register_exit(void (*cb)(int ret));
+
+/**
+ * Wraps exit with a program-specific cleanup routine.
+ */
+void exit_program(int ret) av_noreturn;
+
+/**
+ * Initialize dynamic library loading
+ */
+void init_dynload(void);
+
+/**
+ * Initialize the cmdutils option system, in particular
+ * allocate the *_opts contexts.
+ */
+void init_opts(void);
+/**
+ * Uninitialize the cmdutils option system, in particular
+ * free the *_opts contexts and their contents.
+ */
+void uninit_opts(void);
+
+/**
+ * Trivial log callback.
+ * Only suitable for opt_help and similar since it lacks prefix handling.
+ */
+void log_callback_help(void* ptr, int level, const char* fmt, va_list vl);
+
+/**
+ * Override the cpuflags.
+ */
+int opt_cpuflags(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Fallback for options that are not explicitly handled, these will be
+ * parsed through AVOptions.
+ */
+int opt_default(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Set the libav* libraries log level.
+ */
+int opt_loglevel(void *optctx, const char *opt, const char *arg);
+
+int opt_report(const char *opt);
+
+int opt_max_alloc(void *optctx, const char *opt, const char *arg);
+
+int opt_codec_debug(void *optctx, const char *opt, const char *arg);
+
+#if CONFIG_OPENCL
+int opt_opencl(void *optctx, const char *opt, const char *arg);
+
+int opt_opencl_bench(void *optctx, const char *opt, const char *arg);
+#endif
+
+/**
+ * Limit the execution time.
+ */
+int opt_timelimit(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Parse a string and return its corresponding value as a double.
+ * Exit from the application if the string cannot be correctly
+ * parsed or the corresponding value is invalid.
+ *
+ * @param context the context of the value to be set (e.g. the
+ * corresponding command line option name)
+ * @param numstr the string to be parsed
+ * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
+ * string should be parsed
+ * @param min the minimum valid accepted value
+ * @param max the maximum valid accepted value
+ */
+double parse_number_or_die(const char *context, const char *numstr, int type,
+                           double min, double max);
+
+/**
+ * Parse a string specifying a time and return its corresponding
+ * value as a number of microseconds. Exit from the application if
+ * the string cannot be correctly parsed.
+ *
+ * @param context the context of the value to be set (e.g. the
+ * corresponding command line option name)
+ * @param timestr the string to be parsed
+ * @param is_duration a flag which tells how to interpret timestr, if
+ * not zero timestr is interpreted as a duration, otherwise as a
+ * date
+ *
+ * @see av_parse_time()
+ */
+int64_t parse_time_or_die(const char *context, const char *timestr,
+                          int is_duration);
+
+typedef struct SpecifierOpt {
+    char *specifier;    /**< stream/chapter/program/... specifier */
+    union {
+        uint8_t *str;
+        int        i;
+        int64_t  i64;
+        float      f;
+        double   dbl;
+    } u;
+} SpecifierOpt;
+
+typedef struct OptionDef {
+    const char *name;
+    int flags;
+#define HAS_ARG    0x0001
+#define OPT_BOOL   0x0002
+#define OPT_EXPERT 0x0004
+#define OPT_STRING 0x0008
+#define OPT_VIDEO  0x0010
+#define OPT_AUDIO  0x0020
+#define OPT_INT    0x0080
+#define OPT_FLOAT  0x0100
+#define OPT_SUBTITLE 0x0200
+#define OPT_INT64  0x0400
+#define OPT_EXIT   0x0800
+#define OPT_DATA   0x1000
+#define OPT_PERFILE  0x2000     /* the option is per-file (currently ffmpeg-only).
+                                   implied by OPT_OFFSET or OPT_SPEC */
+#define OPT_OFFSET 0x4000       /* option is specified as an offset in a passed optctx */
+#define OPT_SPEC   0x8000       /* option is to be stored in an array of SpecifierOpt.
+                                   Implies OPT_OFFSET. Next element after the offset is
+                                   an int containing element count in the array. */
+#define OPT_TIME  0x10000
+#define OPT_DOUBLE 0x20000
+#define OPT_INPUT  0x40000
+#define OPT_OUTPUT 0x80000
+     union {
+        void *dst_ptr;
+        int (*func_arg)(void *, const char *, const char *);
+        size_t off;
+    } u;
+    const char *help;
+    const char *argname;
+} OptionDef;
+
+/**
+ * Print help for all options matching specified flags.
+ *
+ * @param options a list of options
+ * @param msg title of this group. Only printed if at least one option matches.
+ * @param req_flags print only options which have all those flags set.
+ * @param rej_flags don't print options which have any of those flags set.
+ * @param alt_flags print only options that have at least one of those flags set
+ */
+void show_help_options(const OptionDef *options, const char *msg, int req_flags,
+                       int rej_flags, int alt_flags);
+
+#if CONFIG_OPENCL
+#define CMDUTILS_COMMON_OPTIONS_OPENCL                                                                                  \
+    { "opencl_bench", OPT_EXIT, {.func_arg = opt_opencl_bench},                                                         \
+       "run benchmark on all OpenCL devices and show results" },                                                        \
+    { "opencl_options", HAS_ARG, {.func_arg = opt_opencl},                                                              \
+       "set OpenCL environment options" },                                                                              \
+
+#else
+#define CMDUTILS_COMMON_OPTIONS_OPENCL
+#endif
+
+#if CONFIG_AVDEVICE
+#define CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                \
+    { "sources"    , OPT_EXIT | HAS_ARG, { .func_arg = show_sources },                                                  \
+      "list sources of the input device", "device" },                                                                   \
+    { "sinks"      , OPT_EXIT | HAS_ARG, { .func_arg = show_sinks },                                                    \
+      "list sinks of the output device", "device" },                                                                    \
+
+#else
+#define CMDUTILS_COMMON_OPTIONS_AVDEVICE
+#endif
+
+#define CMDUTILS_COMMON_OPTIONS                                                                                         \
+    { "L",           OPT_EXIT,             { .func_arg = show_license },     "show license" },                          \
+    { "h",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "?",           OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "help",        OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "-help",       OPT_EXIT,             { .func_arg = show_help },        "show help", "topic" },                    \
+    { "version",     OPT_EXIT,             { .func_arg = show_version },     "show version" },                          \
+    { "buildconf",   OPT_EXIT,             { .func_arg = show_buildconf },   "show build configuration" },              \
+    { "formats",     OPT_EXIT,             { .func_arg = show_formats },     "show available formats" },                \
+    { "muxers",      OPT_EXIT,             { .func_arg = show_muxers },      "show available muxers" },                 \
+    { "demuxers",    OPT_EXIT,             { .func_arg = show_demuxers },    "show available demuxers" },               \
+    { "devices",     OPT_EXIT,             { .func_arg = show_devices },     "show available devices" },                \
+    { "codecs",      OPT_EXIT,             { .func_arg = show_codecs },      "show available codecs" },                 \
+    { "decoders",    OPT_EXIT,             { .func_arg = show_decoders },    "show available decoders" },               \
+    { "encoders",    OPT_EXIT,             { .func_arg = show_encoders },    "show available encoders" },               \
+    { "bsfs",        OPT_EXIT,             { .func_arg = show_bsfs },        "show available bit stream filters" },     \
+    { "protocols",   OPT_EXIT,             { .func_arg = show_protocols },   "show available protocols" },              \
+    { "filters",     OPT_EXIT,             { .func_arg = show_filters },     "show available filters" },                \
+    { "pix_fmts",    OPT_EXIT,             { .func_arg = show_pix_fmts },    "show available pixel formats" },          \
+    { "layouts",     OPT_EXIT,             { .func_arg = show_layouts },     "show standard channel layouts" },         \
+    { "sample_fmts", OPT_EXIT,             { .func_arg = show_sample_fmts }, "show available audio sample formats" },   \
+    { "colors",      OPT_EXIT,             { .func_arg = show_colors },      "show available color names" },            \
+    { "loglevel",    HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
+    { "v",           HAS_ARG,              { .func_arg = opt_loglevel },     "set logging level", "loglevel" },         \
+    { "report",      0,                    { (void*)opt_report },            "generate a report" },                     \
+    { "max_alloc",   HAS_ARG,              { .func_arg = opt_max_alloc },    "set maximum size of a single allocated block", "bytes" }, \
+    { "cpuflags",    HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags },     "force specific cpu flags", "flags" },     \
+    { "hide_banner", OPT_BOOL | OPT_EXPERT, {&hide_banner},     "do not show program banner", "hide_banner" },          \
+    CMDUTILS_COMMON_OPTIONS_OPENCL                                                                                      \
+    CMDUTILS_COMMON_OPTIONS_AVDEVICE                                                                                    \
+
+/**
+ * Show help for all options with given flags in class and all its
+ * children.
+ */
+void show_help_children(const AVClass *class, int flags);
+
+/**
+ * Per-fftool specific help handler. Implemented in each
+ * fftool, called by show_help().
+ */
+void show_help_default(const char *opt, const char *arg);
+
+/**
+ * Generic -h handler common to all fftools.
+ */
+int show_help(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Parse the command line arguments.
+ *
+ * @param optctx an opaque options context
+ * @param argc   number of command line arguments
+ * @param argv   values of command line arguments
+ * @param options Array with the definitions required to interpret every
+ * option of the form: -option_name [argument]
+ * @param parse_arg_function Name of the function called to process every
+ * argument without a leading option name flag. NULL if such arguments do
+ * not have to be processed.
+ */
+void parse_options(void *optctx, int argc, char **argv, const OptionDef *options,
+                   void (* parse_arg_function)(void *optctx, const char*));
+
+/**
+ * Parse one given option.
+ *
+ * @return on success 1 if arg was consumed, 0 otherwise; negative number on error
+ */
+int parse_option(void *optctx, const char *opt, const char *arg,
+                 const OptionDef *options);
+
+/**
+ * An option extracted from the commandline.
+ * Cannot use AVDictionary because of options like -map which can be
+ * used multiple times.
+ */
+typedef struct Option {
+    const OptionDef  *opt;
+    const char       *key;
+    const char       *val;
+} Option;
+
+typedef struct OptionGroupDef {
+    /**< group name */
+    const char *name;
+    /**
+     * Option to be used as group separator. Can be NULL for groups which
+     * are terminated by a non-option argument (e.g. ffmpeg output files)
+     */
+    const char *sep;
+    /**
+     * Option flags that must be set on each option that is
+     * applied to this group
+     */
+    int flags;
+} OptionGroupDef;
+
+typedef struct OptionGroup {
+    const OptionGroupDef *group_def;
+    const char *arg;
+
+    Option *opts;
+    int  nb_opts;
+
+    AVDictionary *codec_opts;
+    AVDictionary *format_opts;
+    AVDictionary *resample_opts;
+    AVDictionary *sws_dict;
+    AVDictionary *swr_opts;
+} OptionGroup;
+
+/**
+ * A list of option groups that all have the same group type
+ * (e.g. input files or output files)
+ */
+typedef struct OptionGroupList {
+    const OptionGroupDef *group_def;
+
+    OptionGroup *groups;
+    int       nb_groups;
+} OptionGroupList;
+
+typedef struct OptionParseContext {
+    OptionGroup global_opts;
+
+    OptionGroupList *groups;
+    int           nb_groups;
+
+    /* parsing state */
+    OptionGroup cur_group;
+} OptionParseContext;
+
+/**
+ * Parse an options group and write results into optctx.
+ *
+ * @param optctx an app-specific options context. NULL for global options group
+ */
+int parse_optgroup(void *optctx, OptionGroup *g);
+
+/**
+ * Split the commandline into an intermediate form convenient for further
+ * processing.
+ *
+ * The commandline is assumed to be composed of options which either belong to a
+ * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global
+ * (everything else).
+ *
+ * A group (defined by an OptionGroupDef struct) is a sequence of options
+ * terminated by either a group separator option (e.g. -i) or a parameter that
+ * is not an option (doesn't start with -). A group without a separator option
+ * must always be first in the supplied groups list.
+ *
+ * All options within the same group are stored in one OptionGroup struct in an
+ * OptionGroupList, all groups with the same group definition are stored in one
+ * OptionGroupList in OptionParseContext.groups. The order of group lists is the
+ * same as the order of group definitions.
+ */
+int split_commandline(OptionParseContext *octx, int argc, char *argv[],
+                      const OptionDef *options,
+                      const OptionGroupDef *groups, int nb_groups);
+
+/**
+ * Free all allocated memory in an OptionParseContext.
+ */
+void uninit_parse_context(OptionParseContext *octx);
+
+/**
+ * Find the '-loglevel' option in the command line args and apply it.
+ */
+void parse_loglevel(int argc, char **argv, const OptionDef *options);
+
+/**
+ * Return index of option opt in argv or 0 if not found.
+ */
+int locate_option(int argc, char **argv, const OptionDef *options,
+                  const char *optname);
+
+/**
+ * Check if the given stream matches a stream specifier.
+ *
+ * @param s  Corresponding format context.
+ * @param st Stream from s to be checked.
+ * @param spec A stream specifier of the [v|a|s|d]:[\<stream index\>] form.
+ *
+ * @return 1 if the stream matches, 0 if it doesn't, <0 on error
+ */
+int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
+
+/**
+ * Filter out options for given codec.
+ *
+ * Create a new options dictionary containing only the options from
+ * opts which apply to the codec with ID codec_id.
+ *
+ * @param opts     dictionary to place options in
+ * @param codec_id ID of the codec that should be filtered for
+ * @param s Corresponding format context.
+ * @param st A stream from s for which the options should be filtered.
+ * @param codec The particular codec for which the options should be filtered.
+ *              If null, the default one is looked up according to the codec id.
+ * @return a pointer to the created dictionary
+ */
+AVDictionary *filter_codec_opts(AVDictionary *opts, enum AVCodecID codec_id,
+                                AVFormatContext *s, AVStream *st, AVCodec *codec);
+
+/**
+ * Setup AVCodecContext options for avformat_find_stream_info().
+ *
+ * Create an array of dictionaries, one dictionary for each stream
+ * contained in s.
+ * Each dictionary will contain the options from codec_opts which can
+ * be applied to the corresponding stream codec context.
+ *
+ * @return pointer to the created array of dictionaries, NULL if it
+ * cannot be created
+ */
+AVDictionary **setup_find_stream_info_opts(AVFormatContext *s,
+                                           AVDictionary *codec_opts);
+
+/**
+ * Print an error message to stderr, indicating filename and a human
+ * readable description of the error code err.
+ *
+ * If strerror_r() is not available the use of this function in a
+ * multithreaded application may be unsafe.
+ *
+ * @see av_strerror()
+ */
+void print_error(const char *filename, int err);
+
+/**
+ * Print the program banner to stderr. The banner contents depend on the
+ * current version of the repository and of the libav* libraries used by
+ * the program.
+ */
+void show_banner(int argc, char **argv, const OptionDef *options);
+
+/**
+ * Print the version of the program to stdout. The version message
+ * depends on the current versions of the repository and of the libav*
+ * libraries.
+ * This option processing function does not utilize the arguments.
+ */
+int show_version(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print the build configuration of the program to stdout. The contents
+ * depend on the definition of FFMPEG_CONFIGURATION.
+ * This option processing function does not utilize the arguments.
+ */
+int show_buildconf(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print the license of the program to stdout. The license depends on
+ * the license of the libraries compiled into the program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_license(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the formats supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_formats(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the muxers supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_muxers(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the demuxer supported by the
+ * program (including devices).
+ * This option processing function does not utilize the arguments.
+ */
+int show_demuxers(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the devices supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_devices(void *optctx, const char *opt, const char *arg);
+
+#if CONFIG_AVDEVICE
+/**
+ * Print a listing containing autodetected sinks of the output device.
+ * Device name with options may be passed as an argument to limit results.
+ */
+int show_sinks(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing autodetected sources of the input device.
+ * Device name with options may be passed as an argument to limit results.
+ */
+int show_sources(void *optctx, const char *opt, const char *arg);
+#endif
+
+/**
+ * Print a listing containing all the codecs supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_codecs(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the decoders supported by the
+ * program.
+ */
+int show_decoders(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the encoders supported by the
+ * program.
+ */
+int show_encoders(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the filters supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_filters(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the bit stream filters supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_bsfs(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the protocols supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_protocols(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the pixel formats supported by the
+ * program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_pix_fmts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the standard channel layouts supported by
+ * the program.
+ * This option processing function does not utilize the arguments.
+ */
+int show_layouts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the sample formats supported by the
+ * program.
+ */
+int show_sample_fmts(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Print a listing containing all the color names and values recognized
+ * by the program.
+ */
+int show_colors(void *optctx, const char *opt, const char *arg);
+
+/**
+ * Return a positive value if a line read from standard input
+ * starts with [yY], otherwise return 0.
+ */
+int read_yesno(void);
+
+/**
+ * Get a file corresponding to a preset file.
+ *
+ * If is_path is non-zero, look for the file in the path preset_name.
+ * Otherwise search for a file named arg.ffpreset in the directories
+ * $FFMPEG_DATADIR (if set), $HOME/.ffmpeg, and in the datadir defined
+ * at configuration time or in a "ffpresets" folder along the executable
+ * on win32, in that order. If no such file is found and
+ * codec_name is defined, then search for a file named
+ * codec_name-preset_name.avpreset in the above-mentioned directories.
+ *
+ * @param filename buffer where the name of the found filename is written
+ * @param filename_size size in bytes of the filename buffer
+ * @param preset_name name of the preset to search
+ * @param is_path tell if preset_name is a filename path
+ * @param codec_name name of the codec for which to look for the
+ * preset, may be NULL
+ */
+FILE *get_preset_file(char *filename, size_t filename_size,
+                      const char *preset_name, int is_path, const char *codec_name);
+
+/**
+ * Realloc array to hold new_size elements of elem_size.
+ * Calls exit() on failure.
+ *
+ * @param array array to reallocate
+ * @param elem_size size in bytes of each element
+ * @param size new element count will be written here
+ * @param new_size number of elements to place in reallocated array
+ * @return reallocated array
+ */
+void *grow_array(void *array, int elem_size, int *size, int new_size);
+
+#define media_type_string av_get_media_type_string
+
+#define GROW_ARRAY(array, nb_elems)\
+    array = grow_array(array, sizeof(*array), &nb_elems, nb_elems + 1)
+
+#define GET_PIX_FMT_NAME(pix_fmt)\
+    const char *name = av_get_pix_fmt_name(pix_fmt);
+
+#define GET_SAMPLE_FMT_NAME(sample_fmt)\
+    const char *name = av_get_sample_fmt_name(sample_fmt)
+
+#define GET_SAMPLE_RATE_NAME(rate)\
+    char name[16];\
+    snprintf(name, sizeof(name), "%d", rate);
+
+#define GET_CH_LAYOUT_NAME(ch_layout)\
+    char name[16];\
+    snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
+
+#define GET_CH_LAYOUT_DESC(ch_layout)\
+    char name[128];\
+    av_get_channel_layout_string(name, sizeof(name), 0, ch_layout);
+
+double get_rotation(AVStream *st);
+
+#endif /* FFTOOLS_CMDUTILS_H */
diff --git a/fftools/cmdutils_opencl.c b/fftools/cmdutils_opencl.c
new file mode 100644
index 0000000000..906aef4836
--- /dev/null
+++ b/fftools/cmdutils_opencl.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2013 Lenny Wang
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/opt.h"
+#include "libavutil/time.h"
+#include "libavutil/log.h"
+#include "libavutil/opencl.h"
+#include "libavutil/avstring.h"
+#include "cmdutils.h"
+
+typedef struct {
+    int platform_idx;
+    int device_idx;
+    char device_name[64];
+    int64_t runtime;
+} OpenCLDeviceBenchmark;
+
+const char *ocl_bench_source = AV_OPENCL_KERNEL(
+inline unsigned char clip_uint8(int a)
+{
+    if (a & (~0xFF))
+        return (-a)>>31;
+    else
+        return a;
+}
+
+kernel void unsharp_bench(
+                    global unsigned char *src,
+                    global unsigned char *dst,
+                    global int *mask,
+                    int width,
+                    int height)
+{
+    int i, j, local_idx, lc_idx, sum = 0;
+    int2 thread_idx, block_idx, global_idx, lm_idx;
+    thread_idx.x = get_local_id(0);
+    thread_idx.y = get_local_id(1);
+    block_idx.x = get_group_id(0);
+    block_idx.y = get_group_id(1);
+    global_idx.x = get_global_id(0);
+    global_idx.y = get_global_id(1);
+    local uchar data[32][32];
+    local int lc[128];
+
+    for (i = 0; i <= 1; i++) {
+        lm_idx.y = -8 + (block_idx.y + i) * 16 + thread_idx.y;
+        lm_idx.y = lm_idx.y < 0 ? 0 : lm_idx.y;
+        lm_idx.y = lm_idx.y >= height ? height - 1: lm_idx.y;
+        for (j = 0; j <= 1; j++) {
+            lm_idx.x = -8 + (block_idx.x + j) * 16 + thread_idx.x;
+            lm_idx.x = lm_idx.x < 0 ? 0 : lm_idx.x;
+            lm_idx.x = lm_idx.x >= width ? width - 1: lm_idx.x;
+            data[i*16 + thread_idx.y][j*16 + thread_idx.x] = src[lm_idx.y*width + lm_idx.x];
+        }
+    }
+    local_idx = thread_idx.y*16 + thread_idx.x;
+    if (local_idx < 128)
+        lc[local_idx] = mask[local_idx];
+    barrier(CLK_LOCAL_MEM_FENCE);
+
+    \n#pragma unroll\n
+    for (i = -4; i <= 4; i++) {
+        lm_idx.y = 8 + i + thread_idx.y;
+        \n#pragma unroll\n
+        for (j = -4; j <= 4; j++) {
+            lm_idx.x = 8 + j + thread_idx.x;
+            lc_idx = (i + 4)*8 + j + 4;
+            sum += (int)data[lm_idx.y][lm_idx.x] * lc[lc_idx];
+        }
+    }
+    int temp = (int)data[thread_idx.y + 8][thread_idx.x + 8];
+    int res = temp + (((temp - (int)((sum + 1<<15) >> 16))) >> 16);
+    if (global_idx.x < width && global_idx.y < height)
+        dst[global_idx.x + global_idx.y*width] = clip_uint8(res);
+}
+);
+
+#define OCLCHECK(method, ... )                                                 \
+do {                                                                           \
+    status = method(__VA_ARGS__);                                              \
+    if (status != CL_SUCCESS) {                                                \
+        av_log(NULL, AV_LOG_ERROR, # method " error '%s'\n",                   \
+               av_opencl_errstr(status));                                      \
+        ret = AVERROR_EXTERNAL;                                                \
+        goto end;                                                              \
+    }                                                                          \
+} while (0)
+
+#define CREATEBUF(out, flags, size)                                            \
+do {                                                                           \
+    out = clCreateBuffer(ext_opencl_env->context, flags, size, NULL, &status); \
+    if (status != CL_SUCCESS) {                                                \
+        av_log(NULL, AV_LOG_ERROR, "Could not create OpenCL buffer\n");        \
+        ret = AVERROR_EXTERNAL;                                                \
+        goto end;                                                              \
+    }                                                                          \
+} while (0)
+
+static void fill_rand_int(int *data, int n)
+{
+    int i;
+    srand(av_gettime());
+    for (i = 0; i < n; i++)
+        data[i] = rand();
+}
+
+#define OPENCL_NB_ITER 5
+static int64_t run_opencl_bench(AVOpenCLExternalEnv *ext_opencl_env)
+{
+    int i, arg = 0, width = 1920, height = 1088;
+    int64_t start, ret = 0;
+    cl_int status;
+    size_t kernel_len;
+    char *inbuf;
+    int *mask = NULL;
+    int buf_size = width * height * sizeof(char);
+    int mask_size = sizeof(uint32_t) * 128;
+
+    cl_mem cl_mask = NULL, cl_inbuf = NULL, cl_outbuf = NULL;
+    cl_kernel kernel = NULL;
+    cl_program program = NULL;
+    size_t local_work_size_2d[2] = {16, 16};
+    size_t global_work_size_2d[2] = {(size_t)width, (size_t)height};
+
+    if (!(inbuf = av_malloc(buf_size)) || !(mask = av_malloc(mask_size))) {
+        av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    fill_rand_int((int*)inbuf, buf_size/4);
+    fill_rand_int(mask, mask_size/4);
+
+    CREATEBUF(cl_mask, CL_MEM_READ_ONLY, mask_size);
+    CREATEBUF(cl_inbuf, CL_MEM_READ_ONLY, buf_size);
+    CREATEBUF(cl_outbuf, CL_MEM_READ_WRITE, buf_size);
+
+    kernel_len = strlen(ocl_bench_source);
+    program = clCreateProgramWithSource(ext_opencl_env->context, 1, &ocl_bench_source,
+                                        &kernel_len, &status);
+    if (status != CL_SUCCESS || !program) {
+        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark program\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+    status = clBuildProgram(program, 1, &(ext_opencl_env->device_id), NULL, NULL, NULL);
+    if (status != CL_SUCCESS) {
+        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to build benchmark program\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+    kernel = clCreateKernel(program, "unsharp_bench", &status);
+    if (status != CL_SUCCESS) {
+        av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark kernel\n");
+        ret = AVERROR_EXTERNAL;
+        goto end;
+    }
+
+    OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_inbuf, CL_TRUE, 0,
+             buf_size, inbuf, 0, NULL, NULL);
+    OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_mask, CL_TRUE, 0,
+             mask_size, mask, 0, NULL, NULL);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_inbuf);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_outbuf);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_mask);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &width);
+    OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &height);
+
+    start = av_gettime_relative();
+    for (i = 0; i < OPENCL_NB_ITER; i++)
+        OCLCHECK(clEnqueueNDRangeKernel, ext_opencl_env->command_queue, kernel, 2, NULL,
+                 global_work_size_2d, local_work_size_2d, 0, NULL, NULL);
+    clFinish(ext_opencl_env->command_queue);
+    ret = (av_gettime_relative() - start)/OPENCL_NB_ITER;
+end:
+    if (kernel)
+        clReleaseKernel(kernel);
+    if (program)
+        clReleaseProgram(program);
+    if (cl_inbuf)
+        clReleaseMemObject(cl_inbuf);
+    if (cl_outbuf)
+        clReleaseMemObject(cl_outbuf);
+    if (cl_mask)
+        clReleaseMemObject(cl_mask);
+    av_free(inbuf);
+    av_free(mask);
+    return ret;
+}
+
+static int compare_ocl_device_desc(const void *a, const void *b)
+{
+    const OpenCLDeviceBenchmark* va = (const OpenCLDeviceBenchmark*)a;
+    const OpenCLDeviceBenchmark* vb = (const OpenCLDeviceBenchmark*)b;
+    return FFDIFFSIGN(va->runtime , vb->runtime);
+}
+
+int opt_opencl_bench(void *optctx, const char *opt, const char *arg)
+{
+    int i, j, nb_devices = 0, count = 0, ret = 0;
+    int64_t score = 0;
+    AVOpenCLDeviceList *device_list;
+    AVOpenCLDeviceNode *device_node = NULL;
+    OpenCLDeviceBenchmark *devices = NULL;
+    cl_platform_id platform;
+
+    ret = av_opencl_get_device_list(&device_list);
+    if (ret < 0) {
+        return ret;
+    }
+    for (i = 0; i < device_list->platform_num; i++)
+        nb_devices += device_list->platform_node[i]->device_num;
+    if (!nb_devices) {
+        av_log(NULL, AV_LOG_ERROR, "No OpenCL device detected!\n");
+        av_opencl_free_device_list(&device_list);
+        return AVERROR(EINVAL);
+    }
+    if (!(devices = av_malloc_array(nb_devices, sizeof(OpenCLDeviceBenchmark)))) {
+        av_log(NULL, AV_LOG_ERROR, "Could not allocate buffer\n");
+        av_opencl_free_device_list(&device_list);
+        return AVERROR(ENOMEM);
+    }
+
+    for (i = 0; i < device_list->platform_num; i++) {
+        for (j = 0; j < device_list->platform_node[i]->device_num; j++) {
+            device_node = device_list->platform_node[i]->device_node[j];
+            platform = device_list->platform_node[i]->platform_id;
+            score = av_opencl_benchmark(device_node, platform, run_opencl_bench);
+            if (score > 0) {
+                devices[count].platform_idx = i;
+                devices[count].device_idx = j;
+                devices[count].runtime = score;
+                av_strlcpy(devices[count].device_name, device_node->device_name,
+                           sizeof(devices[count].device_name));
+                count++;
+            }
+        }
+    }
+    qsort(devices, count, sizeof(OpenCLDeviceBenchmark), compare_ocl_device_desc);
+    fprintf(stderr, "platform_idx\tdevice_idx\tdevice_name\truntime\n");
+    for (i = 0; i < count; i++)
+        fprintf(stdout, "%d\t%d\t%s\t%"PRId64"\n",
+                devices[i].platform_idx, devices[i].device_idx,
+                devices[i].device_name, devices[i].runtime);
+
+    av_opencl_free_device_list(&device_list);
+    av_free(devices);
+    return 0;
+}
+
+int opt_opencl(void *optctx, const char *opt, const char *arg)
+{
+    char *key, *value;
+    const char *opts = arg;
+    int ret = 0;
+    while (*opts) {
+        ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value);
+        if (ret < 0)
+            return ret;
+        ret = av_opencl_set_option(key, value);
+        if (ret < 0)
+            return ret;
+        if (*opts)
+            opts++;
+    }
+    return ret;
+}
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
new file mode 100644
index 0000000000..1d248bc269
--- /dev/null
+++ b/fftools/ffmpeg.c
@@ -0,0 +1,4826 @@
+/*
+ * Copyright (c) 2000-2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * multimedia converter based on the FFmpeg libraries
+ */
+
+#include "config.h"
+#include <ctype.h>
+#include <string.h>
+#include <math.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdatomic.h>
+#include <stdint.h>
+
+#if HAVE_IO_H
+#include <io.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "libavformat/avformat.h"
+#include "libavdevice/avdevice.h"
+#include "libswresample/swresample.h"
+#include "libavutil/opt.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/samplefmt.h"
+#include "libavutil/fifo.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/dict.h"
+#include "libavutil/display.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/avstring.h"
+#include "libavutil/libm.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/timestamp.h"
+#include "libavutil/bprint.h"
+#include "libavutil/time.h"
+#include "libavutil/threadmessage.h"
+#include "libavcodec/mathops.h"
+#include "libavformat/os_support.h"
+
+# include "libavfilter/avfilter.h"
+# include "libavfilter/buffersrc.h"
+# include "libavfilter/buffersink.h"
+
+#if HAVE_SYS_RESOURCE_H
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/resource.h>
+#elif HAVE_GETPROCESSTIMES
+#include <windows.h>
+#endif
+#if HAVE_GETPROCESSMEMORYINFO
+#include <windows.h>
+#include <psapi.h>
+#endif
+#if HAVE_SETCONSOLECTRLHANDLER
+#include <windows.h>
+#endif
+
+
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#if HAVE_TERMIOS_H
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <termios.h>
+#elif HAVE_KBHIT
+#include <conio.h>
+#endif
+
+#if HAVE_PTHREADS
+#include <pthread.h>
+#endif
+
+#include <time.h>
+
+#include "ffmpeg.h"
+#include "cmdutils.h"
+
+#include "libavutil/avassert.h"
+
+const char program_name[] = "ffmpeg";
+const int program_birth_year = 2000;
+
+static FILE *vstats_file;
+
+const char *const forced_keyframes_const_names[] = {
+    "n",
+    "n_forced",
+    "prev_forced_n",
+    "prev_forced_t",
+    "t",
+    NULL
+};
+
+static void do_video_stats(OutputStream *ost, int frame_size);
+static int64_t getutime(void);
+static int64_t getmaxrss(void);
+static int ifilter_has_all_input_formats(FilterGraph *fg);
+
+static int run_as_daemon  = 0;
+static int nb_frames_dup = 0;
+static unsigned dup_warning = 1000;
+static int nb_frames_drop = 0;
+static int64_t decode_error_stat[2];
+
+static int want_sdp = 1;
+
+static int current_time;
+AVIOContext *progress_avio = NULL;
+
+static uint8_t *subtitle_out;
+
+InputStream **input_streams = NULL;
+int        nb_input_streams = 0;
+InputFile   **input_files   = NULL;
+int        nb_input_files   = 0;
+
+OutputStream **output_streams = NULL;
+int         nb_output_streams = 0;
+OutputFile   **output_files   = NULL;
+int         nb_output_files   = 0;
+
+FilterGraph **filtergraphs;
+int        nb_filtergraphs;
+
+#if HAVE_TERMIOS_H
+
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+static int restore_tty;
+#endif
+
+#if HAVE_PTHREADS
+static void free_input_threads(void);
+#endif
+
+/* sub2video hack:
+   Convert subtitles to video with alpha to insert them in filter graphs.
+   This is a temporary solution until libavfilter gets real subtitles support.
+ */
+
+static int sub2video_get_blank_frame(InputStream *ist)
+{
+    int ret;
+    AVFrame *frame = ist->sub2video.frame;
+
+    av_frame_unref(frame);
+    ist->sub2video.frame->width  = ist->dec_ctx->width  ? ist->dec_ctx->width  : ist->sub2video.w;
+    ist->sub2video.frame->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
+    ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
+    if ((ret = av_frame_get_buffer(frame, 32)) < 0)
+        return ret;
+    memset(frame->data[0], 0, frame->height * frame->linesize[0]);
+    return 0;
+}
+
+static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
+                                AVSubtitleRect *r)
+{
+    uint32_t *pal, *dst2;
+    uint8_t *src, *src2;
+    int x, y;
+
+    if (r->type != SUBTITLE_BITMAP) {
+        av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
+        return;
+    }
+    if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
+        av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n",
+            r->x, r->y, r->w, r->h, w, h
+        );
+        return;
+    }
+
+    dst += r->y * dst_linesize + r->x * 4;
+    src = r->data[0];
+    pal = (uint32_t *)r->data[1];
+    for (y = 0; y < r->h; y++) {
+        dst2 = (uint32_t *)dst;
+        src2 = src;
+        for (x = 0; x < r->w; x++)
+            *(dst2++) = pal[*(src2++)];
+        dst += dst_linesize;
+        src += r->linesize[0];
+    }
+}
+
+static void sub2video_push_ref(InputStream *ist, int64_t pts)
+{
+    AVFrame *frame = ist->sub2video.frame;
+    int i;
+
+    av_assert1(frame->data[0]);
+    ist->sub2video.last_pts = frame->pts = pts;
+    for (i = 0; i < ist->nb_filters; i++)
+        av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
+                                     AV_BUFFERSRC_FLAG_KEEP_REF |
+                                     AV_BUFFERSRC_FLAG_PUSH);
+}
+
+void sub2video_update(InputStream *ist, AVSubtitle *sub)
+{
+    AVFrame *frame = ist->sub2video.frame;
+    int8_t *dst;
+    int     dst_linesize;
+    int num_rects, i;
+    int64_t pts, end_pts;
+
+    if (!frame)
+        return;
+    if (sub) {
+        pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
+                                 AV_TIME_BASE_Q, ist->st->time_base);
+        end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
+                                 AV_TIME_BASE_Q, ist->st->time_base);
+        num_rects = sub->num_rects;
+    } else {
+        pts       = ist->sub2video.end_pts;
+        end_pts   = INT64_MAX;
+        num_rects = 0;
+    }
+    if (sub2video_get_blank_frame(ist) < 0) {
+        av_log(ist->dec_ctx, AV_LOG_ERROR,
+               "Impossible to get a blank canvas.\n");
+        return;
+    }
+    dst          = frame->data    [0];
+    dst_linesize = frame->linesize[0];
+    for (i = 0; i < num_rects; i++)
+        sub2video_copy_rect(dst, dst_linesize, frame->width, frame->height, sub->rects[i]);
+    sub2video_push_ref(ist, pts);
+    ist->sub2video.end_pts = end_pts;
+}
+
+static void sub2video_heartbeat(InputStream *ist, int64_t pts)
+{
+    InputFile *infile = input_files[ist->file_index];
+    int i, j, nb_reqs;
+    int64_t pts2;
+
+    /* When a frame is read from a file, examine all sub2video streams in
+       the same file and send the sub2video frame again. Otherwise, decoded
+       video frames could be accumulating in the filter graph while a filter
+       (possibly overlay) is desperately waiting for a subtitle frame. */
+    for (i = 0; i < infile->nb_streams; i++) {
+        InputStream *ist2 = input_streams[infile->ist_index + i];
+        if (!ist2->sub2video.frame)
+            continue;
+        /* subtitles seem to be usually muxed ahead of other streams;
+           if not, subtracting a larger time here is necessary */
+        pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
+        /* do not send the heartbeat frame if the subtitle is already ahead */
+        if (pts2 <= ist2->sub2video.last_pts)
+            continue;
+        if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
+            sub2video_update(ist2, NULL);
+        for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
+            nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
+        if (nb_reqs)
+            sub2video_push_ref(ist2, pts2);
+    }
+}
+
+static void sub2video_flush(InputStream *ist)
+{
+    int i;
+
+    if (ist->sub2video.end_pts < INT64_MAX)
+        sub2video_update(ist, NULL);
+    for (i = 0; i < ist->nb_filters; i++)
+        av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
+}
+
+/* end of sub2video hack */
+
+static void term_exit_sigsafe(void)
+{
+#if HAVE_TERMIOS_H
+    if(restore_tty)
+        tcsetattr (0, TCSANOW, &oldtty);
+#endif
+}
+
+void term_exit(void)
+{
+    av_log(NULL, AV_LOG_QUIET, "%s", "");
+    term_exit_sigsafe();
+}
+
+static volatile int received_sigterm = 0;
+static volatile int received_nb_signals = 0;
+static atomic_int transcode_init_done = ATOMIC_VAR_INIT(0);
+static volatile int ffmpeg_exited = 0;
+static int main_return_code = 0;
+
+static void
+sigterm_handler(int sig)
+{
+    received_sigterm = sig;
+    received_nb_signals++;
+    term_exit_sigsafe();
+    if(received_nb_signals > 3) {
+        write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
+                           strlen("Received > 3 system signals, hard exiting\n"));
+
+        exit(123);
+    }
+}
+
+#if HAVE_SETCONSOLECTRLHANDLER
+static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
+{
+    av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);
+
+    switch (fdwCtrlType)
+    {
+    case CTRL_C_EVENT:
+    case CTRL_BREAK_EVENT:
+        sigterm_handler(SIGINT);
+        return TRUE;
+
+    case CTRL_CLOSE_EVENT:
+    case CTRL_LOGOFF_EVENT:
+    case CTRL_SHUTDOWN_EVENT:
+        sigterm_handler(SIGTERM);
+        /* Basically, with these 3 events, when we return from this method the
+           process is hard terminated, so stall as long as we need to
+           to try and let the main thread(s) clean up and gracefully terminate
+           (we have at most 5 seconds, but should be done far before that). */
+        while (!ffmpeg_exited) {
+            Sleep(0);
+        }
+        return TRUE;
+
+    default:
+        av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
+        return FALSE;
+    }
+}
+#endif
+
+void term_init(void)
+{
+#if HAVE_TERMIOS_H
+    if (!run_as_daemon && stdin_interaction) {
+        struct termios tty;
+        if (tcgetattr (0, &tty) == 0) {
+            oldtty = tty;
+            restore_tty = 1;
+
+            tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+                             |INLCR|IGNCR|ICRNL|IXON);
+            tty.c_oflag |= OPOST;
+            tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
+            tty.c_cflag &= ~(CSIZE|PARENB);
+            tty.c_cflag |= CS8;
+            tty.c_cc[VMIN] = 1;
+            tty.c_cc[VTIME] = 0;
+
+            tcsetattr (0, TCSANOW, &tty);
+        }
+        signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
+    }
+#endif
+
+    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
+    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
+#ifdef SIGXCPU
+    signal(SIGXCPU, sigterm_handler);
+#endif
+#if HAVE_SETCONSOLECTRLHANDLER
+    SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
+#endif
+}
+
+/* read a key without blocking */
+static int read_key(void)
+{
+    unsigned char ch;
+#if HAVE_TERMIOS_H
+    int n = 1;
+    struct timeval tv;
+    fd_set rfds;
+
+    FD_ZERO(&rfds);
+    FD_SET(0, &rfds);
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+    n = select(1, &rfds, NULL, NULL, &tv);
+    if (n > 0) {
+        n = read(0, &ch, 1);
+        if (n == 1)
+            return ch;
+
+        return n;
+    }
+#elif HAVE_KBHIT
+#    if HAVE_PEEKNAMEDPIPE
+    static int is_pipe;
+    static HANDLE input_handle;
+    DWORD dw, nchars;
+    if(!input_handle){
+        input_handle = GetStdHandle(STD_INPUT_HANDLE);
+        is_pipe = !GetConsoleMode(input_handle, &dw);
+    }
+
+    if (is_pipe) {
+        /* When running under a GUI, you will end here. */
+        if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
+            // input pipe may have been closed by the program that ran ffmpeg
+            return -1;
+        }
+        //Read it
+        if(nchars != 0) {
+            read(0, &ch, 1);
+            return ch;
+        }else{
+            return -1;
+        }
+    }
+#    endif
+    if(kbhit())
+        return(getch());
+#endif
+    return -1;
+}
+
+static int decode_interrupt_cb(void *ctx)
+{
+    return received_nb_signals > atomic_load(&transcode_init_done);
+}
+
+const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
+
+static void ffmpeg_cleanup(int ret)
+{
+    int i, j;
+
+    if (do_benchmark) {
+        int maxrss = getmaxrss() / 1024;
+        av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
+    }
+
+    for (i = 0; i < nb_filtergraphs; i++) {
+        FilterGraph *fg = filtergraphs[i];
+        avfilter_graph_free(&fg->graph);
+        for (j = 0; j < fg->nb_inputs; j++) {
+            while (av_fifo_size(fg->inputs[j]->frame_queue)) {
+                AVFrame *frame;
+                av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
+                                     sizeof(frame), NULL);
+                av_frame_free(&frame);
+            }
+            av_fifo_freep(&fg->inputs[j]->frame_queue);
+            if (fg->inputs[j]->ist->sub2video.sub_queue) {
+                while (av_fifo_size(fg->inputs[j]->ist->sub2video.sub_queue)) {
+                    AVSubtitle sub;
+                    av_fifo_generic_read(fg->inputs[j]->ist->sub2video.sub_queue,
+                                         &sub, sizeof(sub), NULL);
+                    avsubtitle_free(&sub);
+                }
+                av_fifo_freep(&fg->inputs[j]->ist->sub2video.sub_queue);
+            }
+            av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
+            av_freep(&fg->inputs[j]->name);
+            av_freep(&fg->inputs[j]);
+        }
+        av_freep(&fg->inputs);
+        for (j = 0; j < fg->nb_outputs; j++) {
+            av_freep(&fg->outputs[j]->name);
+            av_freep(&fg->outputs[j]->formats);
+            av_freep(&fg->outputs[j]->channel_layouts);
+            av_freep(&fg->outputs[j]->sample_rates);
+            av_freep(&fg->outputs[j]);
+        }
+        av_freep(&fg->outputs);
+        av_freep(&fg->graph_desc);
+
+        av_freep(&filtergraphs[i]);
+    }
+    av_freep(&filtergraphs);
+
+    av_freep(&subtitle_out);
+
+    /* close files */
+    for (i = 0; i < nb_output_files; i++) {
+        OutputFile *of = output_files[i];
+        AVFormatContext *s;
+        if (!of)
+            continue;
+        s = of->ctx;
+        if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
+            avio_closep(&s->pb);
+        avformat_free_context(s);
+        av_dict_free(&of->opts);
+
+        av_freep(&output_files[i]);
+    }
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+
+        if (!ost)
+            continue;
+
+        for (j = 0; j < ost->nb_bitstream_filters; j++)
+            av_bsf_free(&ost->bsf_ctx[j]);
+        av_freep(&ost->bsf_ctx);
+
+        av_frame_free(&ost->filtered_frame);
+        av_frame_free(&ost->last_frame);
+        av_dict_free(&ost->encoder_opts);
+
+        av_parser_close(ost->parser);
+        avcodec_free_context(&ost->parser_avctx);
+
+        av_freep(&ost->forced_keyframes);
+        av_expr_free(ost->forced_keyframes_pexpr);
+        av_freep(&ost->avfilter);
+        av_freep(&ost->logfile_prefix);
+
+        av_freep(&ost->audio_channels_map);
+        ost->audio_channels_mapped = 0;
+
+        av_dict_free(&ost->sws_dict);
+
+        avcodec_free_context(&ost->enc_ctx);
+        avcodec_parameters_free(&ost->ref_par);
+
+        if (ost->muxing_queue) {
+            while (av_fifo_size(ost->muxing_queue)) {
+                AVPacket pkt;
+                av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
+                av_packet_unref(&pkt);
+            }
+            av_fifo_freep(&ost->muxing_queue);
+        }
+
+        av_freep(&output_streams[i]);
+    }
+#if HAVE_PTHREADS
+    free_input_threads();
+#endif
+    for (i = 0; i < nb_input_files; i++) {
+        avformat_close_input(&input_files[i]->ctx);
+        av_freep(&input_files[i]);
+    }
+    for (i = 0; i < nb_input_streams; i++) {
+        InputStream *ist = input_streams[i];
+
+        av_frame_free(&ist->decoded_frame);
+        av_frame_free(&ist->filter_frame);
+        av_dict_free(&ist->decoder_opts);
+        avsubtitle_free(&ist->prev_sub.subtitle);
+        av_frame_free(&ist->sub2video.frame);
+        av_freep(&ist->filters);
+        av_freep(&ist->hwaccel_device);
+        av_freep(&ist->dts_buffer);
+
+        avcodec_free_context(&ist->dec_ctx);
+
+        av_freep(&input_streams[i]);
+    }
+
+    if (vstats_file) {
+        if (fclose(vstats_file))
+            av_log(NULL, AV_LOG_ERROR,
+                   "Error closing vstats file, loss of information possible: %s\n",
+                   av_err2str(AVERROR(errno)));
+    }
+    av_freep(&vstats_filename);
+
+    av_freep(&input_streams);
+    av_freep(&input_files);
+    av_freep(&output_streams);
+    av_freep(&output_files);
+
+    uninit_opts();
+
+    avformat_network_deinit();
+
+    if (received_sigterm) {
+        av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
+               (int) received_sigterm);
+    } else if (ret && atomic_load(&transcode_init_done)) {
+        av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
+    }
+    term_exit();
+    ffmpeg_exited = 1;
+}
+
+void remove_avoptions(AVDictionary **a, AVDictionary *b)
+{
+    AVDictionaryEntry *t = NULL;
+
+    while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
+        av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
+    }
+}
+
+void assert_avoptions(AVDictionary *m)
+{
+    AVDictionaryEntry *t;
+    if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
+        exit_program(1);
+    }
+}
+
+static void abort_codec_experimental(AVCodec *c, int encoder)
+{
+    exit_program(1);
+}
+
+static void update_benchmark(const char *fmt, ...)
+{
+    if (do_benchmark_all) {
+        int64_t t = getutime();
+        va_list va;
+        char buf[1024];
+
+        if (fmt) {
+            va_start(va, fmt);
+            vsnprintf(buf, sizeof(buf), fmt, va);
+            va_end(va);
+            av_log(NULL, AV_LOG_INFO, "bench: %8"PRIu64" %s \n", t - current_time, buf);
+        }
+        current_time = t;
+    }
+}
+
+static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
+{
+    int i;
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost2 = output_streams[i];
+        ost2->finished |= ost == ost2 ? this_stream : others;
+    }
+}
+
+static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
+{
+    AVFormatContext *s = of->ctx;
+    AVStream *st = ost->st;
+    int ret;
+
+    /*
+     * Audio encoders may split the packets --  #frames in != #packets out.
+     * But there is no reordering, so we can limit the number of output packets
+     * by simply dropping them here.
+     * Counting encoded video frames needs to be done separately because of
+     * reordering, see do_video_out().
+     * Do not count the packet when unqueued because it has been counted when queued.
+     */
+    if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed) && !unqueue) {
+        if (ost->frame_number >= ost->max_frames) {
+            av_packet_unref(pkt);
+            return;
+        }
+        ost->frame_number++;
+    }
+
+    if (!of->header_written) {
+        AVPacket tmp_pkt = {0};
+        /* the muxer is not initialized yet, buffer the packet */
+        if (!av_fifo_space(ost->muxing_queue)) {
+            int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
+                                 ost->max_muxing_queue_size);
+            if (new_size <= av_fifo_size(ost->muxing_queue)) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "Too many packets buffered for output stream %d:%d.\n",
+                       ost->file_index, ost->st->index);
+                exit_program(1);
+            }
+            ret = av_fifo_realloc2(ost->muxing_queue, new_size);
+            if (ret < 0)
+                exit_program(1);
+        }
+        ret = av_packet_ref(&tmp_pkt, pkt);
+        if (ret < 0)
+            exit_program(1);
+        av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
+        av_packet_unref(pkt);
+        return;
+    }
+
+    if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
+        (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
+        pkt->pts = pkt->dts = AV_NOPTS_VALUE;
+
+    if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+        int i;
+        uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
+                                              NULL);
+        ost->quality = sd ? AV_RL32(sd) : -1;
+        ost->pict_type = sd ? sd[4] : AV_PICTURE_TYPE_NONE;
+
+        for (i = 0; i<FF_ARRAY_ELEMS(ost->error); i++) {
+            if (sd && i < sd[5])
+                ost->error[i] = AV_RL64(sd + 8 + 8*i);
+            else
+                ost->error[i] = -1;
+        }
+
+        if (ost->frame_rate.num && ost->is_cfr) {
+            if (pkt->duration > 0)
+                av_log(NULL, AV_LOG_WARNING, "Overriding packet duration by frame rate, this should not happen\n");
+            pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
+                                         ost->mux_timebase);
+        }
+    }
+
+    av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
+
+    if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
+        if (pkt->dts != AV_NOPTS_VALUE &&
+            pkt->pts != AV_NOPTS_VALUE &&
+            pkt->dts > pkt->pts) {
+            av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
+                   pkt->dts, pkt->pts,
+                   ost->file_index, ost->st->index);
+            pkt->pts =
+            pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
+                     - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
+                     - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
+        }
+        if ((st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
+            pkt->dts != AV_NOPTS_VALUE &&
+            !(st->codecpar->codec_id == AV_CODEC_ID_VP9 && ost->stream_copy) &&
+            ost->last_mux_dts != AV_NOPTS_VALUE) {
+            int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
+            if (pkt->dts < max) {
+                int loglevel = max - pkt->dts > 2 || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
+                av_log(s, loglevel, "Non-monotonous DTS in output stream "
+                       "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
+                       ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
+                if (exit_on_error) {
+                    av_log(NULL, AV_LOG_FATAL, "aborting.\n");
+                    exit_program(1);
+                }
+                av_log(s, loglevel, "changing to %"PRId64". This may result "
+                       "in incorrect timestamps in the output file.\n",
+                       max);
+                if (pkt->pts >= pkt->dts)
+                    pkt->pts = FFMAX(pkt->pts, max);
+                pkt->dts = max;
+            }
+        }
+    }
+    ost->last_mux_dts = pkt->dts;
+
+    ost->data_size += pkt->size;
+    ost->packets_written++;
+
+    pkt->stream_index = ost->index;
+
+    if (debug_ts) {
+        av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
+                "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
+                av_get_media_type_string(ost->enc_ctx->codec_type),
+                av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
+                av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
+                pkt->size
+              );
+    }
+
+    ret = av_interleaved_write_frame(s, pkt);
+    if (ret < 0) {
+        print_error("av_interleaved_write_frame()", ret);
+        main_return_code = 1;
+        close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
+    }
+    av_packet_unref(pkt);
+}
+
+static void close_output_stream(OutputStream *ost)
+{
+    OutputFile *of = output_files[ost->file_index];
+
+    ost->finished |= ENCODER_FINISHED;
+    if (of->shortest) {
+        int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
+        of->recording_time = FFMIN(of->recording_time, end);
+    }
+}
+
+/*
+ * Send a single packet to the output, applying any bitstream filters
+ * associated with the output stream.  This may result in any number
+ * of packets actually being written, depending on what bitstream
+ * filters are applied.  The supplied packet is consumed and will be
+ * blank (as if newly-allocated) when this function returns.
+ *
+ * If eof is set, instead indicate EOF to all bitstream filters and
+ * therefore flush any delayed packets to the output.  A blank packet
+ * must be supplied in this case.
+ */
+static void output_packet(OutputFile *of, AVPacket *pkt,
+                          OutputStream *ost, int eof)
+{
+    int ret = 0;
+
+    /* apply the output bitstream filters, if any */
+    if (ost->nb_bitstream_filters) {
+        int idx;
+
+        ret = av_bsf_send_packet(ost->bsf_ctx[0], eof ? NULL : pkt);
+        if (ret < 0)
+            goto finish;
+
+        eof = 0;
+        idx = 1;
+        while (idx) {
+            /* get a packet from the previous filter up the chain */
+            ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
+            if (ret == AVERROR(EAGAIN)) {
+                ret = 0;
+                idx--;
+                continue;
+            } else if (ret == AVERROR_EOF) {
+                eof = 1;
+            } else if (ret < 0)
+                goto finish;
+
+            /* send it to the next filter down the chain or to the muxer */
+            if (idx < ost->nb_bitstream_filters) {
+                ret = av_bsf_send_packet(ost->bsf_ctx[idx], eof ? NULL : pkt);
+                if (ret < 0)
+                    goto finish;
+                idx++;
+                eof = 0;
+            } else if (eof)
+                goto finish;
+            else
+                write_packet(of, pkt, ost, 0);
+        }
+    } else if (!eof)
+        write_packet(of, pkt, ost, 0);
+
+finish:
+    if (ret < 0 && ret != AVERROR_EOF) {
+        av_log(NULL, AV_LOG_ERROR, "Error applying bitstream filters to an output "
+               "packet for stream #%d:%d.\n", ost->file_index, ost->index);
+        if(exit_on_error)
+            exit_program(1);
+    }
+}
+
+static int check_recording_time(OutputStream *ost)
+{
+    OutputFile *of = output_files[ost->file_index];
+
+    if (of->recording_time != INT64_MAX &&
+        av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
+                      AV_TIME_BASE_Q) >= 0) {
+        close_output_stream(ost);
+        return 0;
+    }
+    return 1;
+}
+
+static void do_audio_out(OutputFile *of, OutputStream *ost,
+                         AVFrame *frame)
+{
+    AVCodecContext *enc = ost->enc_ctx;
+    AVPacket pkt;
+    int ret;
+
+    av_init_packet(&pkt);
+    pkt.data = NULL;
+    pkt.size = 0;
+
+    if (!check_recording_time(ost))
+        return;
+
+    if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
+        frame->pts = ost->sync_opts;
+    ost->sync_opts = frame->pts + frame->nb_samples;
+    ost->samples_encoded += frame->nb_samples;
+    ost->frames_encoded++;
+
+    av_assert0(pkt.size || !pkt.data);
+    update_benchmark(NULL);
+    if (debug_ts) {
+        av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
+               "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
+               av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
+               enc->time_base.num, enc->time_base.den);
+    }
+
+    ret = avcodec_send_frame(enc, frame);
+    if (ret < 0)
+        goto error;
+
+    while (1) {
+        ret = avcodec_receive_packet(enc, &pkt);
+        if (ret == AVERROR(EAGAIN))
+            break;
+        if (ret < 0)
+            goto error;
+
+        update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
+
+        av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
+
+        if (debug_ts) {
+            av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
+                   "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
+                   av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
+                   av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
+        }
+
+        output_packet(of, &pkt, ost, 0);
+    }
+
+    return;
+error:
+    av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
+    exit_program(1);
+}
+
+static void do_subtitle_out(OutputFile *of,
+                            OutputStream *ost,
+                            AVSubtitle *sub)
+{
+    int subtitle_out_max_size = 1024 * 1024;
+    int subtitle_out_size, nb, i;
+    AVCodecContext *enc;
+    AVPacket pkt;
+    int64_t pts;
+
+    if (sub->pts == AV_NOPTS_VALUE) {
+        av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
+        if (exit_on_error)
+            exit_program(1);
+        return;
+    }
+
+    enc = ost->enc_ctx;
+
+    if (!subtitle_out) {
+        subtitle_out = av_malloc(subtitle_out_max_size);
+        if (!subtitle_out) {
+            av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
+            exit_program(1);
+        }
+    }
+
+    /* Note: DVB subtitle need one packet to draw them and one other
+       packet to clear them */
+    /* XXX: signal it in the codec context ? */
+    if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
+        nb = 2;
+    else
+        nb = 1;
+
+    /* shift timestamp to honor -ss and make check_recording_time() work with -t */
+    pts = sub->pts;
+    if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
+        pts -= output_files[ost->file_index]->start_time;
+    for (i = 0; i < nb; i++) {
+        unsigned save_num_rects = sub->num_rects;
+
+        ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
+        if (!check_recording_time(ost))
+            return;
+
+        sub->pts = pts;
+        // start_display_time is required to be 0
+        sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
+        sub->end_display_time  -= sub->start_display_time;
+        sub->start_display_time = 0;
+        if (i == 1)
+            sub->num_rects = 0;
+
+        ost->frames_encoded++;
+
+        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
+                                                    subtitle_out_max_size, sub);
+        if (i == 1)
+            sub->num_rects = save_num_rects;
+        if (subtitle_out_size < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
+            exit_program(1);
+        }
+
+        av_init_packet(&pkt);
+        pkt.data = subtitle_out;
+        pkt.size = subtitle_out_size;
+        pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
+        pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
+        if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
+            /* XXX: the pts correction is handled here. Maybe handling
+               it in the codec would be better */
+            if (i == 0)
+                pkt.pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
+            else
+                pkt.pts += av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->mux_timebase);
+        }
+        pkt.dts = pkt.pts;
+        output_packet(of, &pkt, ost, 0);
+    }
+}
+
+static void do_video_out(OutputFile *of,
+                         OutputStream *ost,
+                         AVFrame *next_picture,
+                         double sync_ipts)
+{
+    int ret, format_video_sync;
+    AVPacket pkt;
+    AVCodecContext *enc = ost->enc_ctx;
+    AVCodecParameters *mux_par = ost->st->codecpar;
+    AVRational frame_rate;
+    int nb_frames, nb0_frames, i;
+    double delta, delta0;
+    double duration = 0;
+    int frame_size = 0;
+    InputStream *ist = NULL;
+    AVFilterContext *filter = ost->filter->filter;
+
+    if (ost->source_index >= 0)
+        ist = input_streams[ost->source_index];
+
+    frame_rate = av_buffersink_get_frame_rate(filter);
+    if (frame_rate.num > 0 && frame_rate.den > 0)
+        duration = 1/(av_q2d(frame_rate) * av_q2d(enc->time_base));
+
+    if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
+        duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
+
+    if (!ost->filters_script &&
+        !ost->filters &&
+        next_picture &&
+        ist &&
+        lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
+        duration = lrintf(next_picture->pkt_duration * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
+    }
+
+    if (!next_picture) {
+        //end, flushing
+        nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
+                                          ost->last_nb0_frames[1],
+                                          ost->last_nb0_frames[2]);
+    } else {
+        delta0 = sync_ipts - ost->sync_opts; // delta0 is the "drift" between the input frame (next_picture) and where it would fall in the output.
+        delta  = delta0 + duration;
+
+        /* by default, we output a single frame */
+        nb0_frames = 0; // tracks the number of times the PREVIOUS frame should be duplicated, mostly for variable framerate (VFR)
+        nb_frames = 1;
+
+        format_video_sync = video_sync_method;
+        if (format_video_sync == VSYNC_AUTO) {
+            if(!strcmp(of->ctx->oformat->name, "avi")) {
+                format_video_sync = VSYNC_VFR;
+            } else
+                format_video_sync = (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? ((of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
+            if (   ist
+                && format_video_sync == VSYNC_CFR
+                && input_files[ist->file_index]->ctx->nb_streams == 1
+                && input_files[ist->file_index]->input_ts_offset == 0) {
+                format_video_sync = VSYNC_VSCFR;
+            }
+            if (format_video_sync == VSYNC_CFR && copy_ts) {
+                format_video_sync = VSYNC_VSCFR;
+            }
+        }
+        ost->is_cfr = (format_video_sync == VSYNC_CFR || format_video_sync == VSYNC_VSCFR);
+
+        if (delta0 < 0 &&
+            delta > 0 &&
+            format_video_sync != VSYNC_PASSTHROUGH &&
+            format_video_sync != VSYNC_DROP) {
+            if (delta0 < -0.6) {
+                av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
+            } else
+                av_log(NULL, AV_LOG_DEBUG, "Clipping frame in rate conversion by %f\n", -delta0);
+            sync_ipts = ost->sync_opts;
+            duration += delta0;
+            delta0 = 0;
+        }
+
+        switch (format_video_sync) {
+        case VSYNC_VSCFR:
+            if (ost->frame_number == 0 && delta0 >= 0.5) {
+                av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta0));
+                delta = duration;
+                delta0 = 0;
+                ost->sync_opts = lrint(sync_ipts);
+            }
+        case VSYNC_CFR:
+            // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
+            if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
+                nb_frames = 0;
+            } else if (delta < -1.1)
+                nb_frames = 0;
+            else if (delta > 1.1) {
+                nb_frames = lrintf(delta);
+                if (delta0 > 1.1)
+                    nb0_frames = lrintf(delta0 - 0.6);
+            }
+            break;
+        case VSYNC_VFR:
+            if (delta <= -0.6)
+                nb_frames = 0;
+            else if (delta > 0.6)
+                ost->sync_opts = lrint(sync_ipts);
+            break;
+        case VSYNC_DROP:
+        case VSYNC_PASSTHROUGH:
+            ost->sync_opts = lrint(sync_ipts);
+            break;
+        default:
+            av_assert0(0);
+        }
+    }
+
+    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
+    nb0_frames = FFMIN(nb0_frames, nb_frames);
+
+    memmove(ost->last_nb0_frames + 1,
+            ost->last_nb0_frames,
+            sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
+    ost->last_nb0_frames[0] = nb0_frames;
+
+    if (nb0_frames == 0 && ost->last_dropped) {
+        nb_frames_drop++;
+        av_log(NULL, AV_LOG_VERBOSE,
+               "*** dropping frame %d from stream %d at ts %"PRId64"\n",
+               ost->frame_number, ost->st->index, ost->last_frame->pts);
+    }
+    if (nb_frames > (nb0_frames && ost->last_dropped) + (nb_frames > nb0_frames)) {
+        if (nb_frames > dts_error_threshold * 30) {
+            av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
+            nb_frames_drop++;
+            return;
+        }
+        nb_frames_dup += nb_frames - (nb0_frames && ost->last_dropped) - (nb_frames > nb0_frames);
+        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
+        if (nb_frames_dup > dup_warning) {
+            av_log(NULL, AV_LOG_WARNING, "More than %d frames duplicated\n", dup_warning);
+            dup_warning *= 10;
+        }
+    }
+    ost->last_dropped = nb_frames == nb0_frames && next_picture;
+
+  /* duplicates frame if needed */
+  for (i = 0; i < nb_frames; i++) {
+    AVFrame *in_picture;
+    av_init_packet(&pkt);
+    pkt.data = NULL;
+    pkt.size = 0;
+
+    if (i < nb0_frames && ost->last_frame) {
+        in_picture = ost->last_frame;
+    } else
+        in_picture = next_picture;
+
+    if (!in_picture)
+        return;
+
+    in_picture->pts = ost->sync_opts;
+
+#if 1
+    if (!check_recording_time(ost))
+#else
+    if (ost->frame_number >= ost->max_frames)
+#endif
+        return;
+
+#if FF_API_LAVF_FMT_RAWPICTURE
+    if (of->ctx->oformat->flags & AVFMT_RAWPICTURE &&
+        enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
+        /* raw pictures are written as AVPicture structure to
+           avoid any copies. We support temporarily the older
+           method. */
+        if (in_picture->interlaced_frame)
+            mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
+        else
+            mux_par->field_order = AV_FIELD_PROGRESSIVE;
+        pkt.data   = (uint8_t *)in_picture;
+        pkt.size   =  sizeof(AVPicture);
+        pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->mux_timebase);
+        pkt.flags |= AV_PKT_FLAG_KEY;
+
+        output_packet(of, &pkt, ost, 0);
+    } else
+#endif
+    {
+        int forced_keyframe = 0;
+        double pts_time;
+
+        if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
+            ost->top_field_first >= 0)
+            in_picture->top_field_first = !!ost->top_field_first;
+
+        if (in_picture->interlaced_frame) {
+            if (enc->codec->id == AV_CODEC_ID_MJPEG)
+                mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
+            else
+                mux_par->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
+        } else
+            mux_par->field_order = AV_FIELD_PROGRESSIVE;
+
+        in_picture->quality = enc->global_quality;
+        in_picture->pict_type = 0;
+
+        pts_time = in_picture->pts != AV_NOPTS_VALUE ?
+            in_picture->pts * av_q2d(enc->time_base) : NAN;
+        if (ost->forced_kf_index < ost->forced_kf_count &&
+            in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
+            ost->forced_kf_index++;
+            forced_keyframe = 1;
+        } else if (ost->forced_keyframes_pexpr) {
+            double res;
+            ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
+            res = av_expr_eval(ost->forced_keyframes_pexpr,
+                               ost->forced_keyframes_expr_const_values, NULL);
+            ff_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
+                    ost->forced_keyframes_expr_const_values[FKF_N],
+                    ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
+                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
+                    ost->forced_keyframes_expr_const_values[FKF_T],
+                    ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
+                    res);
+            if (res) {
+                forced_keyframe = 1;
+                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
+                    ost->forced_keyframes_expr_const_values[FKF_N];
+                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
+                    ost->forced_keyframes_expr_const_values[FKF_T];
+                ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
+            }
+
+            ost->forced_keyframes_expr_const_values[FKF_N] += 1;
+        } else if (   ost->forced_keyframes
+                   && !strncmp(ost->forced_keyframes, "source", 6)
+                   && in_picture->key_frame==1) {
+            forced_keyframe = 1;
+        }
+
+        if (forced_keyframe) {
+            in_picture->pict_type = AV_PICTURE_TYPE_I;
+            av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
+        }
+
+        update_benchmark(NULL);
+        if (debug_ts) {
+            av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
+                   "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
+                   av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
+                   enc->time_base.num, enc->time_base.den);
+        }
+
+        ost->frames_encoded++;
+
+        ret = avcodec_send_frame(enc, in_picture);
+        if (ret < 0)
+            goto error;
+
+        while (1) {
+            ret = avcodec_receive_packet(enc, &pkt);
+            update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
+            if (ret == AVERROR(EAGAIN))
+                break;
+            if (ret < 0)
+                goto error;
+
+            if (debug_ts) {
+                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
+                       "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
+                       av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
+                       av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
+            }
+
+            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & AV_CODEC_CAP_DELAY))
+                pkt.pts = ost->sync_opts;
+
+            av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
+
+            if (debug_ts) {
+                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
+                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
+                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->mux_timebase),
+                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->mux_timebase));
+            }
+
+            frame_size = pkt.size;
+            output_packet(of, &pkt, ost, 0);
+
+            /* if two pass, output log */
+            if (ost->logfile && enc->stats_out) {
+                fprintf(ost->logfile, "%s", enc->stats_out);
+            }
+        }
+    }
+    ost->sync_opts++;
+    /*
+     * For video, number of frames in == number of packets out.
+     * But there may be reordering, so we can't throw away frames on encoder
+     * flush, we need to limit them here, before they go into encoder.
+     */
+    ost->frame_number++;
+
+    if (vstats_filename && frame_size)
+        do_video_stats(ost, frame_size);
+  }
+
+    if (!ost->last_frame)
+        ost->last_frame = av_frame_alloc();
+    av_frame_unref(ost->last_frame);
+    if (next_picture && ost->last_frame)
+        av_frame_ref(ost->last_frame, next_picture);
+    else
+        av_frame_free(&ost->last_frame);
+
+    return;
+error:
+    av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
+    exit_program(1);
+}
+
+static double psnr(double d)
+{
+    return -10.0 * log10(d);
+}
+
+static void do_video_stats(OutputStream *ost, int frame_size)
+{
+    AVCodecContext *enc;
+    int frame_number;
+    double ti1, bitrate, avg_bitrate;
+
+    /* this is executed just the first time do_video_stats is called */
+    if (!vstats_file) {
+        vstats_file = fopen(vstats_filename, "w");
+        if (!vstats_file) {
+            perror("fopen");
+            exit_program(1);
+        }
+    }
+
+    enc = ost->enc_ctx;
+    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
+        frame_number = ost->st->nb_frames;
+        if (vstats_version <= 1) {
+            fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
+                    ost->quality / (float)FF_QP2LAMBDA);
+        } else  {
+            fprintf(vstats_file, "out= %2d st= %2d frame= %5d q= %2.1f ", ost->file_index, ost->index, frame_number,
+                    ost->quality / (float)FF_QP2LAMBDA);
+        }
+
+        if (ost->error[0]>=0 && (enc->flags & AV_CODEC_FLAG_PSNR))
+            fprintf(vstats_file, "PSNR= %6.2f ", psnr(ost->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
+
+        fprintf(vstats_file,"f_size= %6d ", frame_size);
+        /* compute pts value */
+        ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
+        if (ti1 < 0.01)
+            ti1 = 0.01;
+
+        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
+        avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
+        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
+               (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
+        fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(ost->pict_type));
+    }
+}
+
+static int init_output_stream(OutputStream *ost, char *error, int error_len);
+
+static void finish_output_stream(OutputStream *ost)
+{
+    OutputFile *of = output_files[ost->file_index];
+    int i;
+
+    ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
+
+    if (of->shortest) {
+        for (i = 0; i < of->ctx->nb_streams; i++)
+            output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
+    }
+}
+
+/**
+ * Get and encode new output from any of the filtergraphs, without causing
+ * activity.
+ *
+ * @return  0 for success, <0 for severe errors
+ */
+static int reap_filters(int flush)
+{
+    AVFrame *filtered_frame = NULL;
+    int i;
+
+    /* Reap all buffers present in the buffer sinks */
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+        OutputFile    *of = output_files[ost->file_index];
+        AVFilterContext *filter;
+        AVCodecContext *enc = ost->enc_ctx;
+        int ret = 0;
+
+        if (!ost->filter || !ost->filter->graph->graph)
+            continue;
+        filter = ost->filter->filter;
+
+        if (!ost->initialized) {
+            char error[1024] = "";
+            ret = init_output_stream(ost, error, sizeof(error));
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
+                       ost->file_index, ost->index, error);
+                exit_program(1);
+            }
+        }
+
+        if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
+            return AVERROR(ENOMEM);
+        }
+        filtered_frame = ost->filtered_frame;
+
+        while (1) {
+            double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
+            ret = av_buffersink_get_frame_flags(filter, filtered_frame,
+                                               AV_BUFFERSINK_FLAG_NO_REQUEST);
+            if (ret < 0) {
+                if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
+                    av_log(NULL, AV_LOG_WARNING,
+                           "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
+                } else if (flush && ret == AVERROR_EOF) {
+                    if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_VIDEO)
+                        do_video_out(of, ost, NULL, AV_NOPTS_VALUE);
+                }
+                break;
+            }
+            if (ost->finished) {
+                av_frame_unref(filtered_frame);
+                continue;
+            }
+            if (filtered_frame->pts != AV_NOPTS_VALUE) {
+                int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
+                AVRational filter_tb = av_buffersink_get_time_base(filter);
+                AVRational tb = enc->time_base;
+                int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
+
+                tb.den <<= extra_bits;
+                float_pts =
+                    av_rescale_q(filtered_frame->pts, filter_tb, tb) -
+                    av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
+                float_pts /= 1 << extra_bits;
+                // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
+                float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
+
+                filtered_frame->pts =
+                    av_rescale_q(filtered_frame->pts, filter_tb, enc->time_base) -
+                    av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
+            }
+            //if (ost->source_index >= 0)
+            //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
+
+            switch (av_buffersink_get_type(filter)) {
+            case AVMEDIA_TYPE_VIDEO:
+                if (!ost->frame_aspect_ratio.num)
+                    enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
+
+                if (debug_ts) {
+                    av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
+                            av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
+                            float_pts,
+                            enc->time_base.num, enc->time_base.den);
+                }
+
+                do_video_out(of, ost, filtered_frame, float_pts);
+                break;
+            case AVMEDIA_TYPE_AUDIO:
+                if (!(enc->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE) &&
+                    enc->channels != filtered_frame->channels) {
+                    av_log(NULL, AV_LOG_ERROR,
+                           "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
+                    break;
+                }
+                do_audio_out(of, ost, filtered_frame);
+                break;
+            default:
+                // TODO support subtitle filters
+                av_assert0(0);
+            }
+
+            av_frame_unref(filtered_frame);
+        }
+    }
+
+    return 0;
+}
+
+static void print_final_stats(int64_t total_size)
+{
+    uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
+    uint64_t subtitle_size = 0;
+    uint64_t data_size = 0;
+    float percent = -1.0;
+    int i, j;
+    int pass1_used = 1;
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+        switch (ost->enc_ctx->codec_type) {
+            case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
+            case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
+            case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
+            default:                 other_size += ost->data_size; break;
+        }
+        extra_size += ost->enc_ctx->extradata_size;
+        data_size  += ost->data_size;
+        if (   (ost->enc_ctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2))
+            != AV_CODEC_FLAG_PASS1)
+            pass1_used = 0;
+    }
+
+    if (data_size && total_size>0 && total_size >= data_size)
+        percent = 100.0 * (total_size - data_size) / data_size;
+
+    av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
+           video_size / 1024.0,
+           audio_size / 1024.0,
+           subtitle_size / 1024.0,
+           other_size / 1024.0,
+           extra_size / 1024.0);
+    if (percent >= 0.0)
+        av_log(NULL, AV_LOG_INFO, "%f%%", percent);
+    else
+        av_log(NULL, AV_LOG_INFO, "unknown");
+    av_log(NULL, AV_LOG_INFO, "\n");
+
+    /* print verbose per-stream stats */
+    for (i = 0; i < nb_input_files; i++) {
+        InputFile *f = input_files[i];
+        uint64_t total_packets = 0, total_size = 0;
+
+        av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
+               i, f->ctx->filename);
+
+        for (j = 0; j < f->nb_streams; j++) {
+            InputStream *ist = input_streams[f->ist_index + j];
+            enum AVMediaType type = ist->dec_ctx->codec_type;
+
+            total_size    += ist->data_size;
+            total_packets += ist->nb_packets;
+
+            av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
+                   i, j, media_type_string(type));
+            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
+                   ist->nb_packets, ist->data_size);
+
+            if (ist->decoding_needed) {
+                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
+                       ist->frames_decoded);
+                if (type == AVMEDIA_TYPE_AUDIO)
+                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
+                av_log(NULL, AV_LOG_VERBOSE, "; ");
+            }
+
+            av_log(NULL, AV_LOG_VERBOSE, "\n");
+        }
+
+        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
+               total_packets, total_size);
+    }
+
+    for (i = 0; i < nb_output_files; i++) {
+        OutputFile *of = output_files[i];
+        uint64_t total_packets = 0, total_size = 0;
+
+        av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
+               i, of->ctx->filename);
+
+        for (j = 0; j < of->ctx->nb_streams; j++) {
+            OutputStream *ost = output_streams[of->ost_index + j];
+            enum AVMediaType type = ost->enc_ctx->codec_type;
+
+            total_size    += ost->data_size;
+            total_packets += ost->packets_written;
+
+            av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
+                   i, j, media_type_string(type));
+            if (ost->encoding_needed) {
+                av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
+                       ost->frames_encoded);
+                if (type == AVMEDIA_TYPE_AUDIO)
+                    av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
+                av_log(NULL, AV_LOG_VERBOSE, "; ");
+            }
+
+            av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
+                   ost->packets_written, ost->data_size);
+
+            av_log(NULL, AV_LOG_VERBOSE, "\n");
+        }
+
+        av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
+               total_packets, total_size);
+    }
+    if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
+        av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
+        if (pass1_used) {
+            av_log(NULL, AV_LOG_WARNING, "\n");
+        } else {
+            av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
+        }
+    }
+}
+
+static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
+{
+    char buf[1024];
+    AVBPrint buf_script;
+    OutputStream *ost;
+    AVFormatContext *oc;
+    int64_t total_size;
+    AVCodecContext *enc;
+    int frame_number, vid, i;
+    double bitrate;
+    double speed;
+    int64_t pts = INT64_MIN + 1;
+    static int64_t last_time = -1;
+    static int qp_histogram[52];
+    int hours, mins, secs, us;
+    int ret;
+    float t;
+
+    if (!print_stats && !is_last_report && !progress_avio)
+        return;
+
+    if (!is_last_report) {
+        if (last_time == -1) {
+            last_time = cur_time;
+            return;
+        }
+        if ((cur_time - last_time) < 500000)
+            return;
+        last_time = cur_time;
+    }
+
+    t = (cur_time-timer_start) / 1000000.0;
+
+
+    oc = output_files[0]->ctx;
+
+    total_size = avio_size(oc->pb);
+    if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
+        total_size = avio_tell(oc->pb);
+
+    buf[0] = '\0';
+    vid = 0;
+    av_bprint_init(&buf_script, 0, 1);
+    for (i = 0; i < nb_output_streams; i++) {
+        float q = -1;
+        ost = output_streams[i];
+        enc = ost->enc_ctx;
+        if (!ost->stream_copy)
+            q = ost->quality / (float) FF_QP2LAMBDA;
+
+        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
+            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
+            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
+                       ost->file_index, ost->index, q);
+        }
+        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
+            float fps;
+
+            frame_number = ost->frame_number;
+            fps = t > 1 ? frame_number / t : 0;
+            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
+                     frame_number, fps < 9.95, fps, q);
+            av_bprintf(&buf_script, "frame=%d\n", frame_number);
+            av_bprintf(&buf_script, "fps=%.1f\n", fps);
+            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
+                       ost->file_index, ost->index, q);
+            if (is_last_report)
+                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
+            if (qp_hist) {
+                int j;
+                int qp = lrintf(q);
+                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
+                    qp_histogram[qp]++;
+                for (j = 0; j < 32; j++)
+                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", av_log2(qp_histogram[j] + 1));
+            }
+
+            if ((enc->flags & AV_CODEC_FLAG_PSNR) && (ost->pict_type != AV_PICTURE_TYPE_NONE || is_last_report)) {
+                int j;
+                double error, error_sum = 0;
+                double scale, scale_sum = 0;
+                double p;
+                char type[3] = { 'Y','U','V' };
+                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
+                for (j = 0; j < 3; j++) {
+                    if (is_last_report) {
+                        error = enc->error[j];
+                        scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
+                    } else {
+                        error = ost->error[j];
+                        scale = enc->width * enc->height * 255.0 * 255.0;
+                    }
+                    if (j)
+                        scale /= 4;
+                    error_sum += error;
+                    scale_sum += scale;
+                    p = psnr(error / scale);
+                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
+                    av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
+                               ost->file_index, ost->index, type[j] | 32, p);
+                }
+                p = psnr(error_sum / scale_sum);
+                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
+                av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
+                           ost->file_index, ost->index, p);
+            }
+            vid = 1;
+        }
+        /* compute min output value */
+        if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
+            pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
+                                          ost->st->time_base, AV_TIME_BASE_Q));
+        if (is_last_report)
+            nb_frames_drop += ost->last_dropped;
+    }
+
+    secs = FFABS(pts) / AV_TIME_BASE;
+    us = FFABS(pts) % AV_TIME_BASE;
+    mins = secs / 60;
+    secs %= 60;
+    hours = mins / 60;
+    mins %= 60;
+
+    bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
+    speed = t != 0.0 ? (double)pts / AV_TIME_BASE / t : -1;
+
+    if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+                                 "size=N/A time=");
+    else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+                                 "size=%8.0fkB time=", total_size / 1024.0);
+    if (pts < 0)
+        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
+    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
+             "%02d:%02d:%02d.%02d ", hours, mins, secs,
+             (100 * us) / AV_TIME_BASE);
+
+    if (bitrate < 0) {
+        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
+        av_bprintf(&buf_script, "bitrate=N/A\n");
+    }else{
+        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
+        av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
+    }
+
+    if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
+    else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
+    av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
+    av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
+               hours, mins, secs, us);
+
+    if (nb_frames_dup || nb_frames_drop)
+        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
+                nb_frames_dup, nb_frames_drop);
+    av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
+    av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
+
+    if (speed < 0) {
+        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=N/A");
+        av_bprintf(&buf_script, "speed=N/A\n");
+    } else {
+        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf)," speed=%4.3gx", speed);
+        av_bprintf(&buf_script, "speed=%4.3gx\n", speed);
+    }
+
+    if (print_stats || is_last_report) {
+        const char end = is_last_report ? '\n' : '\r';
+        if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
+            fprintf(stderr, "%s    %c", buf, end);
+        } else
+            av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
+
+    fflush(stderr);
+    }
+
+    if (progress_avio) {
+        av_bprintf(&buf_script, "progress=%s\n",
+                   is_last_report ? "end" : "continue");
+        avio_write(progress_avio, buf_script.str,
+                   FFMIN(buf_script.len, buf_script.size - 1));
+        avio_flush(progress_avio);
+        av_bprint_finalize(&buf_script, NULL);
+        if (is_last_report) {
+            if ((ret = avio_closep(&progress_avio)) < 0)
+                av_log(NULL, AV_LOG_ERROR,
+                       "Error closing progress log, loss of information possible: %s\n", av_err2str(ret));
+        }
+    }
+
+    if (is_last_report)
+        print_final_stats(total_size);
+}
+
+static void flush_encoders(void)
+{
+    int i, ret;
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream   *ost = output_streams[i];
+        AVCodecContext *enc = ost->enc_ctx;
+        OutputFile      *of = output_files[ost->file_index];
+
+        if (!ost->encoding_needed)
+            continue;
+
+        // Try to enable encoding with no input frames.
+        // Maybe we should just let encoding fail instead.
+        if (!ost->initialized) {
+            FilterGraph *fg = ost->filter->graph;
+            char error[1024] = "";
+
+            av_log(NULL, AV_LOG_WARNING,
+                   "Finishing stream %d:%d without any data written to it.\n",
+                   ost->file_index, ost->st->index);
+
+            if (ost->filter && !fg->graph) {
+                int x;
+                for (x = 0; x < fg->nb_inputs; x++) {
+                    InputFilter *ifilter = fg->inputs[x];
+                    if (ifilter->format < 0) {
+                        AVCodecParameters *par = ifilter->ist->st->codecpar;
+                        // We never got any input. Set a fake format, which will
+                        // come from libavformat.
+                        ifilter->format                 = par->format;
+                        ifilter->sample_rate            = par->sample_rate;
+                        ifilter->channels               = par->channels;
+                        ifilter->channel_layout         = par->channel_layout;
+                        ifilter->width                  = par->width;
+                        ifilter->height                 = par->height;
+                        ifilter->sample_aspect_ratio    = par->sample_aspect_ratio;
+                    }
+                }
+
+                if (!ifilter_has_all_input_formats(fg))
+                    continue;
+
+                ret = configure_filtergraph(fg);
+                if (ret < 0) {
+                    av_log(NULL, AV_LOG_ERROR, "Error configuring filter graph\n");
+                    exit_program(1);
+                }
+
+                finish_output_stream(ost);
+            }
+
+            ret = init_output_stream(ost, error, sizeof(error));
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
+                       ost->file_index, ost->index, error);
+                exit_program(1);
+            }
+        }
+
+        if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
+            continue;
+#if FF_API_LAVF_FMT_RAWPICTURE
+        if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
+            continue;
+#endif
+
+        if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
+            continue;
+
+        for (;;) {
+            const char *desc = NULL;
+            AVPacket pkt;
+            int pkt_size;
+
+            switch (enc->codec_type) {
+            case AVMEDIA_TYPE_AUDIO:
+                desc   = "audio";
+                break;
+            case AVMEDIA_TYPE_VIDEO:
+                desc   = "video";
+                break;
+            default:
+                av_assert0(0);
+            }
+
+                av_init_packet(&pkt);
+                pkt.data = NULL;
+                pkt.size = 0;
+
+                update_benchmark(NULL);
+
+                while ((ret = avcodec_receive_packet(enc, &pkt)) == AVERROR(EAGAIN)) {
+                    ret = avcodec_send_frame(enc, NULL);
+                    if (ret < 0) {
+                        av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
+                               desc,
+                               av_err2str(ret));
+                        exit_program(1);
+                    }
+                }
+
+                update_benchmark("flush_%s %d.%d", desc, ost->file_index, ost->index);
+                if (ret < 0 && ret != AVERROR_EOF) {
+                    av_log(NULL, AV_LOG_FATAL, "%s encoding failed: %s\n",
+                           desc,
+                           av_err2str(ret));
+                    exit_program(1);
+                }
+                if (ost->logfile && enc->stats_out) {
+                    fprintf(ost->logfile, "%s", enc->stats_out);
+                }
+                if (ret == AVERROR_EOF) {
+                    output_packet(of, &pkt, ost, 1);
+                    break;
+                }
+                if (ost->finished & MUXER_FINISHED) {
+                    av_packet_unref(&pkt);
+                    continue;
+                }
+                av_packet_rescale_ts(&pkt, enc->time_base, ost->mux_timebase);
+                pkt_size = pkt.size;
+                output_packet(of, &pkt, ost, 0);
+                if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
+                    do_video_stats(ost, pkt_size);
+                }
+        }
+    }
+}
+
+/*
+ * Check whether a packet from ist should be written into ost at this time
+ */
+static int check_output_constraints(InputStream *ist, OutputStream *ost)
+{
+    OutputFile *of = output_files[ost->file_index];
+    int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
+
+    if (ost->source_index != ist_index)
+        return 0;
+
+    if (ost->finished)
+        return 0;
+
+    if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
+        return 0;
+
+    return 1;
+}
+
+static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
+{
+    OutputFile *of = output_files[ost->file_index];
+    InputFile   *f = input_files [ist->file_index];
+    int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
+    int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
+    AVPicture pict;
+    AVPacket opkt;
+
+    av_init_packet(&opkt);
+
+    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
+        !ost->copy_initial_nonkeyframes)
+        return;
+
+    if (!ost->frame_number && !ost->copy_prior_start) {
+        int64_t comp_start = start_time;
+        if (copy_ts && f->start_time != AV_NOPTS_VALUE)
+            comp_start = FFMAX(start_time, f->start_time + f->ts_offset);
+        if (pkt->pts == AV_NOPTS_VALUE ?
+            ist->pts < comp_start :
+            pkt->pts < av_rescale_q(comp_start, AV_TIME_BASE_Q, ist->st->time_base))
+            return;
+    }
+
+    if (of->recording_time != INT64_MAX &&
+        ist->pts >= of->recording_time + start_time) {
+        close_output_stream(ost);
+        return;
+    }
+
+    if (f->recording_time != INT64_MAX) {
+        start_time = f->ctx->start_time;
+        if (f->start_time != AV_NOPTS_VALUE && copy_ts)
+            start_time += f->start_time;
+        if (ist->pts >= f->recording_time + start_time) {
+            close_output_stream(ost);
+            return;
+        }
+    }
+
+    /* force the input stream PTS */
+    if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
+        ost->sync_opts++;
+
+    if (pkt->pts != AV_NOPTS_VALUE)
+        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
+    else
+        opkt.pts = AV_NOPTS_VALUE;
+
+    if (pkt->dts == AV_NOPTS_VALUE)
+        opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->mux_timebase);
+    else
+        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
+    opkt.dts -= ost_tb_start_time;
+
+    if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
+        int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
+        if(!duration)
+            duration = ist->dec_ctx->frame_size;
+        opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
+                                               (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
+                                               ost->mux_timebase) - ost_tb_start_time;
+    }
+
+    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
+
+    opkt.flags    = pkt->flags;
+    // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
+    if (  ost->st->codecpar->codec_id != AV_CODEC_ID_H264
+       && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG1VIDEO
+       && ost->st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO
+       && ost->st->codecpar->codec_id != AV_CODEC_ID_VC1
+       ) {
+        int ret = av_parser_change(ost->parser, ost->parser_avctx,
+                             &opkt.data, &opkt.size,
+                             pkt->data, pkt->size,
+                             pkt->flags & AV_PKT_FLAG_KEY);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_FATAL, "av_parser_change failed: %s\n",
+                   av_err2str(ret));
+            exit_program(1);
+        }
+        if (ret) {
+            opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
+            if (!opkt.buf)
+                exit_program(1);
+        }
+    } else {
+        opkt.data = pkt->data;
+        opkt.size = pkt->size;
+    }
+    av_copy_packet_side_data(&opkt, pkt);
+
+#if FF_API_LAVF_FMT_RAWPICTURE
+    if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
+        ost->st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO &&
+        (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
+        /* store AVPicture in AVPacket, as expected by the output format */
+        int ret = avpicture_fill(&pict, opkt.data, ost->st->codecpar->format, ost->st->codecpar->width, ost->st->codecpar->height);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_FATAL, "avpicture_fill failed: %s\n",
+                   av_err2str(ret));
+            exit_program(1);
+        }
+        opkt.data = (uint8_t *)&pict;
+        opkt.size = sizeof(AVPicture);
+        opkt.flags |= AV_PKT_FLAG_KEY;
+    }
+#endif
+
+    output_packet(of, &opkt, ost, 0);
+}
+
+int guess_input_channel_layout(InputStream *ist)
+{
+    AVCodecContext *dec = ist->dec_ctx;
+
+    if (!dec->channel_layout) {
+        char layout_name[256];
+
+        if (dec->channels > ist->guess_layout_max)
+            return 0;
+        dec->channel_layout = av_get_default_channel_layout(dec->channels);
+        if (!dec->channel_layout)
+            return 0;
+        av_get_channel_layout_string(layout_name, sizeof(layout_name),
+                                     dec->channels, dec->channel_layout);
+        av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
+               "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
+    }
+    return 1;
+}
+
+static void check_decode_result(InputStream *ist, int *got_output, int ret)
+{
+    if (*got_output || ret<0)
+        decode_error_stat[ret<0] ++;
+
+    if (ret < 0 && exit_on_error)
+        exit_program(1);
+
+    if (exit_on_error && *got_output && ist) {
+        if (ist->decoded_frame->decode_error_flags || (ist->decoded_frame->flags & AV_FRAME_FLAG_CORRUPT)) {
+            av_log(NULL, AV_LOG_FATAL, "%s: corrupt decoded frame in stream %d\n", input_files[ist->file_index]->ctx->filename, ist->st->index);
+            exit_program(1);
+        }
+    }
+}
+
+// Filters can be configured only if the formats of all inputs are known.
+static int ifilter_has_all_input_formats(FilterGraph *fg)
+{
+    int i;
+    for (i = 0; i < fg->nb_inputs; i++) {
+        if (fg->inputs[i]->format < 0 && (fg->inputs[i]->type == AVMEDIA_TYPE_AUDIO ||
+                                          fg->inputs[i]->type == AVMEDIA_TYPE_VIDEO))
+            return 0;
+    }
+    return 1;
+}
+
+static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
+{
+    FilterGraph *fg = ifilter->graph;
+    int need_reinit, ret, i;
+
+    /* determine if the parameters for this input changed */
+    need_reinit = ifilter->format != frame->format;
+    if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
+        (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
+        need_reinit = 1;
+
+    switch (ifilter->ist->st->codecpar->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        need_reinit |= ifilter->sample_rate    != frame->sample_rate ||
+                       ifilter->channels       != frame->channels ||
+                       ifilter->channel_layout != frame->channel_layout;
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        need_reinit |= ifilter->width  != frame->width ||
+                       ifilter->height != frame->height;
+        break;
+    }
+
+    if (need_reinit) {
+        ret = ifilter_parameters_from_frame(ifilter, frame);
+        if (ret < 0)
+            return ret;
+    }
+
+    /* (re)init the graph if possible, otherwise buffer the frame and return */
+    if (need_reinit || !fg->graph) {
+        for (i = 0; i < fg->nb_inputs; i++) {
+            if (!ifilter_has_all_input_formats(fg)) {
+                AVFrame *tmp = av_frame_clone(frame);
+                if (!tmp)
+                    return AVERROR(ENOMEM);
+                av_frame_unref(frame);
+
+                if (!av_fifo_space(ifilter->frame_queue)) {
+                    ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
+                    if (ret < 0) {
+                        av_frame_free(&tmp);
+                        return ret;
+                    }
+                }
+                av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
+                return 0;
+            }
+        }
+
+        ret = reap_filters(1);
+        if (ret < 0 && ret != AVERROR_EOF) {
+            char errbuf[128];
+            av_strerror(ret, errbuf, sizeof(errbuf));
+
+            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
+            return ret;
+        }
+
+        ret = configure_filtergraph(fg);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
+            return ret;
+        }
+    }
+
+    ret = av_buffersrc_add_frame_flags(ifilter->filter, frame, AV_BUFFERSRC_FLAG_PUSH);
+    if (ret < 0) {
+        if (ret != AVERROR_EOF)
+            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", av_err2str(ret));
+        return ret;
+    }
+
+    return 0;
+}
+
+static int ifilter_send_eof(InputFilter *ifilter, int64_t pts)
+{
+    int i, j, ret;
+
+    ifilter->eof = 1;
+
+    if (ifilter->filter) {
+        ret = av_buffersrc_close(ifilter->filter, pts, AV_BUFFERSRC_FLAG_PUSH);
+        if (ret < 0)
+            return ret;
+    } else {
+        // the filtergraph was never configured
+        FilterGraph *fg = ifilter->graph;
+        for (i = 0; i < fg->nb_inputs; i++)
+            if (!fg->inputs[i]->eof)
+                break;
+        if (i == fg->nb_inputs) {
+            // All the input streams have finished without the filtergraph
+            // ever being configured.
+            // Mark the output streams as finished.
+            for (j = 0; j < fg->nb_outputs; j++)
+                finish_output_stream(fg->outputs[j]->ost);
+        }
+    }
+
+    return 0;
+}
+
+// This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
+// There is the following difference: if you got a frame, you must call
+// it again with pkt=NULL. pkt==NULL is treated differently from pkt->size==0
+// (pkt==NULL means get more output, pkt->size==0 is a flush/drain packet)
+static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
+{
+    int ret;
+
+    *got_frame = 0;
+
+    if (pkt) {
+        ret = avcodec_send_packet(avctx, pkt);
+        // In particular, we don't expect AVERROR(EAGAIN), because we read all
+        // decoded frames with avcodec_receive_frame() until done.
+        if (ret < 0 && ret != AVERROR_EOF)
+            return ret;
+    }
+
+    ret = avcodec_receive_frame(avctx, frame);
+    if (ret < 0 && ret != AVERROR(EAGAIN))
+        return ret;
+    if (ret >= 0)
+        *got_frame = 1;
+
+    return 0;
+}
+
+static int send_frame_to_filters(InputStream *ist, AVFrame *decoded_frame)
+{
+    int i, ret;
+    AVFrame *f;
+
+    av_assert1(ist->nb_filters > 0); /* ensure ret is initialized */
+    for (i = 0; i < ist->nb_filters; i++) {
+        if (i < ist->nb_filters - 1) {
+            f = ist->filter_frame;
+            ret = av_frame_ref(f, decoded_frame);
+            if (ret < 0)
+                break;
+        } else
+            f = decoded_frame;
+        ret = ifilter_send_frame(ist->filters[i], f);
+        if (ret == AVERROR_EOF)
+            ret = 0; /* ignore */
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Failed to inject frame into filter network: %s\n", av_err2str(ret));
+            break;
+        }
+    }
+    return ret;
+}
+
+static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
+                        int *decode_failed)
+{
+    AVFrame *decoded_frame;
+    AVCodecContext *avctx = ist->dec_ctx;
+    int ret, err = 0;
+    AVRational decoded_frame_tb;
+
+    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
+        return AVERROR(ENOMEM);
+    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
+        return AVERROR(ENOMEM);
+    decoded_frame = ist->decoded_frame;
+
+    update_benchmark(NULL);
+    ret = decode(avctx, decoded_frame, got_output, pkt);
+    update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
+    if (ret < 0)
+        *decode_failed = 1;
+
+    if (ret >= 0 && avctx->sample_rate <= 0) {
+        av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
+        ret = AVERROR_INVALIDDATA;
+    }
+
+    if (ret != AVERROR_EOF)
+        check_decode_result(ist, got_output, ret);
+
+    if (!*got_output || ret < 0)
+        return ret;
+
+    ist->samples_decoded += decoded_frame->nb_samples;
+    ist->frames_decoded++;
+
+#if 1
+    /* increment next_dts to use for the case where the input stream does not
+       have timestamps or there are multiple frames in the packet */
+    ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
+                     avctx->sample_rate;
+    ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
+                     avctx->sample_rate;
+#endif
+
+    if (decoded_frame->pts != AV_NOPTS_VALUE) {
+        decoded_frame_tb   = ist->st->time_base;
+    } else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
+        decoded_frame->pts = pkt->pts;
+        decoded_frame_tb   = ist->st->time_base;
+    }else {
+        decoded_frame->pts = ist->dts;
+        decoded_frame_tb   = AV_TIME_BASE_Q;
+    }
+    if (decoded_frame->pts != AV_NOPTS_VALUE)
+        decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
+                                              (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
+                                              (AVRational){1, avctx->sample_rate});
+    ist->nb_samples = decoded_frame->nb_samples;
+    err = send_frame_to_filters(ist, decoded_frame);
+
+    av_frame_unref(ist->filter_frame);
+    av_frame_unref(decoded_frame);
+    return err < 0 ? err : ret;
+}
+
+static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *duration_pts, int eof,
+                        int *decode_failed)
+{
+    AVFrame *decoded_frame;
+    int i, ret = 0, err = 0;
+    int64_t best_effort_timestamp;
+    int64_t dts = AV_NOPTS_VALUE;
+    AVPacket avpkt;
+
+    // With fate-indeo3-2, we're getting 0-sized packets before EOF for some
+    // reason. This seems like a semi-critical bug. Don't trigger EOF, and
+    // skip the packet.
+    if (!eof && pkt && pkt->size == 0)
+        return 0;
+
+    if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
+        return AVERROR(ENOMEM);
+    if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
+        return AVERROR(ENOMEM);
+    decoded_frame = ist->decoded_frame;
+    if (ist->dts != AV_NOPTS_VALUE)
+        dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
+    if (pkt) {
+        avpkt = *pkt;
+        avpkt.dts = dts; // ffmpeg.c probably shouldn't do this
+    }
+
+    // The old code used to set dts on the drain packet, which does not work
+    // with the new API anymore.
+    if (eof) {
+        void *new = av_realloc_array(ist->dts_buffer, ist->nb_dts_buffer + 1, sizeof(ist->dts_buffer[0]));
+        if (!new)
+            return AVERROR(ENOMEM);
+        ist->dts_buffer = new;
+        ist->dts_buffer[ist->nb_dts_buffer++] = dts;
+    }
+
+    update_benchmark(NULL);
+    ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt ? &avpkt : NULL);
+    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
+    if (ret < 0)
+        *decode_failed = 1;
+
+    // The following line may be required in some cases where there is no parser
+    // or the parser does not has_b_frames correctly
+    if (ist->st->codecpar->video_delay < ist->dec_ctx->has_b_frames) {
+        if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
+            ist->st->codecpar->video_delay = ist->dec_ctx->has_b_frames;
+        } else
+            av_log(ist->dec_ctx, AV_LOG_WARNING,
+                   "video_delay is larger in decoder than demuxer %d > %d.\n"
+                   "If you want to help, upload a sample "
+                   "of this file to ftp://upload.ffmpeg.org/incoming/ "
+                   "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n",
+                   ist->dec_ctx->has_b_frames,
+                   ist->st->codecpar->video_delay);
+    }
+
+    if (ret != AVERROR_EOF)
+        check_decode_result(ist, got_output, ret);
+
+    if (*got_output && ret >= 0) {
+        if (ist->dec_ctx->width  != decoded_frame->width ||
+            ist->dec_ctx->height != decoded_frame->height ||
+            ist->dec_ctx->pix_fmt != decoded_frame->format) {
+            av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
+                decoded_frame->width,
+                decoded_frame->height,
+                decoded_frame->format,
+                ist->dec_ctx->width,
+                ist->dec_ctx->height,
+                ist->dec_ctx->pix_fmt);
+        }
+    }
+
+    if (!*got_output || ret < 0)
+        return ret;
+
+    if(ist->top_field_first>=0)
+        decoded_frame->top_field_first = ist->top_field_first;
+
+    ist->frames_decoded++;
+
+    if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
+        err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
+        if (err < 0)
+            goto fail;
+    }
+    ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
+
+    best_effort_timestamp= decoded_frame->best_effort_timestamp;
+    *duration_pts = decoded_frame->pkt_duration;
+
+    if (ist->framerate.num)
+        best_effort_timestamp = ist->cfr_next_pts++;
+
+    if (eof && best_effort_timestamp == AV_NOPTS_VALUE && ist->nb_dts_buffer > 0) {
+        best_effort_timestamp = ist->dts_buffer[0];
+
+        for (i = 0; i < ist->nb_dts_buffer - 1; i++)
+            ist->dts_buffer[i] = ist->dts_buffer[i + 1];
+        ist->nb_dts_buffer--;
+    }
+
+    if(best_effort_timestamp != AV_NOPTS_VALUE) {
+        int64_t ts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
+
+        if (ts != AV_NOPTS_VALUE)
+            ist->next_pts = ist->pts = ts;
+    }
+
+    if (debug_ts) {
+        av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
+               "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
+               ist->st->index, av_ts2str(decoded_frame->pts),
+               av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
+               best_effort_timestamp,
+               av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
+               decoded_frame->key_frame, decoded_frame->pict_type,
+               ist->st->time_base.num, ist->st->time_base.den);
+    }
+
+    if (ist->st->sample_aspect_ratio.num)
+        decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
+
+    err = send_frame_to_filters(ist, decoded_frame);
+
+fail:
+    av_frame_unref(ist->filter_frame);
+    av_frame_unref(decoded_frame);
+    return err < 0 ? err : ret;
+}
+
+static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
+                               int *decode_failed)
+{
+    AVSubtitle subtitle;
+    int free_sub = 1;
+    int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
+                                          &subtitle, got_output, pkt);
+
+    check_decode_result(NULL, got_output, ret);
+
+    if (ret < 0 || !*got_output) {
+        *decode_failed = 1;
+        if (!pkt->size)
+            sub2video_flush(ist);
+        return ret;
+    }
+
+    if (ist->fix_sub_duration) {
+        int end = 1;
+        if (ist->prev_sub.got_output) {
+            end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
+                             1000, AV_TIME_BASE);
+            if (end < ist->prev_sub.subtitle.end_display_time) {
+                av_log(ist->dec_ctx, AV_LOG_DEBUG,
+                       "Subtitle duration reduced from %"PRId32" to %d%s\n",
+                       ist->prev_sub.subtitle.end_display_time, end,
+                       end <= 0 ? ", dropping it" : "");
+                ist->prev_sub.subtitle.end_display_time = end;
+            }
+        }
+        FFSWAP(int,        *got_output, ist->prev_sub.got_output);
+        FFSWAP(int,        ret,         ist->prev_sub.ret);
+        FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
+        if (end <= 0)
+            goto out;
+    }
+
+    if (!*got_output)
+        return ret;
+
+    if (ist->sub2video.frame) {
+        sub2video_update(ist, &subtitle);
+    } else if (ist->nb_filters) {
+        if (!ist->sub2video.sub_queue)
+            ist->sub2video.sub_queue = av_fifo_alloc(8 * sizeof(AVSubtitle));
+        if (!ist->sub2video.sub_queue)
+            exit_program(1);
+        if (!av_fifo_space(ist->sub2video.sub_queue)) {
+            ret = av_fifo_realloc2(ist->sub2video.sub_queue, 2 * av_fifo_size(ist->sub2video.sub_queue));
+            if (ret < 0)
+                exit_program(1);
+        }
+        av_fifo_generic_write(ist->sub2video.sub_queue, &subtitle, sizeof(subtitle), NULL);
+        free_sub = 0;
+    }
+
+    if (!subtitle.num_rects)
+        goto out;
+
+    ist->frames_decoded++;
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+
+        if (!check_output_constraints(ist, ost) || !ost->encoding_needed
+            || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
+            continue;
+
+        do_subtitle_out(output_files[ost->file_index], ost, &subtitle);
+    }
+
+out:
+    if (free_sub)
+        avsubtitle_free(&subtitle);
+    return ret;
+}
+
+static int send_filter_eof(InputStream *ist)
+{
+    int i, ret;
+    /* TODO keep pts also in stream time base to avoid converting back */
+    int64_t pts = av_rescale_q_rnd(ist->pts, AV_TIME_BASE_Q, ist->st->time_base,
+                                   AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);
+
+    for (i = 0; i < ist->nb_filters; i++) {
+        ret = ifilter_send_eof(ist->filters[i], pts);
+        if (ret < 0)
+            return ret;
+    }
+    return 0;
+}
+
+/* pkt = NULL means EOF (needed to flush decoder buffers) */
+static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
+{
+    int ret = 0, i;
+    int repeating = 0;
+    int eof_reached = 0;
+
+    AVPacket avpkt;
+    if (!ist->saw_first_ts) {
+        ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
+        ist->pts = 0;
+        if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
+            ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
+            ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
+        }
+        ist->saw_first_ts = 1;
+    }
+
+    if (ist->next_dts == AV_NOPTS_VALUE)
+        ist->next_dts = ist->dts;
+    if (ist->next_pts == AV_NOPTS_VALUE)
+        ist->next_pts = ist->pts;
+
+    if (!pkt) {
+        /* EOF handling */
+        av_init_packet(&avpkt);
+        avpkt.data = NULL;
+        avpkt.size = 0;
+    } else {
+        avpkt = *pkt;
+    }
+
+    if (pkt && pkt->dts != AV_NOPTS_VALUE) {
+        ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
+        if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
+            ist->next_pts = ist->pts = ist->dts;
+    }
+
+    // while we have more to decode or while the decoder did output something on EOF
+    while (ist->decoding_needed) {
+        int64_t duration_dts = 0;
+        int64_t duration_pts = 0;
+        int got_output = 0;
+        int decode_failed = 0;
+
+        ist->pts = ist->next_pts;
+        ist->dts = ist->next_dts;
+
+        switch (ist->dec_ctx->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            ret = decode_audio    (ist, repeating ? NULL : &avpkt, &got_output,
+                                   &decode_failed);
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            ret = decode_video    (ist, repeating ? NULL : &avpkt, &got_output, &duration_pts, !pkt,
+                                   &decode_failed);
+            if (!repeating || !pkt || got_output) {
+                if (pkt && pkt->duration) {
+                    duration_dts = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
+                } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
+                    int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
+                    duration_dts = ((int64_t)AV_TIME_BASE *
+                                    ist->dec_ctx->framerate.den * ticks) /
+                                    ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
+                }
+
+                if(ist->dts != AV_NOPTS_VALUE && duration_dts) {
+                    ist->next_dts += duration_dts;
+                }else
+                    ist->next_dts = AV_NOPTS_VALUE;
+            }
+
+            if (got_output)
+                ist->next_pts += av_rescale_q(duration_pts, ist->st->time_base, AV_TIME_BASE_Q);
+            break;
+        case AVMEDIA_TYPE_SUBTITLE:
+            if (repeating)
+                break;
+            ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
+            if (!pkt && ret >= 0)
+                ret = AVERROR_EOF;
+            break;
+        default:
+            return -1;
+        }
+
+        if (ret == AVERROR_EOF) {
+            eof_reached = 1;
+            break;
+        }
+
+        if (ret < 0) {
+            if (decode_failed) {
+                av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
+                       ist->file_index, ist->st->index, av_err2str(ret));
+            } else {
+                av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
+                       "data for stream #%d:%d\n", ist->file_index, ist->st->index);
+            }
+            if (!decode_failed || exit_on_error)
+                exit_program(1);
+            break;
+        }
+
+        if (got_output)
+            ist->got_output = 1;
+
+        if (!got_output)
+            break;
+
+        // During draining, we might get multiple output frames in this loop.
+        // ffmpeg.c does not drain the filter chain on configuration changes,
+        // which means if we send multiple frames at once to the filters, and
+        // one of those frames changes configuration, the buffered frames will
+        // be lost. This can upset certain FATE tests.
+        // Decode only 1 frame per call on EOF to appease these FATE tests.
+        // The ideal solution would be to rewrite decoding to use the new
+        // decoding API in a better way.
+        if (!pkt)
+            break;
+
+        repeating = 1;
+    }
+
+    /* after flushing, send an EOF on all the filter inputs attached to the stream */
+    /* except when looping we need to flush but not to send an EOF */
+    if (!pkt && ist->decoding_needed && eof_reached && !no_eof) {
+        int ret = send_filter_eof(ist);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
+            exit_program(1);
+        }
+    }
+
+    /* handle stream copy */
+    if (!ist->decoding_needed) {
+        ist->dts = ist->next_dts;
+        switch (ist->dec_ctx->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
+                             ist->dec_ctx->sample_rate;
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            if (ist->framerate.num) {
+                // TODO: Remove work-around for c99-to-c89 issue 7
+                AVRational time_base_q = AV_TIME_BASE_Q;
+                int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
+                ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
+            } else if (pkt->duration) {
+                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
+            } else if(ist->dec_ctx->framerate.num != 0) {
+                int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
+                ist->next_dts += ((int64_t)AV_TIME_BASE *
+                                  ist->dec_ctx->framerate.den * ticks) /
+                                  ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
+            }
+            break;
+        }
+        ist->pts = ist->dts;
+        ist->next_pts = ist->next_dts;
+    }
+    for (i = 0; pkt && i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+
+        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
+            continue;
+
+        do_streamcopy(ist, ost, pkt);
+    }
+
+    return !eof_reached;
+}
+
+static void print_sdp(void)
+{
+    char sdp[16384];
+    int i;
+    int j;
+    AVIOContext *sdp_pb;
+    AVFormatContext **avc;
+
+    for (i = 0; i < nb_output_files; i++) {
+        if (!output_files[i]->header_written)
+            return;
+    }
+
+    avc = av_malloc_array(nb_output_files, sizeof(*avc));
+    if (!avc)
+        exit_program(1);
+    for (i = 0, j = 0; i < nb_output_files; i++) {
+        if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
+            avc[j] = output_files[i]->ctx;
+            j++;
+        }
+    }
+
+    if (!j)
+        goto fail;
+
+    av_sdp_create(avc, j, sdp, sizeof(sdp));
+
+    if (!sdp_filename) {
+        printf("SDP:\n%s\n", sdp);
+        fflush(stdout);
+    } else {
+        if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
+        } else {
+            avio_printf(sdp_pb, "SDP:\n%s", sdp);
+            avio_closep(&sdp_pb);
+            av_freep(&sdp_filename);
+        }
+    }
+
+fail:
+    av_freep(&avc);
+}
+
+static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
+{
+    int i;
+    for (i = 0; hwaccels[i].name; i++)
+        if (hwaccels[i].pix_fmt == pix_fmt)
+            return &hwaccels[i];
+    return NULL;
+}
+
+static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
+{
+    InputStream *ist = s->opaque;
+    const enum AVPixelFormat *p;
+    int ret;
+
+    for (p = pix_fmts; *p != -1; p++) {
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
+        const HWAccel *hwaccel;
+
+        if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
+            break;
+
+        hwaccel = get_hwaccel(*p);
+        if (!hwaccel ||
+            (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
+            (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
+            continue;
+
+        ret = hwaccel->init(s);
+        if (ret < 0) {
+            if (ist->hwaccel_id == hwaccel->id) {
+                av_log(NULL, AV_LOG_FATAL,
+                       "%s hwaccel requested for input stream #%d:%d, "
+                       "but cannot be initialized.\n", hwaccel->name,
+                       ist->file_index, ist->st->index);
+                return AV_PIX_FMT_NONE;
+            }
+            continue;
+        }
+
+        if (ist->hw_frames_ctx) {
+            s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
+            if (!s->hw_frames_ctx)
+                return AV_PIX_FMT_NONE;
+        }
+
+        ist->active_hwaccel_id = hwaccel->id;
+        ist->hwaccel_pix_fmt   = *p;
+        break;
+    }
+
+    return *p;
+}
+
+static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
+{
+    InputStream *ist = s->opaque;
+
+    if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
+        return ist->hwaccel_get_buffer(s, frame, flags);
+
+    return avcodec_default_get_buffer2(s, frame, flags);
+}
+
+static int init_input_stream(int ist_index, char *error, int error_len)
+{
+    int ret;
+    InputStream *ist = input_streams[ist_index];
+
+    if (ist->decoding_needed) {
+        AVCodec *codec = ist->dec;
+        if (!codec) {
+            snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
+                    avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
+            return AVERROR(EINVAL);
+        }
+
+        ist->dec_ctx->opaque                = ist;
+        ist->dec_ctx->get_format            = get_format;
+        ist->dec_ctx->get_buffer2           = get_buffer;
+        ist->dec_ctx->thread_safe_callbacks = 1;
+
+        av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
+        if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
+           (ist->decoding_needed & DECODING_FOR_OST)) {
+            av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
+            if (ist->decoding_needed & DECODING_FOR_FILTER)
+                av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
+        }
+
+        av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);
+
+        /* Useful for subtitles retiming by lavf (FIXME), skipping samples in
+         * audio, and video decoders such as cuvid or mediacodec */
+        av_codec_set_pkt_timebase(ist->dec_ctx, ist->st->time_base);
+
+        if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
+            av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
+
+        ret = hw_device_setup_for_decode(ist);
+        if (ret < 0) {
+            snprintf(error, error_len, "Device setup failed for "
+                     "decoder on input stream #%d:%d : %s",
+                     ist->file_index, ist->st->index, av_err2str(ret));
+            return ret;
+        }
+
+        if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
+            if (ret == AVERROR_EXPERIMENTAL)
+                abort_codec_experimental(codec, 0);
+
+            snprintf(error, error_len,
+                     "Error while opening decoder for input stream "
+                     "#%d:%d : %s",
+                     ist->file_index, ist->st->index, av_err2str(ret));
+            return ret;
+        }
+        assert_avoptions(ist->decoder_opts);
+    }
+
+    ist->next_pts = AV_NOPTS_VALUE;
+    ist->next_dts = AV_NOPTS_VALUE;
+
+    return 0;
+}
+
+static InputStream *get_input_stream(OutputStream *ost)
+{
+    if (ost->source_index >= 0)
+        return input_streams[ost->source_index];
+    return NULL;
+}
+
+static int compare_int64(const void *a, const void *b)
+{
+    return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
+}
+
+/* open the muxer when all the streams are initialized */
+static int check_init_output_file(OutputFile *of, int file_index)
+{
+    int ret, i;
+
+    for (i = 0; i < of->ctx->nb_streams; i++) {
+        OutputStream *ost = output_streams[of->ost_index + i];
+        if (!ost->initialized)
+            return 0;
+    }
+
+    of->ctx->interrupt_callback = int_cb;
+
+    ret = avformat_write_header(of->ctx, &of->opts);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR,
+               "Could not write header for output file #%d "
+               "(incorrect codec parameters ?): %s\n",
+               file_index, av_err2str(ret));
+        return ret;
+    }
+    //assert_avoptions(of->opts);
+    of->header_written = 1;
+
+    av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
+
+    if (sdp_filename || want_sdp)
+        print_sdp();
+
+    /* flush the muxing queues */
+    for (i = 0; i < of->ctx->nb_streams; i++) {
+        OutputStream *ost = output_streams[of->ost_index + i];
+
+        /* try to improve muxing time_base (only possible if nothing has been written yet) */
+        if (!av_fifo_size(ost->muxing_queue))
+            ost->mux_timebase = ost->st->time_base;
+
+        while (av_fifo_size(ost->muxing_queue)) {
+            AVPacket pkt;
+            av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
+            write_packet(of, &pkt, ost, 1);
+        }
+    }
+
+    return 0;
+}
+
+static int init_output_bsfs(OutputStream *ost)
+{
+    AVBSFContext *ctx;
+    int i, ret;
+
+    if (!ost->nb_bitstream_filters)
+        return 0;
+
+    for (i = 0; i < ost->nb_bitstream_filters; i++) {
+        ctx = ost->bsf_ctx[i];
+
+        ret = avcodec_parameters_copy(ctx->par_in,
+                                      i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
+        if (ret < 0)
+            return ret;
+
+        ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
+
+        ret = av_bsf_init(ctx);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
+                   ost->bsf_ctx[i]->filter->name);
+            return ret;
+        }
+    }
+
+    ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
+    ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
+    if (ret < 0)
+        return ret;
+
+    ost->st->time_base = ctx->time_base_out;
+
+    return 0;
+}
+
+static int init_output_stream_streamcopy(OutputStream *ost)
+{
+    OutputFile *of = output_files[ost->file_index];
+    InputStream *ist = get_input_stream(ost);
+    AVCodecParameters *par_dst = ost->st->codecpar;
+    AVCodecParameters *par_src = ost->ref_par;
+    AVRational sar;
+    int i, ret;
+    uint32_t codec_tag = par_dst->codec_tag;
+
+    av_assert0(ist && !ost->filter);
+
+    ret = avcodec_parameters_to_context(ost->enc_ctx, ist->st->codecpar);
+    if (ret >= 0)
+        ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL,
+               "Error setting up codec context options.\n");
+        return ret;
+    }
+    avcodec_parameters_from_context(par_src, ost->enc_ctx);
+
+    if (!codec_tag) {
+        unsigned int codec_tag_tmp;
+        if (!of->ctx->oformat->codec_tag ||
+            av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
+            !av_codec_get_tag2(of->ctx->oformat->codec_tag, par_src->codec_id, &codec_tag_tmp))
+            codec_tag = par_src->codec_tag;
+    }
+
+    ret = avcodec_parameters_copy(par_dst, par_src);
+    if (ret < 0)
+        return ret;
+
+    par_dst->codec_tag = codec_tag;
+
+    if (!ost->frame_rate.num)
+        ost->frame_rate = ist->framerate;
+    ost->st->avg_frame_rate = ost->frame_rate;
+
+    ret = avformat_transfer_internal_stream_timing_info(of->ctx->oformat, ost->st, ist->st, copy_tb);
+    if (ret < 0)
+        return ret;
+
+    // copy timebase while removing common factors
+    if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
+        ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
+
+    // copy estimated duration as a hint to the muxer
+    if (ost->st->duration <= 0 && ist->st->duration > 0)
+        ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
+
+    // copy disposition
+    ost->st->disposition = ist->st->disposition;
+
+    if (ist->st->nb_side_data) {
+        for (i = 0; i < ist->st->nb_side_data; i++) {
+            const AVPacketSideData *sd_src = &ist->st->side_data[i];
+            uint8_t *dst_data;
+
+            dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
+            if (!dst_data)
+                return AVERROR(ENOMEM);
+            memcpy(dst_data, sd_src->data, sd_src->size);
+        }
+    }
+
+    if (ost->rotate_overridden) {
+        uint8_t *sd = av_stream_new_side_data(ost->st, AV_PKT_DATA_DISPLAYMATRIX,
+                                              sizeof(int32_t) * 9);
+        if (sd)
+            av_display_rotation_set((int32_t *)sd, -ost->rotate_override_value);
+    }
+
+    ost->parser = av_parser_init(par_dst->codec_id);
+    ost->parser_avctx = avcodec_alloc_context3(NULL);
+    if (!ost->parser_avctx)
+        return AVERROR(ENOMEM);
+
+    switch (par_dst->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        if (audio_volume != 256) {
+            av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
+            exit_program(1);
+        }
+        if((par_dst->block_align == 1 || par_dst->block_align == 1152 || par_dst->block_align == 576) && par_dst->codec_id == AV_CODEC_ID_MP3)
+            par_dst->block_align= 0;
+        if(par_dst->codec_id == AV_CODEC_ID_AC3)
+            par_dst->block_align= 0;
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
+            sar =
+                av_mul_q(ost->frame_aspect_ratio,
+                         (AVRational){ par_dst->height, par_dst->width });
+            av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
+                   "with stream copy may produce invalid files\n");
+            }
+        else if (ist->st->sample_aspect_ratio.num)
+            sar = ist->st->sample_aspect_ratio;
+        else
+            sar = par_src->sample_aspect_ratio;
+        ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
+        ost->st->avg_frame_rate = ist->st->avg_frame_rate;
+        ost->st->r_frame_rate = ist->st->r_frame_rate;
+        break;
+    }
+
+    ost->mux_timebase = ist->st->time_base;
+
+    return 0;
+}
+
+static void set_encoder_id(OutputFile *of, OutputStream *ost)
+{
+    AVDictionaryEntry *e;
+
+    uint8_t *encoder_string;
+    int encoder_string_len;
+    int format_flags = 0;
+    int codec_flags = 0;
+
+    if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
+        return;
+
+    e = av_dict_get(of->opts, "fflags", NULL, 0);
+    if (e) {
+        const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
+        if (!o)
+            return;
+        av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
+    }
+    e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
+    if (e) {
+        const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
+        if (!o)
+            return;
+        av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
+    }
+
+    encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
+    encoder_string     = av_mallocz(encoder_string_len);
+    if (!encoder_string)
+        exit_program(1);
+
+    if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & AV_CODEC_FLAG_BITEXACT))
+        av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
+    else
+        av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
+    av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
+    av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
+                AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
+}
+
+static void parse_forced_key_frames(char *kf, OutputStream *ost,
+                                    AVCodecContext *avctx)
+{
+    char *p;
+    int n = 1, i, size, index = 0;
+    int64_t t, *pts;
+
+    for (p = kf; *p; p++)
+        if (*p == ',')
+            n++;
+    size = n;
+    pts = av_malloc_array(size, sizeof(*pts));
+    if (!pts) {
+        av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
+        exit_program(1);
+    }
+
+    p = kf;
+    for (i = 0; i < n; i++) {
+        char *next = strchr(p, ',');
+
+        if (next)
+            *next++ = 0;
+
+        if (!memcmp(p, "chapters", 8)) {
+
+            AVFormatContext *avf = output_files[ost->file_index]->ctx;
+            int j;
+
+            if (avf->nb_chapters > INT_MAX - size ||
+                !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
+                                     sizeof(*pts)))) {
+                av_log(NULL, AV_LOG_FATAL,
+                       "Could not allocate forced key frames array.\n");
+                exit_program(1);
+            }
+            t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
+            t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
+
+            for (j = 0; j < avf->nb_chapters; j++) {
+                AVChapter *c = avf->chapters[j];
+                av_assert1(index < size);
+                pts[index++] = av_rescale_q(c->start, c->time_base,
+                                            avctx->time_base) + t;
+            }
+
+        } else {
+
+            t = parse_time_or_die("force_key_frames", p, 1);
+            av_assert1(index < size);
+            pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
+
+        }
+
+        p = next;
+    }
+
+    av_assert0(index == size);
+    qsort(pts, size, sizeof(*pts), compare_int64);
+    ost->forced_kf_count = size;
+    ost->forced_kf_pts   = pts;
+}
+
+static void init_encoder_time_base(OutputStream *ost, AVRational default_time_base)
+{
+    InputStream *ist = get_input_stream(ost);
+    AVCodecContext *enc_ctx = ost->enc_ctx;
+    AVFormatContext *oc;
+
+    if (ost->enc_timebase.num > 0) {
+        enc_ctx->time_base = ost->enc_timebase;
+        return;
+    }
+
+    if (ost->enc_timebase.num < 0) {
+        if (ist) {
+            enc_ctx->time_base = ist->st->time_base;
+            return;
+        }
+
+        oc = output_files[ost->file_index]->ctx;
+        av_log(oc, AV_LOG_WARNING, "Input stream data not available, using default time base\n");
+    }
+
+    enc_ctx->time_base = default_time_base;
+}
+
+static int init_output_stream_encode(OutputStream *ost)
+{
+    InputStream *ist = get_input_stream(ost);
+    AVCodecContext *enc_ctx = ost->enc_ctx;
+    AVCodecContext *dec_ctx = NULL;
+    AVFormatContext *oc = output_files[ost->file_index]->ctx;
+    int j, ret;
+
+    set_encoder_id(output_files[ost->file_index], ost);
+
+    // Muxers use AV_PKT_DATA_DISPLAYMATRIX to signal rotation. On the other
+    // hand, the legacy API makes demuxers set "rotate" metadata entries,
+    // which have to be filtered out to prevent leaking them to output files.
+    av_dict_set(&ost->st->metadata, "rotate", NULL, 0);
+
+    if (ist) {
+        ost->st->disposition          = ist->st->disposition;
+
+        dec_ctx = ist->dec_ctx;
+
+        enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
+    } else {
+        for (j = 0; j < oc->nb_streams; j++) {
+            AVStream *st = oc->streams[j];
+            if (st != ost->st && st->codecpar->codec_type == ost->st->codecpar->codec_type)
+                break;
+        }
+        if (j == oc->nb_streams)
+            if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ||
+                ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+                ost->st->disposition = AV_DISPOSITION_DEFAULT;
+    }
+
+    if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+        if (!ost->frame_rate.num)
+            ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
+        if (ist && !ost->frame_rate.num)
+            ost->frame_rate = ist->framerate;
+        if (ist && !ost->frame_rate.num)
+            ost->frame_rate = ist->st->r_frame_rate;
+        if (ist && !ost->frame_rate.num) {
+            ost->frame_rate = (AVRational){25, 1};
+            av_log(NULL, AV_LOG_WARNING,
+                   "No information "
+                   "about the input framerate is available. Falling "
+                   "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
+                   "if you want a different framerate.\n",
+                   ost->file_index, ost->index);
+        }
+//      ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
+        if (ost->enc->supported_framerates && !ost->force_fps) {
+            int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
+            ost->frame_rate = ost->enc->supported_framerates[idx];
+        }
+        // reduce frame rate for mpeg4 to be within the spec limits
+        if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
+            av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
+                      ost->frame_rate.num, ost->frame_rate.den, 65535);
+        }
+    }
+
+    switch (enc_ctx->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        enc_ctx->sample_fmt     = av_buffersink_get_format(ost->filter->filter);
+        if (dec_ctx)
+            enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
+                                                 av_get_bytes_per_sample(enc_ctx->sample_fmt) << 3);
+        enc_ctx->sample_rate    = av_buffersink_get_sample_rate(ost->filter->filter);
+        enc_ctx->channel_layout = av_buffersink_get_channel_layout(ost->filter->filter);
+        enc_ctx->channels       = av_buffersink_get_channels(ost->filter->filter);
+
+        init_encoder_time_base(ost, av_make_q(1, enc_ctx->sample_rate));
+        break;
+
+    case AVMEDIA_TYPE_VIDEO:
+        init_encoder_time_base(ost, av_inv_q(ost->frame_rate));
+
+        if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
+            enc_ctx->time_base = av_buffersink_get_time_base(ost->filter->filter);
+        if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
+           && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
+            av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
+                                       "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
+        }
+        for (j = 0; j < ost->forced_kf_count; j++)
+            ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
+                                                 AV_TIME_BASE_Q,
+                                                 enc_ctx->time_base);
+
+        enc_ctx->width  = av_buffersink_get_w(ost->filter->filter);
+        enc_ctx->height = av_buffersink_get_h(ost->filter->filter);
+        enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
+            ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
+            av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
+            av_buffersink_get_sample_aspect_ratio(ost->filter->filter);
+
+        enc_ctx->pix_fmt = av_buffersink_get_format(ost->filter->filter);
+        if (dec_ctx)
+            enc_ctx->bits_per_raw_sample = FFMIN(dec_ctx->bits_per_raw_sample,
+                                                 av_pix_fmt_desc_get(enc_ctx->pix_fmt)->comp[0].depth);
+
+        enc_ctx->framerate = ost->frame_rate;
+
+        ost->st->avg_frame_rate = ost->frame_rate;
+
+        if (!dec_ctx ||
+            enc_ctx->width   != dec_ctx->width  ||
+            enc_ctx->height  != dec_ctx->height ||
+            enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
+            enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
+        }
+
+        if (ost->forced_keyframes) {
+            if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
+                ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
+                                    forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
+                if (ret < 0) {
+                    av_log(NULL, AV_LOG_ERROR,
+                           "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
+                    return ret;
+                }
+                ost->forced_keyframes_expr_const_values[FKF_N] = 0;
+                ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
+                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
+                ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
+
+            // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
+            // parse it only for static kf timings
+            } else if(strncmp(ost->forced_keyframes, "source", 6)) {
+                parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
+            }
+        }
+        break;
+    case AVMEDIA_TYPE_SUBTITLE:
+        enc_ctx->time_base = AV_TIME_BASE_Q;
+        if (!enc_ctx->width) {
+            enc_ctx->width     = input_streams[ost->source_index]->st->codecpar->width;
+            enc_ctx->height    = input_streams[ost->source_index]->st->codecpar->height;
+        }
+        break;
+    case AVMEDIA_TYPE_DATA:
+        break;
+    default:
+        abort();
+        break;
+    }
+
+    ost->mux_timebase = enc_ctx->time_base;
+
+    return 0;
+}
+
+static int init_output_stream(OutputStream *ost, char *error, int error_len)
+{
+    int ret = 0;
+
+    if (ost->encoding_needed) {
+        AVCodec      *codec = ost->enc;
+        AVCodecContext *dec = NULL;
+        InputStream *ist;
+
+        ret = init_output_stream_encode(ost);
+        if (ret < 0)
+            return ret;
+
+        if ((ist = get_input_stream(ost)))
+            dec = ist->dec_ctx;
+        if (dec && dec->subtitle_header) {
+            /* ASS code assumes this buffer is null terminated so add extra byte. */
+            ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
+            if (!ost->enc_ctx->subtitle_header)
+                return AVERROR(ENOMEM);
+            memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
+            ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
+        }
+        if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
+            av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
+        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
+            !codec->defaults &&
+            !av_dict_get(ost->encoder_opts, "b", NULL, 0) &&
+            !av_dict_get(ost->encoder_opts, "ab", NULL, 0))
+            av_dict_set(&ost->encoder_opts, "b", "128000", 0);
+
+        if (ost->filter && av_buffersink_get_hw_frames_ctx(ost->filter->filter) &&
+            ((AVHWFramesContext*)av_buffersink_get_hw_frames_ctx(ost->filter->filter)->data)->format ==
+            av_buffersink_get_format(ost->filter->filter)) {
+            ost->enc_ctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx(ost->filter->filter));
+            if (!ost->enc_ctx->hw_frames_ctx)
+                return AVERROR(ENOMEM);
+        } else {
+            ret = hw_device_setup_for_encode(ost);
+            if (ret < 0) {
+                snprintf(error, error_len, "Device setup failed for "
+                         "encoder on output stream #%d:%d : %s",
+                     ost->file_index, ost->index, av_err2str(ret));
+                return ret;
+            }
+        }
+
+        if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
+            if (ret == AVERROR_EXPERIMENTAL)
+                abort_codec_experimental(codec, 1);
+            snprintf(error, error_len,
+                     "Error while opening encoder for output stream #%d:%d - "
+                     "maybe incorrect parameters such as bit_rate, rate, width or height",
+                    ost->file_index, ost->index);
+            return ret;
+        }
+        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
+            !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
+            av_buffersink_set_frame_size(ost->filter->filter,
+                                            ost->enc_ctx->frame_size);
+        assert_avoptions(ost->encoder_opts);
+        if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
+            av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
+                                         " It takes bits/s as argument, not kbits/s\n");
+
+        ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_FATAL,
+                   "Error initializing the output stream codec context.\n");
+            exit_program(1);
+        }
+        /*
+         * FIXME: ost->st->codec should't be needed here anymore.
+         */
+        ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
+        if (ret < 0)
+            return ret;
+
+        if (ost->enc_ctx->nb_coded_side_data) {
+            int i;
+
+            for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
+                const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
+                uint8_t *dst_data;
+
+                dst_data = av_stream_new_side_data(ost->st, sd_src->type, sd_src->size);
+                if (!dst_data)
+                    return AVERROR(ENOMEM);
+                memcpy(dst_data, sd_src->data, sd_src->size);
+            }
+        }
+
+        /*
+         * Add global input side data. For now this is naive, and copies it
+         * from the input stream's global side data. All side data should
+         * really be funneled over AVFrame and libavfilter, then added back to
+         * packet side data, and then potentially using the first packet for
+         * global side data.
+         */
+        if (ist) {
+            int i;
+            for (i = 0; i < ist->st->nb_side_data; i++) {
+                AVPacketSideData *sd = &ist->st->side_data[i];
+                uint8_t *dst = av_stream_new_side_data(ost->st, sd->type, sd->size);
+                if (!dst)
+                    return AVERROR(ENOMEM);
+                memcpy(dst, sd->data, sd->size);
+                if (ist->autorotate && sd->type == AV_PKT_DATA_DISPLAYMATRIX)
+                    av_display_rotation_set((uint32_t *)dst, 0);
+            }
+        }
+
+        // copy timebase while removing common factors
+        if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
+            ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
+
+        // copy estimated duration as a hint to the muxer
+        if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
+            ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
+
+        ost->st->codec->codec= ost->enc_ctx->codec;
+    } else if (ost->stream_copy) {
+        ret = init_output_stream_streamcopy(ost);
+        if (ret < 0)
+            return ret;
+
+        /*
+         * FIXME: will the codec context used by the parser during streamcopy
+         * This should go away with the new parser API.
+         */
+        ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
+        if (ret < 0)
+            return ret;
+    }
+
+    // parse user provided disposition, and update stream values
+    if (ost->disposition) {
+        static const AVOption opts[] = {
+            { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
+            { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
+            { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
+            { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
+            { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
+            { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
+            { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
+            { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
+            { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
+            { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
+            { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
+            { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
+            { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
+            { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
+            { NULL },
+        };
+        static const AVClass class = {
+            .class_name = "",
+            .item_name  = av_default_item_name,
+            .option     = opts,
+            .version    = LIBAVUTIL_VERSION_INT,
+        };
+        const AVClass *pclass = &class;
+
+        ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
+        if (ret < 0)
+            return ret;
+    }
+
+    /* initialize bitstream filters for the output stream
+     * needs to be done here, because the codec id for streamcopy is not
+     * known until now */
+    ret = init_output_bsfs(ost);
+    if (ret < 0)
+        return ret;
+
+    ost->initialized = 1;
+
+    ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
+    if (ret < 0)
+        return ret;
+
+    return ret;
+}
+
+static void report_new_stream(int input_index, AVPacket *pkt)
+{
+    InputFile *file = input_files[input_index];
+    AVStream *st = file->ctx->streams[pkt->stream_index];
+
+    if (pkt->stream_index < file->nb_streams_warn)
+        return;
+    av_log(file->ctx, AV_LOG_WARNING,
+           "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
+           av_get_media_type_string(st->codecpar->codec_type),
+           input_index, pkt->stream_index,
+           pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
+    file->nb_streams_warn = pkt->stream_index + 1;
+}
+
+static int transcode_init(void)
+{
+    int ret = 0, i, j, k;
+    AVFormatContext *oc;
+    OutputStream *ost;
+    InputStream *ist;
+    char error[1024] = {0};
+
+    for (i = 0; i < nb_filtergraphs; i++) {
+        FilterGraph *fg = filtergraphs[i];
+        for (j = 0; j < fg->nb_outputs; j++) {
+            OutputFilter *ofilter = fg->outputs[j];
+            if (!ofilter->ost || ofilter->ost->source_index >= 0)
+                continue;
+            if (fg->nb_inputs != 1)
+                continue;
+            for (k = nb_input_streams-1; k >= 0 ; k--)
+                if (fg->inputs[0]->ist == input_streams[k])
+                    break;
+            ofilter->ost->source_index = k;
+        }
+    }
+
+    /* init framerate emulation */
+    for (i = 0; i < nb_input_files; i++) {
+        InputFile *ifile = input_files[i];
+        if (ifile->rate_emu)
+            for (j = 0; j < ifile->nb_streams; j++)
+                input_streams[j + ifile->ist_index]->start = av_gettime_relative();
+    }
+
+    /* init input streams */
+    for (i = 0; i < nb_input_streams; i++)
+        if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
+            for (i = 0; i < nb_output_streams; i++) {
+                ost = output_streams[i];
+                avcodec_close(ost->enc_ctx);
+            }
+            goto dump_format;
+        }
+
+    /* open each encoder */
+    for (i = 0; i < nb_output_streams; i++) {
+        // skip streams fed from filtergraphs until we have a frame for them
+        if (output_streams[i]->filter)
+            continue;
+
+        ret = init_output_stream(output_streams[i], error, sizeof(error));
+        if (ret < 0)
+            goto dump_format;
+    }
+
+    /* discard unused programs */
+    for (i = 0; i < nb_input_files; i++) {
+        InputFile *ifile = input_files[i];
+        for (j = 0; j < ifile->ctx->nb_programs; j++) {
+            AVProgram *p = ifile->ctx->programs[j];
+            int discard  = AVDISCARD_ALL;
+
+            for (k = 0; k < p->nb_stream_indexes; k++)
+                if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
+                    discard = AVDISCARD_DEFAULT;
+                    break;
+                }
+            p->discard = discard;
+        }
+    }
+
+    /* write headers for files with no streams */
+    for (i = 0; i < nb_output_files; i++) {
+        oc = output_files[i]->ctx;
+        if (oc->oformat->flags & AVFMT_NOSTREAMS && oc->nb_streams == 0) {
+            ret = check_init_output_file(output_files[i], i);
+            if (ret < 0)
+                goto dump_format;
+        }
+    }
+
+ dump_format:
+    /* dump the stream mapping */
+    av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
+    for (i = 0; i < nb_input_streams; i++) {
+        ist = input_streams[i];
+
+        for (j = 0; j < ist->nb_filters; j++) {
+            if (!filtergraph_is_simple(ist->filters[j]->graph)) {
+                av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
+                       ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
+                       ist->filters[j]->name);
+                if (nb_filtergraphs > 1)
+                    av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
+                av_log(NULL, AV_LOG_INFO, "\n");
+            }
+        }
+    }
+
+    for (i = 0; i < nb_output_streams; i++) {
+        ost = output_streams[i];
+
+        if (ost->attachment_filename) {
+            /* an attached file */
+            av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
+                   ost->attachment_filename, ost->file_index, ost->index);
+            continue;
+        }
+
+        if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
+            /* output from a complex graph */
+            av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
+            if (nb_filtergraphs > 1)
+                av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
+
+            av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
+                   ost->index, ost->enc ? ost->enc->name : "?");
+            continue;
+        }
+
+        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
+               input_streams[ost->source_index]->file_index,
+               input_streams[ost->source_index]->st->index,
+               ost->file_index,
+               ost->index);
+        if (ost->sync_ist != input_streams[ost->source_index])
+            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
+                   ost->sync_ist->file_index,
+                   ost->sync_ist->st->index);
+        if (ost->stream_copy)
+            av_log(NULL, AV_LOG_INFO, " (copy)");
+        else {
+            const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
+            const AVCodec *out_codec   = ost->enc;
+            const char *decoder_name   = "?";
+            const char *in_codec_name  = "?";
+            const char *encoder_name   = "?";
+            const char *out_codec_name = "?";
+            const AVCodecDescriptor *desc;
+
+            if (in_codec) {
+                decoder_name  = in_codec->name;
+                desc = avcodec_descriptor_get(in_codec->id);
+                if (desc)
+                    in_codec_name = desc->name;
+                if (!strcmp(decoder_name, in_codec_name))
+                    decoder_name = "native";
+            }
+
+            if (out_codec) {
+                encoder_name   = out_codec->name;
+                desc = avcodec_descriptor_get(out_codec->id);
+                if (desc)
+                    out_codec_name = desc->name;
+                if (!strcmp(encoder_name, out_codec_name))
+                    encoder_name = "native";
+            }
+
+            av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
+                   in_codec_name, decoder_name,
+                   out_codec_name, encoder_name);
+        }
+        av_log(NULL, AV_LOG_INFO, "\n");
+    }
+
+    if (ret) {
+        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
+        return ret;
+    }
+
+    atomic_store(&transcode_init_done, 1);
+
+    return 0;
+}
+
+/* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
+static int need_output(void)
+{
+    int i;
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost    = output_streams[i];
+        OutputFile *of       = output_files[ost->file_index];
+        AVFormatContext *os  = output_files[ost->file_index]->ctx;
+
+        if (ost->finished ||
+            (os->pb && avio_tell(os->pb) >= of->limit_filesize))
+            continue;
+        if (ost->frame_number >= ost->max_frames) {
+            int j;
+            for (j = 0; j < of->ctx->nb_streams; j++)
+                close_output_stream(output_streams[of->ost_index + j]);
+            continue;
+        }
+
+        return 1;
+    }
+
+    return 0;
+}
+
+/**
+ * Select the output stream to process.
+ *
+ * @return  selected output stream, or NULL if none available
+ */
+static OutputStream *choose_output(void)
+{
+    int i;
+    int64_t opts_min = INT64_MAX;
+    OutputStream *ost_min = NULL;
+
+    for (i = 0; i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+        int64_t opts = ost->st->cur_dts == AV_NOPTS_VALUE ? INT64_MIN :
+                       av_rescale_q(ost->st->cur_dts, ost->st->time_base,
+                                    AV_TIME_BASE_Q);
+        if (ost->st->cur_dts == AV_NOPTS_VALUE)
+            av_log(NULL, AV_LOG_DEBUG, "cur_dts is invalid (this is harmless if it occurs once at the start per stream)\n");
+
+        if (!ost->initialized && !ost->inputs_done)
+            return ost;
+
+        if (!ost->finished && opts < opts_min) {
+            opts_min = opts;
+            ost_min  = ost->unavailable ? NULL : ost;
+        }
+    }
+    return ost_min;
+}
+
+static void set_tty_echo(int on)
+{
+#if HAVE_TERMIOS_H
+    struct termios tty;
+    if (tcgetattr(0, &tty) == 0) {
+        if (on) tty.c_lflag |= ECHO;
+        else    tty.c_lflag &= ~ECHO;
+        tcsetattr(0, TCSANOW, &tty);
+    }
+#endif
+}
+
+static int check_keyboard_interaction(int64_t cur_time)
+{
+    int i, ret, key;
+    static int64_t last_time;
+    if (received_nb_signals)
+        return AVERROR_EXIT;
+    /* read_key() returns 0 on EOF */
+    if(cur_time - last_time >= 100000 && !run_as_daemon){
+        key =  read_key();
+        last_time = cur_time;
+    }else
+        key = -1;
+    if (key == 'q')
+        return AVERROR_EXIT;
+    if (key == '+') av_log_set_level(av_log_get_level()+10);
+    if (key == '-') av_log_set_level(av_log_get_level()-10);
+    if (key == 's') qp_hist     ^= 1;
+    if (key == 'h'){
+        if (do_hex_dump){
+            do_hex_dump = do_pkt_dump = 0;
+        } else if(do_pkt_dump){
+            do_hex_dump = 1;
+        } else
+            do_pkt_dump = 1;
+        av_log_set_level(AV_LOG_DEBUG);
+    }
+    if (key == 'c' || key == 'C'){
+        char buf[4096], target[64], command[256], arg[256] = {0};
+        double time;
+        int k, n = 0;
+        fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
+        i = 0;
+        set_tty_echo(1);
+        while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
+            if (k > 0)
+                buf[i++] = k;
+        buf[i] = 0;
+        set_tty_echo(0);
+        fprintf(stderr, "\n");
+        if (k > 0 &&
+            (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
+            av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
+                   target, time, command, arg);
+            for (i = 0; i < nb_filtergraphs; i++) {
+                FilterGraph *fg = filtergraphs[i];
+                if (fg->graph) {
+                    if (time < 0) {
+                        ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
+                                                          key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
+                        fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
+                    } else if (key == 'c') {
+                        fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
+                        ret = AVERROR_PATCHWELCOME;
+                    } else {
+                        ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
+                        if (ret < 0)
+                            fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
+                    }
+                }
+            }
+        } else {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Parse error, at least 3 arguments were expected, "
+                   "only %d given in string '%s'\n", n, buf);
+        }
+    }
+    if (key == 'd' || key == 'D'){
+        int debug=0;
+        if(key == 'D') {
+            debug = input_streams[0]->st->codec->debug<<1;
+            if(!debug) debug = 1;
+            while(debug & (FF_DEBUG_DCT_COEFF
+#if FF_API_DEBUG_MV
+                                             |FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE
+#endif
+                                                                                  )) //unsupported, would just crash
+                debug += debug;
+        }else{
+            char buf[32];
+            int k = 0;
+            i = 0;
+            set_tty_echo(1);
+            while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
+                if (k > 0)
+                    buf[i++] = k;
+            buf[i] = 0;
+            set_tty_echo(0);
+            fprintf(stderr, "\n");
+            if (k <= 0 || sscanf(buf, "%d", &debug)!=1)
+                fprintf(stderr,"error parsing debug value\n");
+        }
+        for(i=0;i<nb_input_streams;i++) {
+            input_streams[i]->st->codec->debug = debug;
+        }
+        for(i=0;i<nb_output_streams;i++) {
+            OutputStream *ost = output_streams[i];
+            ost->enc_ctx->debug = debug;
+        }
+        if(debug) av_log_set_level(AV_LOG_DEBUG);
+        fprintf(stderr,"debug=%d\n", debug);
+    }
+    if (key == '?'){
+        fprintf(stderr, "key    function\n"
+                        "?      show this help\n"
+                        "+      increase verbosity\n"
+                        "-      decrease verbosity\n"
+                        "c      Send command to first matching filter supporting it\n"
+                        "C      Send/Queue command to all matching filters\n"
+                        "D      cycle through available debug modes\n"
+                        "h      dump packets/hex press to cycle through the 3 states\n"
+                        "q      quit\n"
+                        "s      Show QP histogram\n"
+        );
+    }
+    return 0;
+}
+
+#if HAVE_PTHREADS
+static void *input_thread(void *arg)
+{
+    InputFile *f = arg;
+    unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
+    int ret = 0;
+
+    while (1) {
+        AVPacket pkt;
+        ret = av_read_frame(f->ctx, &pkt);
+
+        if (ret == AVERROR(EAGAIN)) {
+            av_usleep(10000);
+            continue;
+        }
+        if (ret < 0) {
+            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
+            break;
+        }
+        ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
+        if (flags && ret == AVERROR(EAGAIN)) {
+            flags = 0;
+            ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
+            av_log(f->ctx, AV_LOG_WARNING,
+                   "Thread message queue blocking; consider raising the "
+                   "thread_queue_size option (current value: %d)\n",
+                   f->thread_queue_size);
+        }
+        if (ret < 0) {
+            if (ret != AVERROR_EOF)
+                av_log(f->ctx, AV_LOG_ERROR,
+                       "Unable to send packet to main thread: %s\n",
+                       av_err2str(ret));
+            av_packet_unref(&pkt);
+            av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
+            break;
+        }
+    }
+
+    return NULL;
+}
+
+static void free_input_threads(void)
+{
+    int i;
+
+    for (i = 0; i < nb_input_files; i++) {
+        InputFile *f = input_files[i];
+        AVPacket pkt;
+
+        if (!f || !f->in_thread_queue)
+            continue;
+        av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
+        while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
+            av_packet_unref(&pkt);
+
+        pthread_join(f->thread, NULL);
+        f->joined = 1;
+        av_thread_message_queue_free(&f->in_thread_queue);
+    }
+}
+
+static int init_input_threads(void)
+{
+    int i, ret;
+
+    if (nb_input_files == 1)
+        return 0;
+
+    for (i = 0; i < nb_input_files; i++) {
+        InputFile *f = input_files[i];
+
+        if (f->ctx->pb ? !f->ctx->pb->seekable :
+            strcmp(f->ctx->iformat->name, "lavfi"))
+            f->non_blocking = 1;
+        ret = av_thread_message_queue_alloc(&f->in_thread_queue,
+                                            f->thread_queue_size, sizeof(AVPacket));
+        if (ret < 0)
+            return ret;
+
+        if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
+            av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
+            av_thread_message_queue_free(&f->in_thread_queue);
+            return AVERROR(ret);
+        }
+    }
+    return 0;
+}
+
+static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
+{
+    return av_thread_message_queue_recv(f->in_thread_queue, pkt,
+                                        f->non_blocking ?
+                                        AV_THREAD_MESSAGE_NONBLOCK : 0);
+}
+#endif
+
+static int get_input_packet(InputFile *f, AVPacket *pkt)
+{
+    if (f->rate_emu) {
+        int i;
+        for (i = 0; i < f->nb_streams; i++) {
+            InputStream *ist = input_streams[f->ist_index + i];
+            int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
+            int64_t now = av_gettime_relative() - ist->start;
+            if (pts > now)
+                return AVERROR(EAGAIN);
+        }
+    }
+
+#if HAVE_PTHREADS
+    if (nb_input_files > 1)
+        return get_input_packet_mt(f, pkt);
+#endif
+    return av_read_frame(f->ctx, pkt);
+}
+
+static int got_eagain(void)
+{
+    int i;
+    for (i = 0; i < nb_output_streams; i++)
+        if (output_streams[i]->unavailable)
+            return 1;
+    return 0;
+}
+
+static void reset_eagain(void)
+{
+    int i;
+    for (i = 0; i < nb_input_files; i++)
+        input_files[i]->eagain = 0;
+    for (i = 0; i < nb_output_streams; i++)
+        output_streams[i]->unavailable = 0;
+}
+
+// set duration to max(tmp, duration) in a proper time base and return duration's time_base
+static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
+                                AVRational time_base)
+{
+    int ret;
+
+    if (!*duration) {
+        *duration = tmp;
+        return tmp_time_base;
+    }
+
+    ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
+    if (ret < 0) {
+        *duration = tmp;
+        return tmp_time_base;
+    }
+
+    return time_base;
+}
+
+static int seek_to_start(InputFile *ifile, AVFormatContext *is)
+{
+    InputStream *ist;
+    AVCodecContext *avctx;
+    int i, ret, has_audio = 0;
+    int64_t duration = 0;
+
+    ret = av_seek_frame(is, -1, is->start_time, 0);
+    if (ret < 0)
+        return ret;
+
+    for (i = 0; i < ifile->nb_streams; i++) {
+        ist   = input_streams[ifile->ist_index + i];
+        avctx = ist->dec_ctx;
+
+        // flush decoders
+        if (ist->decoding_needed) {
+            process_input_packet(ist, NULL, 1);
+            avcodec_flush_buffers(avctx);
+        }
+
+        /* duration is the length of the last frame in a stream
+         * when audio stream is present we don't care about
+         * last video frame length because it's not defined exactly */
+        if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
+            has_audio = 1;
+    }
+
+    for (i = 0; i < ifile->nb_streams; i++) {
+        ist   = input_streams[ifile->ist_index + i];
+        avctx = ist->dec_ctx;
+
+        if (has_audio) {
+            if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
+                AVRational sample_rate = {1, avctx->sample_rate};
+
+                duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
+            } else
+                continue;
+        } else {
+            if (ist->framerate.num) {
+                duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
+            } else if (ist->st->avg_frame_rate.num) {
+                duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
+            } else duration = 1;
+        }
+        if (!ifile->duration)
+            ifile->time_base = ist->st->time_base;
+        /* the total duration of the stream, max_pts - min_pts is
+         * the duration of the stream without the last frame */
+        duration += ist->max_pts - ist->min_pts;
+        ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
+                                        ifile->time_base);
+    }
+
+    if (ifile->loop > 0)
+        ifile->loop--;
+
+    return ret;
+}
+
+/*
+ * Return
+ * - 0 -- one packet was read and processed
+ * - AVERROR(EAGAIN) -- no packets were available for selected file,
+ *   this function should be called again
+ * - AVERROR_EOF -- this function should not be called again
+ */
+static int process_input(int file_index)
+{
+    InputFile *ifile = input_files[file_index];
+    AVFormatContext *is;
+    InputStream *ist;
+    AVPacket pkt;
+    int ret, i, j;
+    int64_t duration;
+    int64_t pkt_dts;
+
+    is  = ifile->ctx;
+    ret = get_input_packet(ifile, &pkt);
+
+    if (ret == AVERROR(EAGAIN)) {
+        ifile->eagain = 1;
+        return ret;
+    }
+    if (ret < 0 && ifile->loop) {
+        if ((ret = seek_to_start(ifile, is)) < 0)
+            return ret;
+        ret = get_input_packet(ifile, &pkt);
+        if (ret == AVERROR(EAGAIN)) {
+            ifile->eagain = 1;
+            return ret;
+        }
+    }
+    if (ret < 0) {
+        if (ret != AVERROR_EOF) {
+            print_error(is->filename, ret);
+            if (exit_on_error)
+                exit_program(1);
+        }
+
+        for (i = 0; i < ifile->nb_streams; i++) {
+            ist = input_streams[ifile->ist_index + i];
+            if (ist->decoding_needed) {
+                ret = process_input_packet(ist, NULL, 0);
+                if (ret>0)
+                    return 0;
+            }
+
+            /* mark all outputs that don't go through lavfi as finished */
+            for (j = 0; j < nb_output_streams; j++) {
+                OutputStream *ost = output_streams[j];
+
+                if (ost->source_index == ifile->ist_index + i &&
+                    (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
+                    finish_output_stream(ost);
+            }
+        }
+
+        ifile->eof_reached = 1;
+        return AVERROR(EAGAIN);
+    }
+
+    reset_eagain();
+
+    if (do_pkt_dump) {
+        av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
+                         is->streams[pkt.stream_index]);
+    }
+    /* the following test is needed in case new streams appear
+       dynamically in stream : we ignore them */
+    if (pkt.stream_index >= ifile->nb_streams) {
+        report_new_stream(file_index, &pkt);
+        goto discard_packet;
+    }
+
+    ist = input_streams[ifile->ist_index + pkt.stream_index];
+
+    ist->data_size += pkt.size;
+    ist->nb_packets++;
+
+    if (ist->discard)
+        goto discard_packet;
+
+    if (exit_on_error && (pkt.flags & AV_PKT_FLAG_CORRUPT)) {
+        av_log(NULL, AV_LOG_FATAL, "%s: corrupt input packet in stream %d\n", is->filename, pkt.stream_index);
+        exit_program(1);
+    }
+
+    if (debug_ts) {
+        av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
+               "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
+               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
+               av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
+               av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
+               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
+               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
+               av_ts2str(input_files[ist->file_index]->ts_offset),
+               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
+    }
+
+    if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
+        int64_t stime, stime2;
+        // Correcting starttime based on the enabled streams
+        // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
+        //       so we instead do it here as part of discontinuity handling
+        if (   ist->next_dts == AV_NOPTS_VALUE
+            && ifile->ts_offset == -is->start_time
+            && (is->iformat->flags & AVFMT_TS_DISCONT)) {
+            int64_t new_start_time = INT64_MAX;
+            for (i=0; i<is->nb_streams; i++) {
+                AVStream *st = is->streams[i];
+                if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
+                    continue;
+                new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
+            }
+            if (new_start_time > is->start_time) {
+                av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
+                ifile->ts_offset = -new_start_time;
+            }
+        }
+
+        stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
+        stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
+        ist->wrap_correction_done = 1;
+
+        if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
+            pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
+            ist->wrap_correction_done = 0;
+        }
+        if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
+            pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
+            ist->wrap_correction_done = 0;
+        }
+    }
+
+    /* add the stream-global side data to the first packet */
+    if (ist->nb_packets == 1) {
+        for (i = 0; i < ist->st->nb_side_data; i++) {
+            AVPacketSideData *src_sd = &ist->st->side_data[i];
+            uint8_t *dst_data;
+
+            if (src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
+                continue;
+
+            if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
+                continue;
+
+            dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
+            if (!dst_data)
+                exit_program(1);
+
+            memcpy(dst_data, src_sd->data, src_sd->size);
+        }
+    }
+
+    if (pkt.dts != AV_NOPTS_VALUE)
+        pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
+    if (pkt.pts != AV_NOPTS_VALUE)
+        pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
+
+    if (pkt.pts != AV_NOPTS_VALUE)
+        pkt.pts *= ist->ts_scale;
+    if (pkt.dts != AV_NOPTS_VALUE)
+        pkt.dts *= ist->ts_scale;
+
+    pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
+    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
+         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
+        pkt_dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
+        && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
+        int64_t delta   = pkt_dts - ifile->last_ts;
+        if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
+            delta >  1LL*dts_delta_threshold*AV_TIME_BASE){
+            ifile->ts_offset -= delta;
+            av_log(NULL, AV_LOG_DEBUG,
+                   "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
+                   delta, ifile->ts_offset);
+            pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
+            if (pkt.pts != AV_NOPTS_VALUE)
+                pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
+        }
+    }
+
+    duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
+    if (pkt.pts != AV_NOPTS_VALUE) {
+        pkt.pts += duration;
+        ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
+        ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
+    }
+
+    if (pkt.dts != AV_NOPTS_VALUE)
+        pkt.dts += duration;
+
+    pkt_dts = av_rescale_q_rnd(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
+    if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
+         ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
+         pkt_dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
+        !copy_ts) {
+        int64_t delta   = pkt_dts - ist->next_dts;
+        if (is->iformat->flags & AVFMT_TS_DISCONT) {
+            if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
+                delta >  1LL*dts_delta_threshold*AV_TIME_BASE ||
+                pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
+                ifile->ts_offset -= delta;
+                av_log(NULL, AV_LOG_DEBUG,
+                       "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
+                       delta, ifile->ts_offset);
+                pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
+                if (pkt.pts != AV_NOPTS_VALUE)
+                    pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
+            }
+        } else {
+            if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
+                 delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
+                av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
+                pkt.dts = AV_NOPTS_VALUE;
+            }
+            if (pkt.pts != AV_NOPTS_VALUE){
+                int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
+                delta   = pkt_pts - ist->next_dts;
+                if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
+                     delta >  1LL*dts_error_threshold*AV_TIME_BASE) {
+                    av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
+                    pkt.pts = AV_NOPTS_VALUE;
+                }
+            }
+        }
+    }
+
+    if (pkt.dts != AV_NOPTS_VALUE)
+        ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
+
+    if (debug_ts) {
+        av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
+               ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->dec_ctx->codec_type),
+               av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
+               av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
+               av_ts2str(input_files[ist->file_index]->ts_offset),
+               av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
+    }
+
+    sub2video_heartbeat(ist, pkt.pts);
+
+    process_input_packet(ist, &pkt, 0);
+
+discard_packet:
+    av_packet_unref(&pkt);
+
+    return 0;
+}
+
+/**
+ * Perform a step of transcoding for the specified filter graph.
+ *
+ * @param[in]  graph     filter graph to consider
+ * @param[out] best_ist  input stream where a frame would allow to continue
+ * @return  0 for success, <0 for error
+ */
+static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
+{
+    int i, ret;
+    int nb_requests, nb_requests_max = 0;
+    InputFilter *ifilter;
+    InputStream *ist;
+
+    *best_ist = NULL;
+    ret = avfilter_graph_request_oldest(graph->graph);
+    if (ret >= 0)
+        return reap_filters(0);
+
+    if (ret == AVERROR_EOF) {
+        ret = reap_filters(1);
+        for (i = 0; i < graph->nb_outputs; i++)
+            close_output_stream(graph->outputs[i]->ost);
+        return ret;
+    }
+    if (ret != AVERROR(EAGAIN))
+        return ret;
+
+    for (i = 0; i < graph->nb_inputs; i++) {
+        ifilter = graph->inputs[i];
+        ist = ifilter->ist;
+        if (input_files[ist->file_index]->eagain ||
+            input_files[ist->file_index]->eof_reached)
+            continue;
+        nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
+        if (nb_requests > nb_requests_max) {
+            nb_requests_max = nb_requests;
+            *best_ist = ist;
+        }
+    }
+
+    if (!*best_ist)
+        for (i = 0; i < graph->nb_outputs; i++)
+            graph->outputs[i]->ost->unavailable = 1;
+
+    return 0;
+}
+
+/**
+ * Run a single step of transcoding.
+ *
+ * @return  0 for success, <0 for error
+ */
+static int transcode_step(void)
+{
+    OutputStream *ost;
+    InputStream  *ist = NULL;
+    int ret;
+
+    ost = choose_output();
+    if (!ost) {
+        if (got_eagain()) {
+            reset_eagain();
+            av_usleep(10000);
+            return 0;
+        }
+        av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
+        return AVERROR_EOF;
+    }
+
+    if (ost->filter && !ost->filter->graph->graph) {
+        if (ifilter_has_all_input_formats(ost->filter->graph)) {
+            ret = configure_filtergraph(ost->filter->graph);
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
+                return ret;
+            }
+        }
+    }
+
+    if (ost->filter && ost->filter->graph->graph) {
+        if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
+            return ret;
+        if (!ist)
+            return 0;
+    } else if (ost->filter) {
+        int i;
+        for (i = 0; i < ost->filter->graph->nb_inputs; i++) {
+            InputFilter *ifilter = ost->filter->graph->inputs[i];
+            if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) {
+                ist = ifilter->ist;
+                break;
+            }
+        }
+        if (!ist) {
+            ost->inputs_done = 1;
+            return 0;
+        }
+    } else {
+        av_assert0(ost->source_index >= 0);
+        ist = input_streams[ost->source_index];
+    }
+
+    ret = process_input(ist->file_index);
+    if (ret == AVERROR(EAGAIN)) {
+        if (input_files[ist->file_index]->eagain)
+            ost->unavailable = 1;
+        return 0;
+    }
+
+    if (ret < 0)
+        return ret == AVERROR_EOF ? 0 : ret;
+
+    return reap_filters(0);
+}
+
+/*
+ * The following code is the main loop of the file converter
+ */
+static int transcode(void)
+{
+    int ret, i;
+    AVFormatContext *os;
+    OutputStream *ost;
+    InputStream *ist;
+    int64_t timer_start;
+    int64_t total_packets_written = 0;
+
+    ret = transcode_init();
+    if (ret < 0)
+        goto fail;
+
+    if (stdin_interaction) {
+        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
+    }
+
+    timer_start = av_gettime_relative();
+
+#if HAVE_PTHREADS
+    if ((ret = init_input_threads()) < 0)
+        goto fail;
+#endif
+
+    while (!received_sigterm) {
+        int64_t cur_time= av_gettime_relative();
+
+        /* if 'q' pressed, exits */
+        if (stdin_interaction)
+            if (check_keyboard_interaction(cur_time) < 0)
+                break;
+
+        /* check if there's any stream where output is still needed */
+        if (!need_output()) {
+            av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
+            break;
+        }
+
+        ret = transcode_step();
+        if (ret < 0 && ret != AVERROR_EOF) {
+            char errbuf[128];
+            av_strerror(ret, errbuf, sizeof(errbuf));
+
+            av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
+            break;
+        }
+
+        /* dump report by using the output first video and audio streams */
+        print_report(0, timer_start, cur_time);
+    }
+#if HAVE_PTHREADS
+    free_input_threads();
+#endif
+
+    /* at the end of stream, we must flush the decoder buffers */
+    for (i = 0; i < nb_input_streams; i++) {
+        ist = input_streams[i];
+        if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
+            process_input_packet(ist, NULL, 0);
+        }
+    }
+    flush_encoders();
+
+    term_exit();
+
+    /* write the trailer if needed and close file */
+    for (i = 0; i < nb_output_files; i++) {
+        os = output_files[i]->ctx;
+        if (!output_files[i]->header_written) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Nothing was written into output file %d (%s), because "
+                   "at least one of its streams received no packets.\n",
+                   i, os->filename);
+            continue;
+        }
+        if ((ret = av_write_trailer(os)) < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error writing trailer of %s: %s\n", os->filename, av_err2str(ret));
+            if (exit_on_error)
+                exit_program(1);
+        }
+    }
+
+    /* dump report by using the first video and audio streams */
+    print_report(1, timer_start, av_gettime_relative());
+
+    /* close each encoder */
+    for (i = 0; i < nb_output_streams; i++) {
+        ost = output_streams[i];
+        if (ost->encoding_needed) {
+            av_freep(&ost->enc_ctx->stats_in);
+        }
+        total_packets_written += ost->packets_written;
+    }
+
+    if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
+        av_log(NULL, AV_LOG_FATAL, "Empty output\n");
+        exit_program(1);
+    }
+
+    /* close each decoder */
+    for (i = 0; i < nb_input_streams; i++) {
+        ist = input_streams[i];
+        if (ist->decoding_needed) {
+            avcodec_close(ist->dec_ctx);
+            if (ist->hwaccel_uninit)
+                ist->hwaccel_uninit(ist->dec_ctx);
+        }
+    }
+
+    av_buffer_unref(&hw_device_ctx);
+    hw_device_free_all();
+
+    /* finished ! */
+    ret = 0;
+
+ fail:
+#if HAVE_PTHREADS
+    free_input_threads();
+#endif
+
+    if (output_streams) {
+        for (i = 0; i < nb_output_streams; i++) {
+            ost = output_streams[i];
+            if (ost) {
+                if (ost->logfile) {
+                    if (fclose(ost->logfile))
+                        av_log(NULL, AV_LOG_ERROR,
+                               "Error closing logfile, loss of information possible: %s\n",
+                               av_err2str(AVERROR(errno)));
+                    ost->logfile = NULL;
+                }
+                av_freep(&ost->forced_kf_pts);
+                av_freep(&ost->apad);
+                av_freep(&ost->disposition);
+                av_dict_free(&ost->encoder_opts);
+                av_dict_free(&ost->sws_dict);
+                av_dict_free(&ost->swr_opts);
+                av_dict_free(&ost->resample_opts);
+            }
+        }
+    }
+    return ret;
+}
+
+
+static int64_t getutime(void)
+{
+#if HAVE_GETRUSAGE
+    struct rusage rusage;
+
+    getrusage(RUSAGE_SELF, &rusage);
+    return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
+#elif HAVE_GETPROCESSTIMES
+    HANDLE proc;
+    FILETIME c, e, k, u;
+    proc = GetCurrentProcess();
+    GetProcessTimes(proc, &c, &e, &k, &u);
+    return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
+#else
+    return av_gettime_relative();
+#endif
+}
+
+static int64_t getmaxrss(void)
+{
+#if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
+    struct rusage rusage;
+    getrusage(RUSAGE_SELF, &rusage);
+    return (int64_t)rusage.ru_maxrss * 1024;
+#elif HAVE_GETPROCESSMEMORYINFO
+    HANDLE proc;
+    PROCESS_MEMORY_COUNTERS memcounters;
+    proc = GetCurrentProcess();
+    memcounters.cb = sizeof(memcounters);
+    GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
+    return memcounters.PeakPagefileUsage;
+#else
+    return 0;
+#endif
+}
+
+static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
+{
+}
+
+int main(int argc, char **argv)
+{
+    int i, ret;
+    int64_t ti;
+
+    init_dynload();
+
+    register_exit(ffmpeg_cleanup);
+
+    setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
+
+    av_log_set_flags(AV_LOG_SKIP_REPEATED);
+    parse_loglevel(argc, argv, options);
+
+    if(argc>1 && !strcmp(argv[1], "-d")){
+        run_as_daemon=1;
+        av_log_set_callback(log_callback_null);
+        argc--;
+        argv++;
+    }
+
+    avcodec_register_all();
+#if CONFIG_AVDEVICE
+    avdevice_register_all();
+#endif
+    avfilter_register_all();
+    av_register_all();
+    avformat_network_init();
+
+    show_banner(argc, argv, options);
+
+    /* parse options and open all input/output files */
+    ret = ffmpeg_parse_options(argc, argv);
+    if (ret < 0)
+        exit_program(1);
+
+    if (nb_output_files <= 0 && nb_input_files == 0) {
+        show_usage();
+        av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
+        exit_program(1);
+    }
+
+    /* file converter / grab */
+    if (nb_output_files <= 0) {
+        av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
+        exit_program(1);
+    }
+
+//     if (nb_input_files == 0) {
+//         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
+//         exit_program(1);
+//     }
+
+    for (i = 0; i < nb_output_files; i++) {
+        if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
+            want_sdp = 0;
+    }
+
+    current_time = ti = getutime();
+    if (transcode() < 0)
+        exit_program(1);
+    ti = getutime() - ti;
+    if (do_benchmark) {
+        av_log(NULL, AV_LOG_INFO, "bench: utime=%0.3fs\n", ti / 1000000.0);
+    }
+    av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
+           decode_error_stat[0], decode_error_stat[1]);
+    if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
+        exit_program(69);
+
+    exit_program(received_nb_signals ? 255 : main_return_code);
+    return main_return_code;
+}
diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
new file mode 100644
index 0000000000..f6c76bcc55
--- /dev/null
+++ b/fftools/ffmpeg.h
@@ -0,0 +1,679 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFTOOLS_FFMPEG_H
+#define FFTOOLS_FFMPEG_H
+
+#include "config.h"
+
+#include <stdint.h>
+#include <stdio.h>
+#include <signal.h>
+
+#if HAVE_PTHREADS
+#include <pthread.h>
+#endif
+
+#include "cmdutils.h"
+
+#include "libavformat/avformat.h"
+#include "libavformat/avio.h"
+
+#include "libavcodec/avcodec.h"
+
+#include "libavfilter/avfilter.h"
+
+#include "libavutil/avutil.h"
+#include "libavutil/dict.h"
+#include "libavutil/eval.h"
+#include "libavutil/fifo.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/pixfmt.h"
+#include "libavutil/rational.h"
+#include "libavutil/threadmessage.h"
+
+#include "libswresample/swresample.h"
+
+#define VSYNC_AUTO       -1
+#define VSYNC_PASSTHROUGH 0
+#define VSYNC_CFR         1
+#define VSYNC_VFR         2
+#define VSYNC_VSCFR       0xfe
+#define VSYNC_DROP        0xff
+
+#define MAX_STREAMS 1024    /* arbitrary sanity check value */
+
+enum HWAccelID {
+    HWACCEL_NONE = 0,
+    HWACCEL_AUTO,
+    HWACCEL_VDPAU,
+    HWACCEL_DXVA2,
+    HWACCEL_VDA,
+    HWACCEL_VIDEOTOOLBOX,
+    HWACCEL_QSV,
+    HWACCEL_VAAPI,
+    HWACCEL_CUVID,
+    HWACCEL_D3D11VA,
+};
+
+typedef struct HWAccel {
+    const char *name;
+    int (*init)(AVCodecContext *s);
+    enum HWAccelID id;
+    enum AVPixelFormat pix_fmt;
+    enum AVHWDeviceType device_type;
+} HWAccel;
+
+typedef struct HWDevice {
+    char *name;
+    enum AVHWDeviceType type;
+    AVBufferRef *device_ref;
+} HWDevice;
+
+/* select an input stream for an output stream */
+typedef struct StreamMap {
+    int disabled;           /* 1 is this mapping is disabled by a negative map */
+    int file_index;
+    int stream_index;
+    int sync_file_index;
+    int sync_stream_index;
+    char *linklabel;       /* name of an output link, for mapping lavfi outputs */
+} StreamMap;
+
+typedef struct {
+    int  file_idx,  stream_idx,  channel_idx; // input
+    int ofile_idx, ostream_idx;               // output
+} AudioChannelMap;
+
+typedef struct OptionsContext {
+    OptionGroup *g;
+
+    /* input/output options */
+    int64_t start_time;
+    int64_t start_time_eof;
+    int seek_timestamp;
+    const char *format;
+
+    SpecifierOpt *codec_names;
+    int        nb_codec_names;
+    SpecifierOpt *audio_channels;
+    int        nb_audio_channels;
+    SpecifierOpt *audio_sample_rate;
+    int        nb_audio_sample_rate;
+    SpecifierOpt *frame_rates;
+    int        nb_frame_rates;
+    SpecifierOpt *frame_sizes;
+    int        nb_frame_sizes;
+    SpecifierOpt *frame_pix_fmts;
+    int        nb_frame_pix_fmts;
+
+    /* input options */
+    int64_t input_ts_offset;
+    int loop;
+    int rate_emu;
+    int accurate_seek;
+    int thread_queue_size;
+
+    SpecifierOpt *ts_scale;
+    int        nb_ts_scale;
+    SpecifierOpt *dump_attachment;
+    int        nb_dump_attachment;
+    SpecifierOpt *hwaccels;
+    int        nb_hwaccels;
+    SpecifierOpt *hwaccel_devices;
+    int        nb_hwaccel_devices;
+    SpecifierOpt *hwaccel_output_formats;
+    int        nb_hwaccel_output_formats;
+    SpecifierOpt *autorotate;
+    int        nb_autorotate;
+
+    /* output options */
+    StreamMap *stream_maps;
+    int     nb_stream_maps;
+    AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
+    int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
+    int metadata_global_manual;
+    int metadata_streams_manual;
+    int metadata_chapters_manual;
+    const char **attachments;
+    int       nb_attachments;
+
+    int chapters_input_file;
+
+    int64_t recording_time;
+    int64_t stop_time;
+    uint64_t limit_filesize;
+    float mux_preload;
+    float mux_max_delay;
+    int shortest;
+
+    int video_disable;
+    int audio_disable;
+    int subtitle_disable;
+    int data_disable;
+
+    /* indexed by output file stream index */
+    int   *streamid_map;
+    int nb_streamid_map;
+
+    SpecifierOpt *metadata;
+    int        nb_metadata;
+    SpecifierOpt *max_frames;
+    int        nb_max_frames;
+    SpecifierOpt *bitstream_filters;
+    int        nb_bitstream_filters;
+    SpecifierOpt *codec_tags;
+    int        nb_codec_tags;
+    SpecifierOpt *sample_fmts;
+    int        nb_sample_fmts;
+    SpecifierOpt *qscale;
+    int        nb_qscale;
+    SpecifierOpt *forced_key_frames;
+    int        nb_forced_key_frames;
+    SpecifierOpt *force_fps;
+    int        nb_force_fps;
+    SpecifierOpt *frame_aspect_ratios;
+    int        nb_frame_aspect_ratios;
+    SpecifierOpt *rc_overrides;
+    int        nb_rc_overrides;
+    SpecifierOpt *intra_matrices;
+    int        nb_intra_matrices;
+    SpecifierOpt *inter_matrices;
+    int        nb_inter_matrices;
+    SpecifierOpt *chroma_intra_matrices;
+    int        nb_chroma_intra_matrices;
+    SpecifierOpt *top_field_first;
+    int        nb_top_field_first;
+    SpecifierOpt *metadata_map;
+    int        nb_metadata_map;
+    SpecifierOpt *presets;
+    int        nb_presets;
+    SpecifierOpt *copy_initial_nonkeyframes;
+    int        nb_copy_initial_nonkeyframes;
+    SpecifierOpt *copy_prior_start;
+    int        nb_copy_prior_start;
+    SpecifierOpt *filters;
+    int        nb_filters;
+    SpecifierOpt *filter_scripts;
+    int        nb_filter_scripts;
+    SpecifierOpt *reinit_filters;
+    int        nb_reinit_filters;
+    SpecifierOpt *fix_sub_duration;
+    int        nb_fix_sub_duration;
+    SpecifierOpt *canvas_sizes;
+    int        nb_canvas_sizes;
+    SpecifierOpt *pass;
+    int        nb_pass;
+    SpecifierOpt *passlogfiles;
+    int        nb_passlogfiles;
+    SpecifierOpt *max_muxing_queue_size;
+    int        nb_max_muxing_queue_size;
+    SpecifierOpt *guess_layout_max;
+    int        nb_guess_layout_max;
+    SpecifierOpt *apad;
+    int        nb_apad;
+    SpecifierOpt *discard;
+    int        nb_discard;
+    SpecifierOpt *disposition;
+    int        nb_disposition;
+    SpecifierOpt *program;
+    int        nb_program;
+    SpecifierOpt *time_bases;
+    int        nb_time_bases;
+    SpecifierOpt *enc_time_bases;
+    int        nb_enc_time_bases;
+} OptionsContext;
+
+typedef struct InputFilter {
+    AVFilterContext    *filter;
+    struct InputStream *ist;
+    struct FilterGraph *graph;
+    uint8_t            *name;
+    enum AVMediaType    type;   // AVMEDIA_TYPE_SUBTITLE for sub2video
+
+    AVFifoBuffer *frame_queue;
+
+    // parameters configured for this input
+    int format;
+
+    int width, height;
+    AVRational sample_aspect_ratio;
+
+    int sample_rate;
+    int channels;
+    uint64_t channel_layout;
+
+    AVBufferRef *hw_frames_ctx;
+
+    int eof;
+} InputFilter;
+
+typedef struct OutputFilter {
+    AVFilterContext     *filter;
+    struct OutputStream *ost;
+    struct FilterGraph  *graph;
+    uint8_t             *name;
+
+    /* temporary storage until stream maps are processed */
+    AVFilterInOut       *out_tmp;
+    enum AVMediaType     type;
+
+    /* desired output stream properties */
+    int width, height;
+    AVRational frame_rate;
+    int format;
+    int sample_rate;
+    uint64_t channel_layout;
+
+    // those are only set if no format is specified and the encoder gives us multiple options
+    int *formats;
+    uint64_t *channel_layouts;
+    int *sample_rates;
+} OutputFilter;
+
+typedef struct FilterGraph {
+    int            index;
+    const char    *graph_desc;
+
+    AVFilterGraph *graph;
+    int reconfiguration;
+
+    InputFilter   **inputs;
+    int          nb_inputs;
+    OutputFilter **outputs;
+    int         nb_outputs;
+} FilterGraph;
+
+typedef struct InputStream {
+    int file_index;
+    AVStream *st;
+    int discard;             /* true if stream data should be discarded */
+    int user_set_discard;
+    int decoding_needed;     /* non zero if the packets must be decoded in 'raw_fifo', see DECODING_FOR_* */
+#define DECODING_FOR_OST    1
+#define DECODING_FOR_FILTER 2
+
+    AVCodecContext *dec_ctx;
+    AVCodec *dec;
+    AVFrame *decoded_frame;
+    AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
+
+    int64_t       start;     /* time when read started */
+    /* predicted dts of the next packet read for this stream or (when there are
+     * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */
+    int64_t       next_dts;
+    int64_t       dts;       ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
+
+    int64_t       next_pts;  ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
+    int64_t       pts;       ///< current pts of the decoded frame  (in AV_TIME_BASE units)
+    int           wrap_correction_done;
+
+    int64_t filter_in_rescale_delta_last;
+
+    int64_t min_pts; /* pts with the smallest value in a current stream */
+    int64_t max_pts; /* pts with the higher value in a current stream */
+
+    // when forcing constant input framerate through -r,
+    // this contains the pts that will be given to the next decoded frame
+    int64_t cfr_next_pts;
+
+    int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */
+
+    double ts_scale;
+    int saw_first_ts;
+    AVDictionary *decoder_opts;
+    AVRational framerate;               /* framerate forced with -r */
+    int top_field_first;
+    int guess_layout_max;
+
+    int autorotate;
+
+    int fix_sub_duration;
+    struct { /* previous decoded subtitle and related variables */
+        int got_output;
+        int ret;
+        AVSubtitle subtitle;
+    } prev_sub;
+
+    struct sub2video {
+        int64_t last_pts;
+        int64_t end_pts;
+        AVFifoBuffer *sub_queue;    ///< queue of AVSubtitle* before filter init
+        AVFrame *frame;
+        int w, h;
+    } sub2video;
+
+    int dr1;
+
+    /* decoded data from this stream goes into all those filters
+     * currently video and audio only */
+    InputFilter **filters;
+    int        nb_filters;
+
+    int reinit_filters;
+
+    /* hwaccel options */
+    enum HWAccelID hwaccel_id;
+    char  *hwaccel_device;
+    enum AVPixelFormat hwaccel_output_format;
+
+    /* hwaccel context */
+    enum HWAccelID active_hwaccel_id;
+    void  *hwaccel_ctx;
+    void (*hwaccel_uninit)(AVCodecContext *s);
+    int  (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags);
+    int  (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame);
+    enum AVPixelFormat hwaccel_pix_fmt;
+    enum AVPixelFormat hwaccel_retrieved_pix_fmt;
+    AVBufferRef *hw_frames_ctx;
+
+    /* stats */
+    // combined size of all the packets read
+    uint64_t data_size;
+    /* number of packets successfully read for this stream */
+    uint64_t nb_packets;
+    // number of frames/samples retrieved from the decoder
+    uint64_t frames_decoded;
+    uint64_t samples_decoded;
+
+    int64_t *dts_buffer;
+    int nb_dts_buffer;
+
+    int got_output;
+} InputStream;
+
+typedef struct InputFile {
+    AVFormatContext *ctx;
+    int eof_reached;      /* true if eof reached */
+    int eagain;           /* true if last read attempt returned EAGAIN */
+    int ist_index;        /* index of first stream in input_streams */
+    int loop;             /* set number of times input stream should be looped */
+    int64_t duration;     /* actual duration of the longest stream in a file
+                             at the moment when looping happens */
+    AVRational time_base; /* time base of the duration */
+    int64_t input_ts_offset;
+
+    int64_t ts_offset;
+    int64_t last_ts;
+    int64_t start_time;   /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
+    int seek_timestamp;
+    int64_t recording_time;
+    int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
+                             from ctx.nb_streams if new streams appear during av_read_frame() */
+    int nb_streams_warn;  /* number of streams that the user was warned of */
+    int rate_emu;
+    int accurate_seek;
+
+#if HAVE_PTHREADS
+    AVThreadMessageQueue *in_thread_queue;
+    pthread_t thread;           /* thread reading from this file */
+    int non_blocking;           /* reading packets from the thread should not block */
+    int joined;                 /* the thread has been joined */
+    int thread_queue_size;      /* maximum number of queued packets */
+#endif
+} InputFile;
+
+enum forced_keyframes_const {
+    FKF_N,
+    FKF_N_FORCED,
+    FKF_PREV_FORCED_N,
+    FKF_PREV_FORCED_T,
+    FKF_T,
+    FKF_NB
+};
+
+#define ABORT_ON_FLAG_EMPTY_OUTPUT (1 <<  0)
+
+extern const char *const forced_keyframes_const_names[];
+
+typedef enum {
+    ENCODER_FINISHED = 1,
+    MUXER_FINISHED = 2,
+} OSTFinished ;
+
+typedef struct OutputStream {
+    int file_index;          /* file index */
+    int index;               /* stream index in the output file */
+    int source_index;        /* InputStream index */
+    AVStream *st;            /* stream in the output file */
+    int encoding_needed;     /* true if encoding needed for this stream */
+    int frame_number;
+    /* input pts and corresponding output pts
+       for A/V sync */
+    struct InputStream *sync_ist; /* input stream to sync against */
+    int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
+    /* pts of the first frame encoded for this stream, used for limiting
+     * recording time */
+    int64_t first_pts;
+    /* dts of the last packet sent to the muxer */
+    int64_t last_mux_dts;
+    // the timebase of the packets sent to the muxer
+    AVRational mux_timebase;
+    AVRational enc_timebase;
+
+    int                    nb_bitstream_filters;
+    AVBSFContext            **bsf_ctx;
+
+    AVCodecContext *enc_ctx;
+    AVCodecParameters *ref_par; /* associated input codec parameters with encoders options applied */
+    AVCodec *enc;
+    int64_t max_frames;
+    AVFrame *filtered_frame;
+    AVFrame *last_frame;
+    int last_dropped;
+    int last_nb0_frames[3];
+
+    void  *hwaccel_ctx;
+
+    /* video only */
+    AVRational frame_rate;
+    int is_cfr;
+    int force_fps;
+    int top_field_first;
+    int rotate_overridden;
+    double rotate_override_value;
+
+    AVRational frame_aspect_ratio;
+
+    /* forced key frames */
+    int64_t *forced_kf_pts;
+    int forced_kf_count;
+    int forced_kf_index;
+    char *forced_keyframes;
+    AVExpr *forced_keyframes_pexpr;
+    double forced_keyframes_expr_const_values[FKF_NB];
+
+    /* audio only */
+    int *audio_channels_map;             /* list of the channels id to pick from the source stream */
+    int audio_channels_mapped;           /* number of channels in audio_channels_map */
+
+    char *logfile_prefix;
+    FILE *logfile;
+
+    OutputFilter *filter;
+    char *avfilter;
+    char *filters;         ///< filtergraph associated to the -filter option
+    char *filters_script;  ///< filtergraph script associated to the -filter_script option
+
+    AVDictionary *encoder_opts;
+    AVDictionary *sws_dict;
+    AVDictionary *swr_opts;
+    AVDictionary *resample_opts;
+    char *apad;
+    OSTFinished finished;        /* no more packets should be written for this stream */
+    int unavailable;                     /* true if the steram is unavailable (possibly temporarily) */
+    int stream_copy;
+
+    // init_output_stream() has been called for this stream
+    // The encoder and the bitstream filters have been initialized and the stream
+    // parameters are set in the AVStream.
+    int initialized;
+
+    int inputs_done;
+
+    const char *attachment_filename;
+    int copy_initial_nonkeyframes;
+    int copy_prior_start;
+    char *disposition;
+
+    int keep_pix_fmt;
+
+    AVCodecParserContext *parser;
+    AVCodecContext       *parser_avctx;
+
+    /* stats */
+    // combined size of all the packets written
+    uint64_t data_size;
+    // number of packets send to the muxer
+    uint64_t packets_written;
+    // number of frames/samples sent to the encoder
+    uint64_t frames_encoded;
+    uint64_t samples_encoded;
+
+    /* packet quality factor */
+    int quality;
+
+    int max_muxing_queue_size;
+
+    /* the packets are buffered here until the muxer is ready to be initialized */
+    AVFifoBuffer *muxing_queue;
+
+    /* packet picture type */
+    int pict_type;
+
+    /* frame encode sum of squared error values */
+    int64_t error[4];
+} OutputStream;
+
+typedef struct OutputFile {
+    AVFormatContext *ctx;
+    AVDictionary *opts;
+    int ost_index;       /* index of the first stream in output_streams */
+    int64_t recording_time;  ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
+    int64_t start_time;      ///< start time in microseconds == AV_TIME_BASE units
+    uint64_t limit_filesize; /* filesize limit expressed in bytes */
+
+    int shortest;
+
+    int header_written;
+} OutputFile;
+
+extern InputStream **input_streams;
+extern int        nb_input_streams;
+extern InputFile   **input_files;
+extern int        nb_input_files;
+
+extern OutputStream **output_streams;
+extern int         nb_output_streams;
+extern OutputFile   **output_files;
+extern int         nb_output_files;
+
+extern FilterGraph **filtergraphs;
+extern int        nb_filtergraphs;
+
+extern char *vstats_filename;
+extern char *sdp_filename;
+
+extern float audio_drift_threshold;
+extern float dts_delta_threshold;
+extern float dts_error_threshold;
+
+extern int audio_volume;
+extern int audio_sync_method;
+extern int video_sync_method;
+extern float frame_drop_threshold;
+extern int do_benchmark;
+extern int do_benchmark_all;
+extern int do_deinterlace;
+extern int do_hex_dump;
+extern int do_pkt_dump;
+extern int copy_ts;
+extern int start_at_zero;
+extern int copy_tb;
+extern int debug_ts;
+extern int exit_on_error;
+extern int abort_on_flags;
+extern int print_stats;
+extern int qp_hist;
+extern int stdin_interaction;
+extern int frame_bits_per_raw_sample;
+extern AVIOContext *progress_avio;
+extern float max_error_rate;
+extern char *videotoolbox_pixfmt;
+
+extern int filter_nbthreads;
+extern int filter_complex_nbthreads;
+extern int vstats_version;
+
+extern const AVIOInterruptCB int_cb;
+
+extern const OptionDef options[];
+extern const HWAccel hwaccels[];
+extern int hwaccel_lax_profile_check;
+extern AVBufferRef *hw_device_ctx;
+#if CONFIG_QSV
+extern char *qsv_device;
+#endif
+extern HWDevice *filter_hw_device;
+
+
+void term_init(void);
+void term_exit(void);
+
+void reset_options(OptionsContext *o, int is_input);
+void show_usage(void);
+
+void opt_output_file(void *optctx, const char *filename);
+
+void remove_avoptions(AVDictionary **a, AVDictionary *b);
+void assert_avoptions(AVDictionary *m);
+
+int guess_input_channel_layout(InputStream *ist);
+
+enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *avctx, AVCodec *codec, enum AVPixelFormat target);
+void choose_sample_fmt(AVStream *st, AVCodec *codec);
+
+int configure_filtergraph(FilterGraph *fg);
+int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
+void check_filter_outputs(void);
+int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
+int filtergraph_is_simple(FilterGraph *fg);
+int init_simple_filtergraph(InputStream *ist, OutputStream *ost);
+int init_complex_filtergraph(FilterGraph *fg);
+
+void sub2video_update(InputStream *ist, AVSubtitle *sub);
+
+int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame);
+
+int ffmpeg_parse_options(int argc, char **argv);
+
+int vda_init(AVCodecContext *s);
+int videotoolbox_init(AVCodecContext *s);
+int qsv_init(AVCodecContext *s);
+int cuvid_init(AVCodecContext *s);
+
+HWDevice *hw_device_get_by_name(const char *name);
+int hw_device_init_from_string(const char *arg, HWDevice **dev);
+void hw_device_free_all(void);
+
+int hw_device_setup_for_decode(InputStream *ist);
+int hw_device_setup_for_encode(OutputStream *ost);
+
+int hwaccel_decode_init(AVCodecContext *avctx);
+
+#endif /* FFTOOLS_FFMPEG_H */
diff --git a/fftools/ffmpeg_cuvid.c b/fftools/ffmpeg_cuvid.c
new file mode 100644
index 0000000000..3ff3b40f17
--- /dev/null
+++ b/fftools/ffmpeg_cuvid.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/hwcontext.h"
+#include "libavutil/pixdesc.h"
+
+#include "ffmpeg.h"
+
+static void cuvid_uninit(AVCodecContext *avctx)
+{
+    InputStream *ist = avctx->opaque;
+    av_buffer_unref(&ist->hw_frames_ctx);
+}
+
+int cuvid_init(AVCodecContext *avctx)
+{
+    InputStream *ist = avctx->opaque;
+    AVHWFramesContext *frames_ctx;
+    int ret;
+
+    av_log(avctx, AV_LOG_VERBOSE, "Initializing cuvid hwaccel\n");
+
+    if (!hw_device_ctx) {
+        ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_CUDA,
+                                     ist->hwaccel_device, NULL, 0);
+        if (ret < 0) {
+            av_log(avctx, AV_LOG_ERROR, "Error creating a CUDA device\n");
+            return ret;
+        }
+    }
+
+    av_buffer_unref(&ist->hw_frames_ctx);
+    ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
+    if (!ist->hw_frames_ctx) {
+        av_log(avctx, AV_LOG_ERROR, "Error creating a CUDA frames context\n");
+        return AVERROR(ENOMEM);
+    }
+
+    frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
+
+    frames_ctx->format = AV_PIX_FMT_CUDA;
+    frames_ctx->sw_format = avctx->sw_pix_fmt;
+    frames_ctx->width = avctx->width;
+    frames_ctx->height = avctx->height;
+
+    av_log(avctx, AV_LOG_DEBUG, "Initializing CUDA frames context: sw_format = %s, width = %d, height = %d\n",
+           av_get_pix_fmt_name(frames_ctx->sw_format), frames_ctx->width, frames_ctx->height);
+
+    ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
+    if (ret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Error initializing a CUDA frame pool\n");
+        return ret;
+    }
+
+    ist->hwaccel_uninit = cuvid_uninit;
+
+    return 0;
+}
diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c
new file mode 100644
index 0000000000..aacc185059
--- /dev/null
+++ b/fftools/ffmpeg_filter.c
@@ -0,0 +1,1210 @@
+/*
+ * ffmpeg filter configuration
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+#include "ffmpeg.h"
+
+#include "libavfilter/avfilter.h"
+#include "libavfilter/buffersink.h"
+#include "libavfilter/buffersrc.h"
+
+#include "libavresample/avresample.h"
+
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/bprint.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/display.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/pixfmt.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/samplefmt.h"
+
+static const enum AVPixelFormat *get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[])
+{
+    static const enum AVPixelFormat mjpeg_formats[] =
+        { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
+          AV_PIX_FMT_YUV420P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV444P,
+          AV_PIX_FMT_NONE };
+    static const enum AVPixelFormat ljpeg_formats[] =
+        { AV_PIX_FMT_BGR24   , AV_PIX_FMT_BGRA    , AV_PIX_FMT_BGR0,
+          AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
+          AV_PIX_FMT_YUV420P , AV_PIX_FMT_YUV444P , AV_PIX_FMT_YUV422P,
+          AV_PIX_FMT_NONE};
+
+    if (codec_id == AV_CODEC_ID_MJPEG) {
+        return mjpeg_formats;
+    } else if (codec_id == AV_CODEC_ID_LJPEG) {
+        return ljpeg_formats;
+    } else {
+        return default_formats;
+    }
+}
+
+enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target)
+{
+    if (codec && codec->pix_fmts) {
+        const enum AVPixelFormat *p = codec->pix_fmts;
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
+        int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
+        enum AVPixelFormat best= AV_PIX_FMT_NONE;
+
+        if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
+            p = get_compliance_unofficial_pix_fmts(enc_ctx->codec_id, p);
+        }
+        for (; *p != AV_PIX_FMT_NONE; p++) {
+            best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
+            if (*p == target)
+                break;
+        }
+        if (*p == AV_PIX_FMT_NONE) {
+            if (target != AV_PIX_FMT_NONE)
+                av_log(NULL, AV_LOG_WARNING,
+                       "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
+                       av_get_pix_fmt_name(target),
+                       codec->name,
+                       av_get_pix_fmt_name(best));
+            return best;
+        }
+    }
+    return target;
+}
+
+void choose_sample_fmt(AVStream *st, AVCodec *codec)
+{
+    if (codec && codec->sample_fmts) {
+        const enum AVSampleFormat *p = codec->sample_fmts;
+        for (; *p != -1; p++) {
+            if (*p == st->codecpar->format)
+                break;
+        }
+        if (*p == -1) {
+            if((codec->capabilities & AV_CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codecpar->format) > av_get_sample_fmt_name(codec->sample_fmts[0]))
+                av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
+            if(av_get_sample_fmt_name(st->codecpar->format))
+            av_log(NULL, AV_LOG_WARNING,
+                   "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
+                   av_get_sample_fmt_name(st->codecpar->format),
+                   codec->name,
+                   av_get_sample_fmt_name(codec->sample_fmts[0]));
+            st->codecpar->format = codec->sample_fmts[0];
+        }
+    }
+}
+
+static char *choose_pix_fmts(OutputFilter *ofilter)
+{
+    OutputStream *ost = ofilter->ost;
+    AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
+    if (strict_dict)
+        // used by choose_pixel_fmt() and below
+        av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
+
+     if (ost->keep_pix_fmt) {
+        avfilter_graph_set_auto_convert(ofilter->graph->graph,
+                                            AVFILTER_AUTO_CONVERT_NONE);
+        if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
+            return NULL;
+        return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt));
+    }
+    if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
+        return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
+    } else if (ost->enc && ost->enc->pix_fmts) {
+        const enum AVPixelFormat *p;
+        AVIOContext *s = NULL;
+        uint8_t *ret;
+        int len;
+
+        if (avio_open_dyn_buf(&s) < 0)
+            exit_program(1);
+
+        p = ost->enc->pix_fmts;
+        if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
+            p = get_compliance_unofficial_pix_fmts(ost->enc_ctx->codec_id, p);
+        }
+
+        for (; *p != AV_PIX_FMT_NONE; p++) {
+            const char *name = av_get_pix_fmt_name(*p);
+            avio_printf(s, "%s|", name);
+        }
+        len = avio_close_dyn_buf(s, &ret);
+        ret[len - 1] = 0;
+        return ret;
+    } else
+        return NULL;
+}
+
+/* Define a function for building a string containing a list of
+ * allowed formats. */
+#define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name)   \
+static char *choose_ ## suffix (OutputFilter *ofilter)                         \
+{                                                                              \
+    if (ofilter->var != none) {                                                \
+        get_name(ofilter->var);                                                \
+        return av_strdup(name);                                                \
+    } else if (ofilter->supported_list) {                                      \
+        const type *p;                                                         \
+        AVIOContext *s = NULL;                                                 \
+        uint8_t *ret;                                                          \
+        int len;                                                               \
+                                                                               \
+        if (avio_open_dyn_buf(&s) < 0)                                         \
+            exit_program(1);                                                           \
+                                                                               \
+        for (p = ofilter->supported_list; *p != none; p++) {                   \
+            get_name(*p);                                                      \
+            avio_printf(s, "%s|", name);                                       \
+        }                                                                      \
+        len = avio_close_dyn_buf(s, &ret);                                     \
+        ret[len - 1] = 0;                                                      \
+        return ret;                                                            \
+    } else                                                                     \
+        return NULL;                                                           \
+}
+
+//DEF_CHOOSE_FORMAT(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
+//                  GET_PIX_FMT_NAME)
+
+DEF_CHOOSE_FORMAT(sample_fmts, enum AVSampleFormat, format, formats,
+                  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
+
+DEF_CHOOSE_FORMAT(sample_rates, int, sample_rate, sample_rates, 0,
+                  GET_SAMPLE_RATE_NAME)
+
+DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
+                  GET_CH_LAYOUT_NAME)
+
+int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
+{
+    FilterGraph *fg = av_mallocz(sizeof(*fg));
+
+    if (!fg)
+        exit_program(1);
+    fg->index = nb_filtergraphs;
+
+    GROW_ARRAY(fg->outputs, fg->nb_outputs);
+    if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
+        exit_program(1);
+    fg->outputs[0]->ost   = ost;
+    fg->outputs[0]->graph = fg;
+    fg->outputs[0]->format = -1;
+
+    ost->filter = fg->outputs[0];
+
+    GROW_ARRAY(fg->inputs, fg->nb_inputs);
+    if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
+        exit_program(1);
+    fg->inputs[0]->ist   = ist;
+    fg->inputs[0]->graph = fg;
+    fg->inputs[0]->format = -1;
+
+    fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
+    if (!fg->inputs[0]->frame_queue)
+        exit_program(1);
+
+    GROW_ARRAY(ist->filters, ist->nb_filters);
+    ist->filters[ist->nb_filters - 1] = fg->inputs[0];
+
+    GROW_ARRAY(filtergraphs, nb_filtergraphs);
+    filtergraphs[nb_filtergraphs - 1] = fg;
+
+    return 0;
+}
+
+static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
+{
+    AVFilterContext *ctx = inout->filter_ctx;
+    AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;
+    int       nb_pads = in ? ctx->nb_inputs   : ctx->nb_outputs;
+    AVIOContext *pb;
+    uint8_t *res = NULL;
+
+    if (avio_open_dyn_buf(&pb) < 0)
+        exit_program(1);
+
+    avio_printf(pb, "%s", ctx->filter->name);
+    if (nb_pads > 1)
+        avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));
+    avio_w8(pb, 0);
+    avio_close_dyn_buf(pb, &res);
+    return res;
+}
+
+static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
+{
+    InputStream *ist = NULL;
+    enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
+    int i;
+
+    // TODO: support other filter types
+    if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
+        av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
+               "currently.\n");
+        exit_program(1);
+    }
+
+    if (in->name) {
+        AVFormatContext *s;
+        AVStream       *st = NULL;
+        char *p;
+        int file_idx = strtol(in->name, &p, 0);
+
+        if (file_idx < 0 || file_idx >= nb_input_files) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
+                   file_idx, fg->graph_desc);
+            exit_program(1);
+        }
+        s = input_files[file_idx]->ctx;
+
+        for (i = 0; i < s->nb_streams; i++) {
+            enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type;
+            if (stream_type != type &&
+                !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
+                  type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
+                continue;
+            if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
+                st = s->streams[i];
+                break;
+            }
+        }
+        if (!st) {
+            av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
+                   "matches no streams.\n", p, fg->graph_desc);
+            exit_program(1);
+        }
+        ist = input_streams[input_files[file_idx]->ist_index + st->index];
+    } else {
+        /* find the first unused stream of corresponding type */
+        for (i = 0; i < nb_input_streams; i++) {
+            ist = input_streams[i];
+            if (ist->dec_ctx->codec_type == type && ist->discard)
+                break;
+        }
+        if (i == nb_input_streams) {
+            av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
+                   "unlabeled input pad %d on filter %s\n", in->pad_idx,
+                   in->filter_ctx->name);
+            exit_program(1);
+        }
+    }
+    av_assert0(ist);
+
+    ist->discard         = 0;
+    ist->decoding_needed |= DECODING_FOR_FILTER;
+    ist->st->discard = AVDISCARD_NONE;
+
+    GROW_ARRAY(fg->inputs, fg->nb_inputs);
+    if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
+        exit_program(1);
+    fg->inputs[fg->nb_inputs - 1]->ist   = ist;
+    fg->inputs[fg->nb_inputs - 1]->graph = fg;
+    fg->inputs[fg->nb_inputs - 1]->format = -1;
+    fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
+    fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
+
+    fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
+    if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
+        exit_program(1);
+
+    GROW_ARRAY(ist->filters, ist->nb_filters);
+    ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
+}
+
+int init_complex_filtergraph(FilterGraph *fg)
+{
+    AVFilterInOut *inputs, *outputs, *cur;
+    AVFilterGraph *graph;
+    int ret = 0;
+
+    /* this graph is only used for determining the kinds of inputs
+     * and outputs we have, and is discarded on exit from this function */
+    graph = avfilter_graph_alloc();
+    if (!graph)
+        return AVERROR(ENOMEM);
+
+    ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
+    if (ret < 0)
+        goto fail;
+
+    for (cur = inputs; cur; cur = cur->next)
+        init_input_filter(fg, cur);
+
+    for (cur = outputs; cur;) {
+        GROW_ARRAY(fg->outputs, fg->nb_outputs);
+        fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
+        if (!fg->outputs[fg->nb_outputs - 1])
+            exit_program(1);
+
+        fg->outputs[fg->nb_outputs - 1]->graph   = fg;
+        fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
+        fg->outputs[fg->nb_outputs - 1]->type    = avfilter_pad_get_type(cur->filter_ctx->output_pads,
+                                                                         cur->pad_idx);
+        fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
+        cur = cur->next;
+        fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
+    }
+
+fail:
+    avfilter_inout_free(&inputs);
+    avfilter_graph_free(&graph);
+    return ret;
+}
+
+static int insert_trim(int64_t start_time, int64_t duration,
+                       AVFilterContext **last_filter, int *pad_idx,
+                       const char *filter_name)
+{
+    AVFilterGraph *graph = (*last_filter)->graph;
+    AVFilterContext *ctx;
+    const AVFilter *trim;
+    enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
+    const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
+    int ret = 0;
+
+    if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
+        return 0;
+
+    trim = avfilter_get_by_name(name);
+    if (!trim) {
+        av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
+               "recording time.\n", name);
+        return AVERROR_FILTER_NOT_FOUND;
+    }
+
+    ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
+    if (!ctx)
+        return AVERROR(ENOMEM);
+
+    if (duration != INT64_MAX) {
+        ret = av_opt_set_int(ctx, "durationi", duration,
+                                AV_OPT_SEARCH_CHILDREN);
+    }
+    if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
+        ret = av_opt_set_int(ctx, "starti", start_time,
+                                AV_OPT_SEARCH_CHILDREN);
+    }
+    if (ret < 0) {
+        av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
+        return ret;
+    }
+
+    ret = avfilter_init_str(ctx, NULL);
+    if (ret < 0)
+        return ret;
+
+    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
+    if (ret < 0)
+        return ret;
+
+    *last_filter = ctx;
+    *pad_idx     = 0;
+    return 0;
+}
+
+static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
+                         const char *filter_name, const char *args)
+{
+    AVFilterGraph *graph = (*last_filter)->graph;
+    AVFilterContext *ctx;
+    int ret;
+
+    ret = avfilter_graph_create_filter(&ctx,
+                                       avfilter_get_by_name(filter_name),
+                                       filter_name, args, NULL, graph);
+    if (ret < 0)
+        return ret;
+
+    ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
+    if (ret < 0)
+        return ret;
+
+    *last_filter = ctx;
+    *pad_idx     = 0;
+    return 0;
+}
+
+static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
+{
+    char *pix_fmts;
+    OutputStream *ost = ofilter->ost;
+    OutputFile    *of = output_files[ost->file_index];
+    AVFilterContext *last_filter = out->filter_ctx;
+    int pad_idx = out->pad_idx;
+    int ret;
+    char name[255];
+
+    snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
+    ret = avfilter_graph_create_filter(&ofilter->filter,
+                                       avfilter_get_by_name("buffersink"),
+                                       name, NULL, NULL, fg->graph);
+
+    if (ret < 0)
+        return ret;
+
+    if (ofilter->width || ofilter->height) {
+        char args[255];
+        AVFilterContext *filter;
+        AVDictionaryEntry *e = NULL;
+
+        snprintf(args, sizeof(args), "%d:%d",
+                 ofilter->width, ofilter->height);
+
+        while ((e = av_dict_get(ost->sws_dict, "", e,
+                                AV_DICT_IGNORE_SUFFIX))) {
+            av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
+        }
+
+        snprintf(name, sizeof(name), "scaler_out_%d_%d",
+                 ost->file_index, ost->index);
+        if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
+                                                name, args, NULL, fg->graph)) < 0)
+            return ret;
+        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
+            return ret;
+
+        last_filter = filter;
+        pad_idx = 0;
+    }
+
+    if ((pix_fmts = choose_pix_fmts(ofilter))) {
+        AVFilterContext *filter;
+        snprintf(name, sizeof(name), "format_out_%d_%d",
+                 ost->file_index, ost->index);
+        ret = avfilter_graph_create_filter(&filter,
+                                           avfilter_get_by_name("format"),
+                                           "format", pix_fmts, NULL, fg->graph);
+        av_freep(&pix_fmts);
+        if (ret < 0)
+            return ret;
+        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
+            return ret;
+
+        last_filter = filter;
+        pad_idx     = 0;
+    }
+
+    if (ost->frame_rate.num && 0) {
+        AVFilterContext *fps;
+        char args[255];
+
+        snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
+                 ost->frame_rate.den);
+        snprintf(name, sizeof(name), "fps_out_%d_%d",
+                 ost->file_index, ost->index);
+        ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
+                                           name, args, NULL, fg->graph);
+        if (ret < 0)
+            return ret;
+
+        ret = avfilter_link(last_filter, pad_idx, fps, 0);
+        if (ret < 0)
+            return ret;
+        last_filter = fps;
+        pad_idx = 0;
+    }
+
+    snprintf(name, sizeof(name), "trim_out_%d_%d",
+             ost->file_index, ost->index);
+    ret = insert_trim(of->start_time, of->recording_time,
+                      &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+
+    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
+        return ret;
+
+    return 0;
+}
+
+static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
+{
+    OutputStream *ost = ofilter->ost;
+    OutputFile    *of = output_files[ost->file_index];
+    AVCodecContext *codec  = ost->enc_ctx;
+    AVFilterContext *last_filter = out->filter_ctx;
+    int pad_idx = out->pad_idx;
+    char *sample_fmts, *sample_rates, *channel_layouts;
+    char name[255];
+    int ret;
+
+    snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
+    ret = avfilter_graph_create_filter(&ofilter->filter,
+                                       avfilter_get_by_name("abuffersink"),
+                                       name, NULL, NULL, fg->graph);
+    if (ret < 0)
+        return ret;
+    if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
+        return ret;
+
+#define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
+    AVFilterContext *filt_ctx;                                              \
+                                                                            \
+    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
+           "similarly to -af " filter_name "=%s.\n", arg);                  \
+                                                                            \
+    ret = avfilter_graph_create_filter(&filt_ctx,                           \
+                                       avfilter_get_by_name(filter_name),   \
+                                       filter_name, arg, NULL, fg->graph);  \
+    if (ret < 0)                                                            \
+        return ret;                                                         \
+                                                                            \
+    ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
+    if (ret < 0)                                                            \
+        return ret;                                                         \
+                                                                            \
+    last_filter = filt_ctx;                                                 \
+    pad_idx = 0;                                                            \
+} while (0)
+    if (ost->audio_channels_mapped) {
+        int i;
+        AVBPrint pan_buf;
+        av_bprint_init(&pan_buf, 256, 8192);
+        av_bprintf(&pan_buf, "0x%"PRIx64,
+                   av_get_default_channel_layout(ost->audio_channels_mapped));
+        for (i = 0; i < ost->audio_channels_mapped; i++)
+            if (ost->audio_channels_map[i] != -1)
+                av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
+
+        AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
+        av_bprint_finalize(&pan_buf, NULL);
+    }
+
+    if (codec->channels && !codec->channel_layout)
+        codec->channel_layout = av_get_default_channel_layout(codec->channels);
+
+    sample_fmts     = choose_sample_fmts(ofilter);
+    sample_rates    = choose_sample_rates(ofilter);
+    channel_layouts = choose_channel_layouts(ofilter);
+    if (sample_fmts || sample_rates || channel_layouts) {
+        AVFilterContext *format;
+        char args[256];
+        args[0] = 0;
+
+        if (sample_fmts)
+            av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
+                            sample_fmts);
+        if (sample_rates)
+            av_strlcatf(args, sizeof(args), "sample_rates=%s:",
+                            sample_rates);
+        if (channel_layouts)
+            av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
+                            channel_layouts);
+
+        av_freep(&sample_fmts);
+        av_freep(&sample_rates);
+        av_freep(&channel_layouts);
+
+        snprintf(name, sizeof(name), "format_out_%d_%d",
+                 ost->file_index, ost->index);
+        ret = avfilter_graph_create_filter(&format,
+                                           avfilter_get_by_name("aformat"),
+                                           name, args, NULL, fg->graph);
+        if (ret < 0)
+            return ret;
+
+        ret = avfilter_link(last_filter, pad_idx, format, 0);
+        if (ret < 0)
+            return ret;
+
+        last_filter = format;
+        pad_idx = 0;
+    }
+
+    if (audio_volume != 256 && 0) {
+        char args[256];
+
+        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
+        AUTO_INSERT_FILTER("-vol", "volume", args);
+    }
+
+    if (ost->apad && of->shortest) {
+        char args[256];
+        int i;
+
+        for (i=0; i<of->ctx->nb_streams; i++)
+            if (of->ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+                break;
+
+        if (i<of->ctx->nb_streams) {
+            snprintf(args, sizeof(args), "%s", ost->apad);
+            AUTO_INSERT_FILTER("-apad", "apad", args);
+        }
+    }
+
+    snprintf(name, sizeof(name), "trim for output stream %d:%d",
+             ost->file_index, ost->index);
+    ret = insert_trim(of->start_time, of->recording_time,
+                      &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
+        return ret;
+
+    return 0;
+}
+
+int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
+{
+    if (!ofilter->ost) {
+        av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", ofilter->name);
+        exit_program(1);
+    }
+
+    switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
+    case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
+    case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
+    default: av_assert0(0);
+    }
+}
+
+void check_filter_outputs(void)
+{
+    int i;
+    for (i = 0; i < nb_filtergraphs; i++) {
+        int n;
+        for (n = 0; n < filtergraphs[i]->nb_outputs; n++) {
+            OutputFilter *output = filtergraphs[i]->outputs[n];
+            if (!output->ost) {
+                av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", output->name);
+                exit_program(1);
+            }
+        }
+    }
+}
+
+static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
+{
+    AVFormatContext *avf = input_files[ist->file_index]->ctx;
+    int i, w, h;
+
+    /* Compute the size of the canvas for the subtitles stream.
+       If the subtitles codecpar has set a size, use it. Otherwise use the
+       maximum dimensions of the video streams in the same file. */
+    w = ifilter->width;
+    h = ifilter->height;
+    if (!(w && h)) {
+        for (i = 0; i < avf->nb_streams; i++) {
+            if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+                w = FFMAX(w, avf->streams[i]->codecpar->width);
+                h = FFMAX(h, avf->streams[i]->codecpar->height);
+            }
+        }
+        if (!(w && h)) {
+            w = FFMAX(w, 720);
+            h = FFMAX(h, 576);
+        }
+        av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
+    }
+    ist->sub2video.w = ifilter->width  = w;
+    ist->sub2video.h = ifilter->height = h;
+
+    ifilter->width  = ist->dec_ctx->width  ? ist->dec_ctx->width  : ist->sub2video.w;
+    ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
+
+    /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
+       palettes for all rectangles are identical or compatible */
+    ifilter->format = AV_PIX_FMT_RGB32;
+
+    ist->sub2video.frame = av_frame_alloc();
+    if (!ist->sub2video.frame)
+        return AVERROR(ENOMEM);
+    ist->sub2video.last_pts = INT64_MIN;
+    return 0;
+}
+
+static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
+                                        AVFilterInOut *in)
+{
+    AVFilterContext *last_filter;
+    const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
+    InputStream *ist = ifilter->ist;
+    InputFile     *f = input_files[ist->file_index];
+    AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
+                                         ist->st->time_base;
+    AVRational fr = ist->framerate;
+    AVRational sar;
+    AVBPrint args;
+    char name[255];
+    int ret, pad_idx = 0;
+    int64_t tsoffset = 0;
+    AVBufferSrcParameters *par = av_buffersrc_parameters_alloc();
+
+    if (!par)
+        return AVERROR(ENOMEM);
+    memset(par, 0, sizeof(*par));
+    par->format = AV_PIX_FMT_NONE;
+
+    if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
+        av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
+
+    if (!fr.num)
+        fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
+
+    if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
+        ret = sub2video_prepare(ist, ifilter);
+        if (ret < 0)
+            goto fail;
+    }
+
+    sar = ifilter->sample_aspect_ratio;
+    if(!sar.den)
+        sar = (AVRational){0,1};
+    av_bprint_init(&args, 0, 1);
+    av_bprintf(&args,
+             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
+             "pixel_aspect=%d/%d:sws_param=flags=%d",
+             ifilter->width, ifilter->height, ifilter->format,
+             tb.num, tb.den, sar.num, sar.den,
+             SWS_BILINEAR + ((ist->dec_ctx->flags&AV_CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
+    if (fr.num && fr.den)
+        av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
+    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
+             ist->file_index, ist->st->index);
+
+
+    if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
+                                            args.str, NULL, fg->graph)) < 0)
+        goto fail;
+    par->hw_frames_ctx = ifilter->hw_frames_ctx;
+    ret = av_buffersrc_parameters_set(ifilter->filter, par);
+    if (ret < 0)
+        goto fail;
+    av_freep(&par);
+    last_filter = ifilter->filter;
+
+    if (ist->autorotate) {
+        double theta = get_rotation(ist->st);
+
+        if (fabs(theta - 90) < 1.0) {
+            ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
+        } else if (fabs(theta - 180) < 1.0) {
+            ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
+            if (ret < 0)
+                return ret;
+            ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
+        } else if (fabs(theta - 270) < 1.0) {
+            ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
+        } else if (fabs(theta) > 1.0) {
+            char rotate_buf[64];
+            snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
+            ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
+        }
+        if (ret < 0)
+            return ret;
+    }
+
+    if (do_deinterlace) {
+        AVFilterContext *yadif;
+
+        snprintf(name, sizeof(name), "deinterlace_in_%d_%d",
+                 ist->file_index, ist->st->index);
+        if ((ret = avfilter_graph_create_filter(&yadif,
+                                                avfilter_get_by_name("yadif"),
+                                                name, "", NULL,
+                                                fg->graph)) < 0)
+            return ret;
+
+        if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
+            return ret;
+
+        last_filter = yadif;
+    }
+
+    snprintf(name, sizeof(name), "trim_in_%d_%d",
+             ist->file_index, ist->st->index);
+    if (copy_ts) {
+        tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
+        if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
+            tsoffset += f->ctx->start_time;
+    }
+    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
+                      AV_NOPTS_VALUE : tsoffset, f->recording_time,
+                      &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
+        return ret;
+    return 0;
+fail:
+    av_freep(&par);
+
+    return ret;
+}
+
+static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
+                                        AVFilterInOut *in)
+{
+    AVFilterContext *last_filter;
+    const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
+    InputStream *ist = ifilter->ist;
+    InputFile     *f = input_files[ist->file_index];
+    AVBPrint args;
+    char name[255];
+    int ret, pad_idx = 0;
+    int64_t tsoffset = 0;
+
+    if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
+        av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
+        return AVERROR(EINVAL);
+    }
+
+    av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
+    av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
+             1, ifilter->sample_rate,
+             ifilter->sample_rate,
+             av_get_sample_fmt_name(ifilter->format));
+    if (ifilter->channel_layout)
+        av_bprintf(&args, ":channel_layout=0x%"PRIx64,
+                   ifilter->channel_layout);
+    else
+        av_bprintf(&args, ":channels=%d", ifilter->channels);
+    snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
+             ist->file_index, ist->st->index);
+
+    if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
+                                            name, args.str, NULL,
+                                            fg->graph)) < 0)
+        return ret;
+    last_filter = ifilter->filter;
+
+#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
+    AVFilterContext *filt_ctx;                                              \
+                                                                            \
+    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
+           "similarly to -af " filter_name "=%s.\n", arg);                  \
+                                                                            \
+    snprintf(name, sizeof(name), "graph_%d_%s_in_%d_%d",      \
+                fg->index, filter_name, ist->file_index, ist->st->index);   \
+    ret = avfilter_graph_create_filter(&filt_ctx,                           \
+                                       avfilter_get_by_name(filter_name),   \
+                                       name, arg, NULL, fg->graph);         \
+    if (ret < 0)                                                            \
+        return ret;                                                         \
+                                                                            \
+    ret = avfilter_link(last_filter, 0, filt_ctx, 0);                       \
+    if (ret < 0)                                                            \
+        return ret;                                                         \
+                                                                            \
+    last_filter = filt_ctx;                                                 \
+} while (0)
+
+    if (audio_sync_method > 0) {
+        char args[256] = {0};
+
+        av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
+        if (audio_drift_threshold != 0.1)
+            av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
+        if (!fg->reconfiguration)
+            av_strlcatf(args, sizeof(args), ":first_pts=0");
+        AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
+    }
+
+//     if (ost->audio_channels_mapped) {
+//         int i;
+//         AVBPrint pan_buf;
+//         av_bprint_init(&pan_buf, 256, 8192);
+//         av_bprintf(&pan_buf, "0x%"PRIx64,
+//                    av_get_default_channel_layout(ost->audio_channels_mapped));
+//         for (i = 0; i < ost->audio_channels_mapped; i++)
+//             if (ost->audio_channels_map[i] != -1)
+//                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
+//         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
+//         av_bprint_finalize(&pan_buf, NULL);
+//     }
+
+    if (audio_volume != 256) {
+        char args[256];
+
+        av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
+               "audio filter instead.\n");
+
+        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
+        AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
+    }
+
+    snprintf(name, sizeof(name), "trim for input stream %d:%d",
+             ist->file_index, ist->st->index);
+    if (copy_ts) {
+        tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
+        if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
+            tsoffset += f->ctx->start_time;
+    }
+    ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
+                      AV_NOPTS_VALUE : tsoffset, f->recording_time,
+                      &last_filter, &pad_idx, name);
+    if (ret < 0)
+        return ret;
+
+    if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
+        return ret;
+
+    return 0;
+}
+
+static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
+                                  AVFilterInOut *in)
+{
+    if (!ifilter->ist->dec) {
+        av_log(NULL, AV_LOG_ERROR,
+               "No decoder for stream #%d:%d, filtering impossible\n",
+               ifilter->ist->file_index, ifilter->ist->st->index);
+        return AVERROR_DECODER_NOT_FOUND;
+    }
+    switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
+    case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
+    case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
+    default: av_assert0(0);
+    }
+}
+
+static void cleanup_filtergraph(FilterGraph *fg)
+{
+    int i;
+    for (i = 0; i < fg->nb_outputs; i++)
+        fg->outputs[i]->filter = (AVFilterContext *)NULL;
+    for (i = 0; i < fg->nb_inputs; i++)
+        fg->inputs[i]->filter = (AVFilterContext *)NULL;
+    avfilter_graph_free(&fg->graph);
+}
+
+int configure_filtergraph(FilterGraph *fg)
+{
+    AVFilterInOut *inputs, *outputs, *cur;
+    int ret, i, simple = filtergraph_is_simple(fg);
+    const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
+                                      fg->graph_desc;
+
+    cleanup_filtergraph(fg);
+    if (!(fg->graph = avfilter_graph_alloc()))
+        return AVERROR(ENOMEM);
+
+    if (simple) {
+        OutputStream *ost = fg->outputs[0]->ost;
+        char args[512];
+        AVDictionaryEntry *e = NULL;
+
+        fg->graph->nb_threads = filter_nbthreads;
+
+        args[0] = 0;
+        while ((e = av_dict_get(ost->sws_dict, "", e,
+                                AV_DICT_IGNORE_SUFFIX))) {
+            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
+        }
+        if (strlen(args))
+            args[strlen(args)-1] = 0;
+        fg->graph->scale_sws_opts = av_strdup(args);
+
+        args[0] = 0;
+        while ((e = av_dict_get(ost->swr_opts, "", e,
+                                AV_DICT_IGNORE_SUFFIX))) {
+            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
+        }
+        if (strlen(args))
+            args[strlen(args)-1] = 0;
+        av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
+
+        args[0] = '\0';
+        while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
+                                AV_DICT_IGNORE_SUFFIX))) {
+            av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
+        }
+        if (strlen(args))
+            args[strlen(args) - 1] = '\0';
+
+        e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
+        if (e)
+            av_opt_set(fg->graph, "threads", e->value, 0);
+    } else {
+        fg->graph->nb_threads = filter_complex_nbthreads;
+    }
+
+    if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
+        goto fail;
+
+    if (filter_hw_device || hw_device_ctx) {
+        AVBufferRef *device = filter_hw_device ? filter_hw_device->device_ref
+                                               : hw_device_ctx;
+        for (i = 0; i < fg->graph->nb_filters; i++) {
+            fg->graph->filters[i]->hw_device_ctx = av_buffer_ref(device);
+            if (!fg->graph->filters[i]->hw_device_ctx) {
+                ret = AVERROR(ENOMEM);
+                goto fail;
+            }
+        }
+    }
+
+    if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
+        const char *num_inputs;
+        const char *num_outputs;
+        if (!outputs) {
+            num_outputs = "0";
+        } else if (outputs->next) {
+            num_outputs = ">1";
+        } else {
+            num_outputs = "1";
+        }
+        if (!inputs) {
+            num_inputs = "0";
+        } else if (inputs->next) {
+            num_inputs = ">1";
+        } else {
+            num_inputs = "1";
+        }
+        av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
+               "to have exactly 1 input and 1 output."
+               " However, it had %s input(s) and %s output(s)."
+               " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
+               graph_desc, num_inputs, num_outputs);
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
+
+    for (cur = inputs, i = 0; cur; cur = cur->next, i++)
+        if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
+            avfilter_inout_free(&inputs);
+            avfilter_inout_free(&outputs);
+            goto fail;
+        }
+    avfilter_inout_free(&inputs);
+
+    for (cur = outputs, i = 0; cur; cur = cur->next, i++)
+        configure_output_filter(fg, fg->outputs[i], cur);
+    avfilter_inout_free(&outputs);
+
+    if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
+        goto fail;
+
+    /* limit the lists of allowed formats to the ones selected, to
+     * make sure they stay the same if the filtergraph is reconfigured later */
+    for (i = 0; i < fg->nb_outputs; i++) {
+        OutputFilter *ofilter = fg->outputs[i];
+        AVFilterContext *sink = ofilter->filter;
+
+        ofilter->format = av_buffersink_get_format(sink);
+
+        ofilter->width  = av_buffersink_get_w(sink);
+        ofilter->height = av_buffersink_get_h(sink);
+
+        ofilter->sample_rate    = av_buffersink_get_sample_rate(sink);
+        ofilter->channel_layout = av_buffersink_get_channel_layout(sink);
+    }
+
+    fg->reconfiguration = 1;
+
+    for (i = 0; i < fg->nb_outputs; i++) {
+        OutputStream *ost = fg->outputs[i]->ost;
+        if (!ost->enc) {
+            /* identical to the same check in ffmpeg.c, needed because
+               complex filter graphs are initialized earlier */
+            av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
+                     avcodec_get_name(ost->st->codecpar->codec_id), ost->file_index, ost->index);
+            ret = AVERROR(EINVAL);
+            goto fail;
+        }
+        if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
+            !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
+            av_buffersink_set_frame_size(ost->filter->filter,
+                                         ost->enc_ctx->frame_size);
+    }
+
+    for (i = 0; i < fg->nb_inputs; i++) {
+        while (av_fifo_size(fg->inputs[i]->frame_queue)) {
+            AVFrame *tmp;
+            av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
+            ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
+            av_frame_free(&tmp);
+            if (ret < 0)
+                goto fail;
+        }
+    }
+
+    /* send the EOFs for the finished inputs */
+    for (i = 0; i < fg->nb_inputs; i++) {
+        if (fg->inputs[i]->eof) {
+            ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
+            if (ret < 0)
+                goto fail;
+        }
+    }
+
+    /* process queued up subtitle packets */
+    for (i = 0; i < fg->nb_inputs; i++) {
+        InputStream *ist = fg->inputs[i]->ist;
+        if (ist->sub2video.sub_queue && ist->sub2video.frame) {
+            while (av_fifo_size(ist->sub2video.sub_queue)) {
+                AVSubtitle tmp;
+                av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
+                sub2video_update(ist, &tmp);
+                avsubtitle_free(&tmp);
+            }
+        }
+    }
+
+    return 0;
+
+fail:
+    cleanup_filtergraph(fg);
+    return ret;
+}
+
+int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
+{
+    av_buffer_unref(&ifilter->hw_frames_ctx);
+
+    ifilter->format = frame->format;
+
+    ifilter->width               = frame->width;
+    ifilter->height              = frame->height;
+    ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
+
+    ifilter->sample_rate         = frame->sample_rate;
+    ifilter->channels            = frame->channels;
+    ifilter->channel_layout      = frame->channel_layout;
+
+    if (frame->hw_frames_ctx) {
+        ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
+        if (!ifilter->hw_frames_ctx)
+            return AVERROR(ENOMEM);
+    }
+
+    return 0;
+}
+
+int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
+{
+    int i;
+    for (i = 0; i < fg->nb_inputs; i++)
+        if (fg->inputs[i]->ist == ist)
+            return 1;
+    return 0;
+}
+
+int filtergraph_is_simple(FilterGraph *fg)
+{
+    return !fg->graph_desc;
+}
diff --git a/fftools/ffmpeg_hw.c b/fftools/ffmpeg_hw.c
new file mode 100644
index 0000000000..a4d1cada59
--- /dev/null
+++ b/fftools/ffmpeg_hw.c
@@ -0,0 +1,385 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <string.h>
+
+#include "libavutil/avstring.h"
+
+#include "ffmpeg.h"
+
+static int nb_hw_devices;
+static HWDevice **hw_devices;
+
+static HWDevice *hw_device_get_by_type(enum AVHWDeviceType type)
+{
+    HWDevice *found = NULL;
+    int i;
+    for (i = 0; i < nb_hw_devices; i++) {
+        if (hw_devices[i]->type == type) {
+            if (found)
+                return NULL;
+            found = hw_devices[i];
+        }
+    }
+    return found;
+}
+
+HWDevice *hw_device_get_by_name(const char *name)
+{
+    int i;
+    for (i = 0; i < nb_hw_devices; i++) {
+        if (!strcmp(hw_devices[i]->name, name))
+            return hw_devices[i];
+    }
+    return NULL;
+}
+
+static HWDevice *hw_device_add(void)
+{
+    int err;
+    err = av_reallocp_array(&hw_devices, nb_hw_devices + 1,
+                            sizeof(*hw_devices));
+    if (err) {
+        nb_hw_devices = 0;
+        return NULL;
+    }
+    hw_devices[nb_hw_devices] = av_mallocz(sizeof(HWDevice));
+    if (!hw_devices[nb_hw_devices])
+        return NULL;
+    return hw_devices[nb_hw_devices++];
+}
+
+int hw_device_init_from_string(const char *arg, HWDevice **dev_out)
+{
+    // "type=name:device,key=value,key2=value2"
+    // "type:device,key=value,key2=value2"
+    // -> av_hwdevice_ctx_create()
+    // "type=name@name"
+    // "type@name"
+    // -> av_hwdevice_ctx_create_derived()
+
+    AVDictionary *options = NULL;
+    char *type_name = NULL, *name = NULL, *device = NULL;
+    enum AVHWDeviceType type;
+    HWDevice *dev, *src;
+    AVBufferRef *device_ref = NULL;
+    int err;
+    const char *errmsg, *p, *q;
+    size_t k;
+
+    k = strcspn(arg, ":=@");
+    p = arg + k;
+
+    type_name = av_strndup(arg, k);
+    if (!type_name) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+    type = av_hwdevice_find_type_by_name(type_name);
+    if (type == AV_HWDEVICE_TYPE_NONE) {
+        errmsg = "unknown device type";
+        goto invalid;
+    }
+
+    if (*p == '=') {
+        k = strcspn(p + 1, ":@");
+
+        name = av_strndup(p + 1, k);
+        if (!name) {
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+        if (hw_device_get_by_name(name)) {
+            errmsg = "named device already exists";
+            goto invalid;
+        }
+
+        p += 1 + k;
+    } else {
+        // Give the device an automatic name of the form "type%d".
+        // We arbitrarily limit at 1000 anonymous devices of the same
+        // type - there is probably something else very wrong if you
+        // get to this limit.
+        size_t index_pos;
+        int index, index_limit = 1000;
+        index_pos = strlen(type_name);
+        name = av_malloc(index_pos + 4);
+        if (!name) {
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+        for (index = 0; index < index_limit; index++) {
+            snprintf(name, index_pos + 4, "%s%d", type_name, index);
+            if (!hw_device_get_by_name(name))
+                break;
+        }
+        if (index >= index_limit) {
+            errmsg = "too many devices";
+            goto invalid;
+        }
+    }
+
+    if (!*p) {
+        // New device with no parameters.
+        err = av_hwdevice_ctx_create(&device_ref, type,
+                                     NULL, NULL, 0);
+        if (err < 0)
+            goto fail;
+
+    } else if (*p == ':') {
+        // New device with some parameters.
+        ++p;
+        q = strchr(p, ',');
+        if (q) {
+            device = av_strndup(p, q - p);
+            if (!device) {
+                err = AVERROR(ENOMEM);
+                goto fail;
+            }
+            err = av_dict_parse_string(&options, q + 1, "=", ",", 0);
+            if (err < 0) {
+                errmsg = "failed to parse options";
+                goto invalid;
+            }
+        }
+
+        err = av_hwdevice_ctx_create(&device_ref, type,
+                                     device ? device : p, options, 0);
+        if (err < 0)
+            goto fail;
+
+    } else if (*p == '@') {
+        // Derive from existing device.
+
+        src = hw_device_get_by_name(p + 1);
+        if (!src) {
+            errmsg = "invalid source device name";
+            goto invalid;
+        }
+
+        err = av_hwdevice_ctx_create_derived(&device_ref, type,
+                                             src->device_ref, 0);
+        if (err < 0)
+            goto fail;
+    } else {
+        errmsg = "parse error";
+        goto invalid;
+    }
+
+    dev = hw_device_add();
+    if (!dev) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    dev->name = name;
+    dev->type = type;
+    dev->device_ref = device_ref;
+
+    if (dev_out)
+        *dev_out = dev;
+
+    name = NULL;
+    err = 0;
+done:
+    av_freep(&type_name);
+    av_freep(&name);
+    av_freep(&device);
+    av_dict_free(&options);
+    return err;
+invalid:
+    av_log(NULL, AV_LOG_ERROR,
+           "Invalid device specification \"%s\": %s\n", arg, errmsg);
+    err = AVERROR(EINVAL);
+    goto done;
+fail:
+    av_log(NULL, AV_LOG_ERROR,
+           "Device creation failed: %d.\n", err);
+    av_buffer_unref(&device_ref);
+    goto done;
+}
+
+void hw_device_free_all(void)
+{
+    int i;
+    for (i = 0; i < nb_hw_devices; i++) {
+        av_freep(&hw_devices[i]->name);
+        av_buffer_unref(&hw_devices[i]->device_ref);
+        av_freep(&hw_devices[i]);
+    }
+    av_freep(&hw_devices);
+    nb_hw_devices = 0;
+}
+
+static enum AVHWDeviceType hw_device_match_type_by_hwaccel(enum HWAccelID hwaccel_id)
+{
+    int i;
+    if (hwaccel_id == HWACCEL_NONE)
+        return AV_HWDEVICE_TYPE_NONE;
+    for (i = 0; hwaccels[i].name; i++) {
+        if (hwaccels[i].id == hwaccel_id)
+            return hwaccels[i].device_type;
+    }
+    return AV_HWDEVICE_TYPE_NONE;
+}
+
+static enum AVHWDeviceType hw_device_match_type_in_name(const char *codec_name)
+{
+    const char *type_name;
+    enum AVHWDeviceType type;
+    for (type = av_hwdevice_iterate_types(AV_HWDEVICE_TYPE_NONE);
+         type != AV_HWDEVICE_TYPE_NONE;
+         type = av_hwdevice_iterate_types(type)) {
+        type_name = av_hwdevice_get_type_name(type);
+        if (strstr(codec_name, type_name))
+            return type;
+    }
+    return AV_HWDEVICE_TYPE_NONE;
+}
+
+int hw_device_setup_for_decode(InputStream *ist)
+{
+    enum AVHWDeviceType type;
+    HWDevice *dev;
+    int err;
+
+    if (ist->hwaccel_device) {
+        dev = hw_device_get_by_name(ist->hwaccel_device);
+        if (!dev) {
+            char *tmp;
+            type = hw_device_match_type_by_hwaccel(ist->hwaccel_id);
+            if (type == AV_HWDEVICE_TYPE_NONE) {
+                // No match - this isn't necessarily invalid, though,
+                // because an explicit device might not be needed or
+                // the hwaccel setup could be handled elsewhere.
+                return 0;
+            }
+            tmp = av_asprintf("%s:%s", av_hwdevice_get_type_name(type),
+                              ist->hwaccel_device);
+            if (!tmp)
+                return AVERROR(ENOMEM);
+            err = hw_device_init_from_string(tmp, &dev);
+            av_free(tmp);
+            if (err < 0)
+                return err;
+        }
+    } else {
+        if (ist->hwaccel_id != HWACCEL_NONE)
+            type = hw_device_match_type_by_hwaccel(ist->hwaccel_id);
+        else
+            type = hw_device_match_type_in_name(ist->dec->name);
+        if (type != AV_HWDEVICE_TYPE_NONE) {
+            dev = hw_device_get_by_type(type);
+            if (!dev) {
+                hw_device_init_from_string(av_hwdevice_get_type_name(type),
+                                           &dev);
+            }
+        } else {
+            // No device required.
+            return 0;
+        }
+    }
+
+    if (!dev) {
+        av_log(ist->dec_ctx, AV_LOG_WARNING, "No device available "
+               "for decoder (device type %s for codec %s).\n",
+               av_hwdevice_get_type_name(type), ist->dec->name);
+        return 0;
+    }
+
+    ist->dec_ctx->hw_device_ctx = av_buffer_ref(dev->device_ref);
+    if (!ist->dec_ctx->hw_device_ctx)
+        return AVERROR(ENOMEM);
+
+    return 0;
+}
+
+int hw_device_setup_for_encode(OutputStream *ost)
+{
+    enum AVHWDeviceType type;
+    HWDevice *dev;
+
+    type = hw_device_match_type_in_name(ost->enc->name);
+    if (type != AV_HWDEVICE_TYPE_NONE) {
+        dev = hw_device_get_by_type(type);
+        if (!dev) {
+            av_log(ost->enc_ctx, AV_LOG_WARNING, "No device available "
+                   "for encoder (device type %s for codec %s).\n",
+                   av_hwdevice_get_type_name(type), ost->enc->name);
+            return 0;
+        }
+        ost->enc_ctx->hw_device_ctx = av_buffer_ref(dev->device_ref);
+        if (!ost->enc_ctx->hw_device_ctx)
+            return AVERROR(ENOMEM);
+        return 0;
+    } else {
+        // No device required.
+        return 0;
+    }
+}
+
+static int hwaccel_retrieve_data(AVCodecContext *avctx, AVFrame *input)
+{
+    InputStream *ist = avctx->opaque;
+    AVFrame *output = NULL;
+    enum AVPixelFormat output_format = ist->hwaccel_output_format;
+    int err;
+
+    if (input->format == output_format) {
+        // Nothing to do.
+        return 0;
+    }
+
+    output = av_frame_alloc();
+    if (!output)
+        return AVERROR(ENOMEM);
+
+    output->format = output_format;
+
+    err = av_hwframe_transfer_data(output, input, 0);
+    if (err < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Failed to transfer data to "
+               "output frame: %d.\n", err);
+        goto fail;
+    }
+
+    err = av_frame_copy_props(output, input);
+    if (err < 0) {
+        av_frame_unref(output);
+        goto fail;
+    }
+
+    av_frame_unref(input);
+    av_frame_move_ref(input, output);
+    av_frame_free(&output);
+
+    return 0;
+
+fail:
+    av_frame_free(&output);
+    return err;
+}
+
+int hwaccel_decode_init(AVCodecContext *avctx)
+{
+    InputStream *ist = avctx->opaque;
+
+    ist->hwaccel_retrieve_data = &hwaccel_retrieve_data;
+
+    return 0;
+}
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
new file mode 100644
index 0000000000..100fa76e46
--- /dev/null
+++ b/fftools/ffmpeg_opt.c
@@ -0,0 +1,3756 @@
+/*
+ * ffmpeg option parsing
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+#include "ffmpeg.h"
+#include "cmdutils.h"
+
+#include "libavformat/avformat.h"
+
+#include "libavcodec/avcodec.h"
+
+#include "libavfilter/avfilter.h"
+
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/avutil.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/fifo.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/pixfmt.h"
+
+#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
+
+#define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
+{\
+    int i, ret;\
+    for (i = 0; i < o->nb_ ## name; i++) {\
+        char *spec = o->name[i].specifier;\
+        if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
+            outvar = o->name[i].u.type;\
+        else if (ret < 0)\
+            exit_program(1);\
+    }\
+}
+
+#define MATCH_PER_TYPE_OPT(name, type, outvar, fmtctx, mediatype)\
+{\
+    int i;\
+    for (i = 0; i < o->nb_ ## name; i++) {\
+        char *spec = o->name[i].specifier;\
+        if (!strcmp(spec, mediatype))\
+            outvar = o->name[i].u.type;\
+    }\
+}
+
+const HWAccel hwaccels[] = {
+#if HAVE_VDPAU_X11
+    { "vdpau", hwaccel_decode_init, HWACCEL_VDPAU, AV_PIX_FMT_VDPAU,
+      AV_HWDEVICE_TYPE_VDPAU },
+#endif
+#if CONFIG_D3D11VA
+    { "d3d11va", hwaccel_decode_init, HWACCEL_D3D11VA, AV_PIX_FMT_D3D11,
+      AV_HWDEVICE_TYPE_D3D11VA },
+#endif
+#if CONFIG_DXVA2
+    { "dxva2", hwaccel_decode_init, HWACCEL_DXVA2, AV_PIX_FMT_DXVA2_VLD,
+      AV_HWDEVICE_TYPE_DXVA2 },
+#endif
+#if CONFIG_VDA
+    { "vda",   videotoolbox_init,   HWACCEL_VDA,   AV_PIX_FMT_VDA,
+      AV_HWDEVICE_TYPE_NONE },
+#endif
+#if CONFIG_VIDEOTOOLBOX
+    { "videotoolbox",   videotoolbox_init,   HWACCEL_VIDEOTOOLBOX,   AV_PIX_FMT_VIDEOTOOLBOX,
+      AV_HWDEVICE_TYPE_NONE },
+#endif
+#if CONFIG_LIBMFX
+    { "qsv",   qsv_init,   HWACCEL_QSV,   AV_PIX_FMT_QSV,
+      AV_HWDEVICE_TYPE_NONE },
+#endif
+#if CONFIG_VAAPI
+    { "vaapi", hwaccel_decode_init, HWACCEL_VAAPI, AV_PIX_FMT_VAAPI,
+      AV_HWDEVICE_TYPE_VAAPI },
+#endif
+#if CONFIG_CUVID
+    { "cuvid", cuvid_init, HWACCEL_CUVID, AV_PIX_FMT_CUDA,
+      AV_HWDEVICE_TYPE_NONE },
+#endif
+    { 0 },
+};
+int hwaccel_lax_profile_check = 0;
+AVBufferRef *hw_device_ctx;
+HWDevice *filter_hw_device;
+
+char *vstats_filename;
+char *sdp_filename;
+
+float audio_drift_threshold = 0.1;
+float dts_delta_threshold   = 10;
+float dts_error_threshold   = 3600*30;
+
+int audio_volume      = 256;
+int audio_sync_method = 0;
+int video_sync_method = VSYNC_AUTO;
+float frame_drop_threshold = 0;
+int do_deinterlace    = 0;
+int do_benchmark      = 0;
+int do_benchmark_all  = 0;
+int do_hex_dump       = 0;
+int do_pkt_dump       = 0;
+int copy_ts           = 0;
+int start_at_zero     = 0;
+int copy_tb           = -1;
+int debug_ts          = 0;
+int exit_on_error     = 0;
+int abort_on_flags    = 0;
+int print_stats       = -1;
+int qp_hist           = 0;
+int stdin_interaction = 1;
+int frame_bits_per_raw_sample = 0;
+float max_error_rate  = 2.0/3;
+int filter_nbthreads = 0;
+int filter_complex_nbthreads = 0;
+int vstats_version = 2;
+
+
+static int intra_only         = 0;
+static int file_overwrite     = 0;
+static int no_file_overwrite  = 0;
+static int do_psnr            = 0;
+static int input_sync;
+static int override_ffserver  = 0;
+static int input_stream_potentially_available = 0;
+static int ignore_unknown_streams = 0;
+static int copy_unknown_streams = 0;
+static int find_stream_info = 1;
+
+static void uninit_options(OptionsContext *o)
+{
+    const OptionDef *po = options;
+    int i;
+
+    /* all OPT_SPEC and OPT_STRING can be freed in generic way */
+    while (po->name) {
+        void *dst = (uint8_t*)o + po->u.off;
+
+        if (po->flags & OPT_SPEC) {
+            SpecifierOpt **so = dst;
+            int i, *count = (int*)(so + 1);
+            for (i = 0; i < *count; i++) {
+                av_freep(&(*so)[i].specifier);
+                if (po->flags & OPT_STRING)
+                    av_freep(&(*so)[i].u.str);
+            }
+            av_freep(so);
+            *count = 0;
+        } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
+            av_freep(dst);
+        po++;
+    }
+
+    for (i = 0; i < o->nb_stream_maps; i++)
+        av_freep(&o->stream_maps[i].linklabel);
+    av_freep(&o->stream_maps);
+    av_freep(&o->audio_channel_maps);
+    av_freep(&o->streamid_map);
+    av_freep(&o->attachments);
+}
+
+static void init_options(OptionsContext *o)
+{
+    memset(o, 0, sizeof(*o));
+
+    o->stop_time = INT64_MAX;
+    o->mux_max_delay  = 0.7;
+    o->start_time     = AV_NOPTS_VALUE;
+    o->start_time_eof = AV_NOPTS_VALUE;
+    o->recording_time = INT64_MAX;
+    o->limit_filesize = UINT64_MAX;
+    o->chapters_input_file = INT_MAX;
+    o->accurate_seek  = 1;
+}
+
+static int show_hwaccels(void *optctx, const char *opt, const char *arg)
+{
+    int i;
+
+    printf("Hardware acceleration methods:\n");
+    for (i = 0; hwaccels[i].name; i++) {
+        printf("%s\n", hwaccels[i].name);
+    }
+    printf("\n");
+    return 0;
+}
+
+/* return a copy of the input with the stream specifiers removed from the keys */
+static AVDictionary *strip_specifiers(AVDictionary *dict)
+{
+    AVDictionaryEntry *e = NULL;
+    AVDictionary    *ret = NULL;
+
+    while ((e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
+        char *p = strchr(e->key, ':');
+
+        if (p)
+            *p = 0;
+        av_dict_set(&ret, e->key, e->value, 0);
+        if (p)
+            *p = ':';
+    }
+    return ret;
+}
+
+static int opt_abort_on(void *optctx, const char *opt, const char *arg)
+{
+    static const AVOption opts[] = {
+        { "abort_on"        , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
+        { "empty_output"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = ABORT_ON_FLAG_EMPTY_OUTPUT     },    .unit = "flags" },
+        { NULL },
+    };
+    static const AVClass class = {
+        .class_name = "",
+        .item_name  = av_default_item_name,
+        .option     = opts,
+        .version    = LIBAVUTIL_VERSION_INT,
+    };
+    const AVClass *pclass = &class;
+
+    return av_opt_eval_flags(&pclass, &opts[0], arg, &abort_on_flags);
+}
+
+static int opt_sameq(void *optctx, const char *opt, const char *arg)
+{
+    av_log(NULL, AV_LOG_ERROR, "Option '%s' was removed. "
+           "If you are looking for an option to preserve the quality (which is not "
+           "what -%s was for), use -qscale 0 or an equivalent quality factor option.\n",
+           opt, opt);
+    return AVERROR(EINVAL);
+}
+
+static int opt_video_channel(void *optctx, const char *opt, const char *arg)
+{
+    av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
+    return opt_default(optctx, "channel", arg);
+}
+
+static int opt_video_standard(void *optctx, const char *opt, const char *arg)
+{
+    av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
+    return opt_default(optctx, "standard", arg);
+}
+
+static int opt_audio_codec(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "codec:a", arg, options);
+}
+
+static int opt_video_codec(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "codec:v", arg, options);
+}
+
+static int opt_subtitle_codec(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "codec:s", arg, options);
+}
+
+static int opt_data_codec(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "codec:d", arg, options);
+}
+
+static int opt_map(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    StreamMap *m = NULL;
+    int i, negative = 0, file_idx;
+    int sync_file_idx = -1, sync_stream_idx = 0;
+    char *p, *sync;
+    char *map;
+    char *allow_unused;
+
+    if (*arg == '-') {
+        negative = 1;
+        arg++;
+    }
+    map = av_strdup(arg);
+    if (!map)
+        return AVERROR(ENOMEM);
+
+    /* parse sync stream first, just pick first matching stream */
+    if (sync = strchr(map, ',')) {
+        *sync = 0;
+        sync_file_idx = strtol(sync + 1, &sync, 0);
+        if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
+            exit_program(1);
+        }
+        if (*sync)
+            sync++;
+        for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
+            if (check_stream_specifier(input_files[sync_file_idx]->ctx,
+                                       input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
+                sync_stream_idx = i;
+                break;
+            }
+        if (i == input_files[sync_file_idx]->nb_streams) {
+            av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
+                                       "match any streams.\n", arg);
+            exit_program(1);
+        }
+    }
+
+
+    if (map[0] == '[') {
+        /* this mapping refers to lavfi output */
+        const char *c = map + 1;
+        GROW_ARRAY(o->stream_maps, o->nb_stream_maps);
+        m = &o->stream_maps[o->nb_stream_maps - 1];
+        m->linklabel = av_get_token(&c, "]");
+        if (!m->linklabel) {
+            av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
+            exit_program(1);
+        }
+    } else {
+        if (allow_unused = strchr(map, '?'))
+            *allow_unused = 0;
+        file_idx = strtol(map, &p, 0);
+        if (file_idx >= nb_input_files || file_idx < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
+            exit_program(1);
+        }
+        if (negative)
+            /* disable some already defined maps */
+            for (i = 0; i < o->nb_stream_maps; i++) {
+                m = &o->stream_maps[i];
+                if (file_idx == m->file_index &&
+                    check_stream_specifier(input_files[m->file_index]->ctx,
+                                           input_files[m->file_index]->ctx->streams[m->stream_index],
+                                           *p == ':' ? p + 1 : p) > 0)
+                    m->disabled = 1;
+            }
+        else
+            for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
+                if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
+                            *p == ':' ? p + 1 : p) <= 0)
+                    continue;
+                GROW_ARRAY(o->stream_maps, o->nb_stream_maps);
+                m = &o->stream_maps[o->nb_stream_maps - 1];
+
+                m->file_index   = file_idx;
+                m->stream_index = i;
+
+                if (sync_file_idx >= 0) {
+                    m->sync_file_index   = sync_file_idx;
+                    m->sync_stream_index = sync_stream_idx;
+                } else {
+                    m->sync_file_index   = file_idx;
+                    m->sync_stream_index = i;
+                }
+            }
+    }
+
+    if (!m) {
+        if (allow_unused) {
+            av_log(NULL, AV_LOG_VERBOSE, "Stream map '%s' matches no streams; ignoring.\n", arg);
+        } else {
+            av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n"
+                                       "To ignore this, add a trailing '?' to the map.\n", arg);
+            exit_program(1);
+        }
+    }
+
+    av_freep(&map);
+    return 0;
+}
+
+static int opt_attach(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    GROW_ARRAY(o->attachments, o->nb_attachments);
+    o->attachments[o->nb_attachments - 1] = arg;
+    return 0;
+}
+
+static int opt_map_channel(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    int n;
+    AVStream *st;
+    AudioChannelMap *m;
+    char *allow_unused;
+    char *mapchan;
+    mapchan = av_strdup(arg);
+    if (!mapchan)
+        return AVERROR(ENOMEM);
+
+    GROW_ARRAY(o->audio_channel_maps, o->nb_audio_channel_maps);
+    m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
+
+    /* muted channel syntax */
+    n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
+    if ((n == 1 || n == 3) && m->channel_idx == -1) {
+        m->file_idx = m->stream_idx = -1;
+        if (n == 1)
+            m->ofile_idx = m->ostream_idx = -1;
+        av_free(mapchan);
+        return 0;
+    }
+
+    /* normal syntax */
+    n = sscanf(arg, "%d.%d.%d:%d.%d",
+               &m->file_idx,  &m->stream_idx, &m->channel_idx,
+               &m->ofile_idx, &m->ostream_idx);
+
+    if (n != 3 && n != 5) {
+        av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
+               "[file.stream.channel|-1][:syncfile:syncstream]\n");
+        exit_program(1);
+    }
+
+    if (n != 5) // only file.stream.channel specified
+        m->ofile_idx = m->ostream_idx = -1;
+
+    /* check input */
+    if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
+        av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
+               m->file_idx);
+        exit_program(1);
+    }
+    if (m->stream_idx < 0 ||
+        m->stream_idx >= input_files[m->file_idx]->nb_streams) {
+        av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
+               m->file_idx, m->stream_idx);
+        exit_program(1);
+    }
+    st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
+    if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
+        av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
+               m->file_idx, m->stream_idx);
+        exit_program(1);
+    }
+    /* allow trailing ? to map_channel */
+    if (allow_unused = strchr(mapchan, '?'))
+        *allow_unused = 0;
+    if (m->channel_idx < 0 || m->channel_idx >= st->codecpar->channels) {
+        if (allow_unused) {
+            av_log(NULL, AV_LOG_VERBOSE, "mapchan: invalid audio channel #%d.%d.%d\n",
+                    m->file_idx, m->stream_idx, m->channel_idx);
+        } else {
+            av_log(NULL, AV_LOG_FATAL,  "mapchan: invalid audio channel #%d.%d.%d\n"
+                    "To ignore this, add a trailing '?' to the map_channel.\n",
+                    m->file_idx, m->stream_idx, m->channel_idx);
+            exit_program(1);
+        }
+
+    }
+    av_free(mapchan);
+    return 0;
+}
+
+static int opt_sdp_file(void *optctx, const char *opt, const char *arg)
+{
+    av_free(sdp_filename);
+    sdp_filename = av_strdup(arg);
+    return 0;
+}
+
+#if CONFIG_VAAPI
+static int opt_vaapi_device(void *optctx, const char *opt, const char *arg)
+{
+    HWDevice *dev;
+    const char *prefix = "vaapi:";
+    char *tmp;
+    int err;
+    tmp = av_asprintf("%s%s", prefix, arg);
+    if (!tmp)
+        return AVERROR(ENOMEM);
+    err = hw_device_init_from_string(tmp, &dev);
+    av_free(tmp);
+    if (err < 0)
+        return err;
+    hw_device_ctx = av_buffer_ref(dev->device_ref);
+    if (!hw_device_ctx)
+        return AVERROR(ENOMEM);
+    return 0;
+}
+#endif
+
+static int opt_init_hw_device(void *optctx, const char *opt, const char *arg)
+{
+    if (!strcmp(arg, "list")) {
+        enum AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
+        printf("Supported hardware device types:\n");
+        while ((type = av_hwdevice_iterate_types(type)) !=
+               AV_HWDEVICE_TYPE_NONE)
+            printf("%s\n", av_hwdevice_get_type_name(type));
+        printf("\n");
+        exit_program(0);
+    } else {
+        return hw_device_init_from_string(arg, NULL);
+    }
+}
+
+static int opt_filter_hw_device(void *optctx, const char *opt, const char *arg)
+{
+    if (filter_hw_device) {
+        av_log(NULL, AV_LOG_ERROR, "Only one filter device can be used.\n");
+        return AVERROR(EINVAL);
+    }
+    filter_hw_device = hw_device_get_by_name(arg);
+    if (!filter_hw_device) {
+        av_log(NULL, AV_LOG_ERROR, "Invalid filter device %s.\n", arg);
+        return AVERROR(EINVAL);
+    }
+    return 0;
+}
+
+/**
+ * Parse a metadata specifier passed as 'arg' parameter.
+ * @param arg  metadata string to parse
+ * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
+ * @param index for type c/p, chapter/program index is written here
+ * @param stream_spec for type s, the stream specifier is written here
+ */
+static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
+{
+    if (*arg) {
+        *type = *arg;
+        switch (*arg) {
+        case 'g':
+            break;
+        case 's':
+            if (*(++arg) && *arg != ':') {
+                av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
+                exit_program(1);
+            }
+            *stream_spec = *arg == ':' ? arg + 1 : "";
+            break;
+        case 'c':
+        case 'p':
+            if (*(++arg) == ':')
+                *index = strtol(++arg, NULL, 0);
+            break;
+        default:
+            av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
+            exit_program(1);
+        }
+    } else
+        *type = 'g';
+}
+
+static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
+{
+    AVDictionary **meta_in = NULL;
+    AVDictionary **meta_out = NULL;
+    int i, ret = 0;
+    char type_in, type_out;
+    const char *istream_spec = NULL, *ostream_spec = NULL;
+    int idx_in = 0, idx_out = 0;
+
+    parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
+    parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
+
+    if (!ic) {
+        if (type_out == 'g' || !*outspec)
+            o->metadata_global_manual = 1;
+        if (type_out == 's' || !*outspec)
+            o->metadata_streams_manual = 1;
+        if (type_out == 'c' || !*outspec)
+            o->metadata_chapters_manual = 1;
+        return 0;
+    }
+
+    if (type_in == 'g' || type_out == 'g')
+        o->metadata_global_manual = 1;
+    if (type_in == 's' || type_out == 's')
+        o->metadata_streams_manual = 1;
+    if (type_in == 'c' || type_out == 'c')
+        o->metadata_chapters_manual = 1;
+
+    /* ic is NULL when just disabling automatic mappings */
+    if (!ic)
+        return 0;
+
+#define METADATA_CHECK_INDEX(index, nb_elems, desc)\
+    if ((index) < 0 || (index) >= (nb_elems)) {\
+        av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
+                (desc), (index));\
+        exit_program(1);\
+    }
+
+#define SET_DICT(type, meta, context, index)\
+        switch (type) {\
+        case 'g':\
+            meta = &context->metadata;\
+            break;\
+        case 'c':\
+            METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
+            meta = &context->chapters[index]->metadata;\
+            break;\
+        case 'p':\
+            METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
+            meta = &context->programs[index]->metadata;\
+            break;\
+        case 's':\
+            break; /* handled separately below */ \
+        default: av_assert0(0);\
+        }\
+
+    SET_DICT(type_in, meta_in, ic, idx_in);
+    SET_DICT(type_out, meta_out, oc, idx_out);
+
+    /* for input streams choose first matching stream */
+    if (type_in == 's') {
+        for (i = 0; i < ic->nb_streams; i++) {
+            if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
+                meta_in = &ic->streams[i]->metadata;
+                break;
+            } else if (ret < 0)
+                exit_program(1);
+        }
+        if (!meta_in) {
+            av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
+            exit_program(1);
+        }
+    }
+
+    if (type_out == 's') {
+        for (i = 0; i < oc->nb_streams; i++) {
+            if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
+                meta_out = &oc->streams[i]->metadata;
+                av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
+            } else if (ret < 0)
+                exit_program(1);
+        }
+    } else
+        av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
+
+    return 0;
+}
+
+static int opt_recording_timestamp(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    char buf[128];
+    int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
+    struct tm time = *gmtime((time_t*)&recording_timestamp);
+    if (!strftime(buf, sizeof(buf), "creation_time=%Y-%m-%dT%H:%M:%S%z", &time))
+        return -1;
+    parse_option(o, "metadata", buf, options);
+
+    av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
+                                 "tag instead.\n", opt);
+    return 0;
+}
+
+static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
+{
+    const AVCodecDescriptor *desc;
+    const char *codec_string = encoder ? "encoder" : "decoder";
+    AVCodec *codec;
+
+    codec = encoder ?
+        avcodec_find_encoder_by_name(name) :
+        avcodec_find_decoder_by_name(name);
+
+    if (!codec && (desc = avcodec_descriptor_get_by_name(name))) {
+        codec = encoder ? avcodec_find_encoder(desc->id) :
+                          avcodec_find_decoder(desc->id);
+        if (codec)
+            av_log(NULL, AV_LOG_VERBOSE, "Matched %s '%s' for codec '%s'.\n",
+                   codec_string, codec->name, desc->name);
+    }
+
+    if (!codec) {
+        av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
+        exit_program(1);
+    }
+    if (codec->type != type) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
+        exit_program(1);
+    }
+    return codec;
+}
+
+static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
+{
+    char *codec_name = NULL;
+
+    MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
+    if (codec_name) {
+        AVCodec *codec = find_codec_or_die(codec_name, st->codecpar->codec_type, 0);
+        st->codecpar->codec_id = codec->id;
+        return codec;
+    } else
+        return avcodec_find_decoder(st->codecpar->codec_id);
+}
+
+/* Add all the streams from the given input file to the global
+ * list of input streams. */
+static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
+{
+    int i, ret;
+
+    for (i = 0; i < ic->nb_streams; i++) {
+        AVStream *st = ic->streams[i];
+        AVCodecParameters *par = st->codecpar;
+        InputStream *ist = av_mallocz(sizeof(*ist));
+        char *framerate = NULL, *hwaccel = NULL, *hwaccel_device = NULL;
+        char *hwaccel_output_format = NULL;
+        char *codec_tag = NULL;
+        char *next;
+        char *discard_str = NULL;
+        const AVClass *cc = avcodec_get_class();
+        const AVOption *discard_opt = av_opt_find(&cc, "skip_frame", NULL, 0, 0);
+
+        if (!ist)
+            exit_program(1);
+
+        GROW_ARRAY(input_streams, nb_input_streams);
+        input_streams[nb_input_streams - 1] = ist;
+
+        ist->st = st;
+        ist->file_index = nb_input_files;
+        ist->discard = 1;
+        st->discard  = AVDISCARD_ALL;
+        ist->nb_samples = 0;
+        ist->min_pts = INT64_MAX;
+        ist->max_pts = INT64_MIN;
+
+        ist->ts_scale = 1.0;
+        MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
+
+        ist->autorotate = 1;
+        MATCH_PER_STREAM_OPT(autorotate, i, ist->autorotate, ic, st);
+
+        MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
+        if (codec_tag) {
+            uint32_t tag = strtol(codec_tag, &next, 0);
+            if (*next)
+                tag = AV_RL32(codec_tag);
+            st->codecpar->codec_tag = tag;
+        }
+
+        ist->dec = choose_decoder(o, ic, st);
+        ist->decoder_opts = filter_codec_opts(o->g->codec_opts, ist->st->codecpar->codec_id, ic, st, ist->dec);
+
+        ist->reinit_filters = -1;
+        MATCH_PER_STREAM_OPT(reinit_filters, i, ist->reinit_filters, ic, st);
+
+        MATCH_PER_STREAM_OPT(discard, str, discard_str, ic, st);
+        ist->user_set_discard = AVDISCARD_NONE;
+        if (discard_str && av_opt_eval_int(&cc, discard_opt, discard_str, &ist->user_set_discard) < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error parsing discard %s.\n",
+                    discard_str);
+            exit_program(1);
+        }
+
+        ist->filter_in_rescale_delta_last = AV_NOPTS_VALUE;
+
+        ist->dec_ctx = avcodec_alloc_context3(ist->dec);
+        if (!ist->dec_ctx) {
+            av_log(NULL, AV_LOG_ERROR, "Error allocating the decoder context.\n");
+            exit_program(1);
+        }
+
+        ret = avcodec_parameters_to_context(ist->dec_ctx, par);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error initializing the decoder context.\n");
+            exit_program(1);
+        }
+
+        switch (par->codec_type) {
+        case AVMEDIA_TYPE_VIDEO:
+            if(!ist->dec)
+                ist->dec = avcodec_find_decoder(par->codec_id);
+#if FF_API_LOWRES
+            if (av_codec_get_lowres(st->codec)) {
+                av_codec_set_lowres(ist->dec_ctx, av_codec_get_lowres(st->codec));
+                ist->dec_ctx->width  = st->codec->width;
+                ist->dec_ctx->height = st->codec->height;
+                ist->dec_ctx->coded_width  = st->codec->coded_width;
+                ist->dec_ctx->coded_height = st->codec->coded_height;
+#if FF_API_EMU_EDGE
+                ist->dec_ctx->flags |= CODEC_FLAG_EMU_EDGE;
+#endif
+            }
+#endif
+
+            // avformat_find_stream_info() doesn't set this for us anymore.
+            ist->dec_ctx->framerate = st->avg_frame_rate;
+
+            MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
+            if (framerate && av_parse_video_rate(&ist->framerate,
+                                                 framerate) < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
+                       framerate);
+                exit_program(1);
+            }
+
+            ist->top_field_first = -1;
+            MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
+
+            MATCH_PER_STREAM_OPT(hwaccels, str, hwaccel, ic, st);
+            if (hwaccel) {
+                if (!strcmp(hwaccel, "none"))
+                    ist->hwaccel_id = HWACCEL_NONE;
+                else if (!strcmp(hwaccel, "auto"))
+                    ist->hwaccel_id = HWACCEL_AUTO;
+                else {
+                    int i;
+                    for (i = 0; hwaccels[i].name; i++) {
+                        if (!strcmp(hwaccels[i].name, hwaccel)) {
+                            ist->hwaccel_id = hwaccels[i].id;
+                            break;
+                        }
+                    }
+
+                    if (!ist->hwaccel_id) {
+                        av_log(NULL, AV_LOG_FATAL, "Unrecognized hwaccel: %s.\n",
+                               hwaccel);
+                        av_log(NULL, AV_LOG_FATAL, "Supported hwaccels: ");
+                        for (i = 0; hwaccels[i].name; i++)
+                            av_log(NULL, AV_LOG_FATAL, "%s ", hwaccels[i].name);
+                        av_log(NULL, AV_LOG_FATAL, "\n");
+                        exit_program(1);
+                    }
+                }
+            }
+
+            MATCH_PER_STREAM_OPT(hwaccel_devices, str, hwaccel_device, ic, st);
+            if (hwaccel_device) {
+                ist->hwaccel_device = av_strdup(hwaccel_device);
+                if (!ist->hwaccel_device)
+                    exit_program(1);
+            }
+
+            MATCH_PER_STREAM_OPT(hwaccel_output_formats, str,
+                                 hwaccel_output_format, ic, st);
+            if (hwaccel_output_format) {
+                ist->hwaccel_output_format = av_get_pix_fmt(hwaccel_output_format);
+                if (ist->hwaccel_output_format == AV_PIX_FMT_NONE) {
+                    av_log(NULL, AV_LOG_FATAL, "Unrecognised hwaccel output "
+                           "format: %s", hwaccel_output_format);
+                }
+            } else {
+                ist->hwaccel_output_format = AV_PIX_FMT_NONE;
+            }
+
+            ist->hwaccel_pix_fmt = AV_PIX_FMT_NONE;
+
+            break;
+        case AVMEDIA_TYPE_AUDIO:
+            ist->guess_layout_max = INT_MAX;
+            MATCH_PER_STREAM_OPT(guess_layout_max, i, ist->guess_layout_max, ic, st);
+            guess_input_channel_layout(ist);
+            break;
+        case AVMEDIA_TYPE_DATA:
+        case AVMEDIA_TYPE_SUBTITLE: {
+            char *canvas_size = NULL;
+            if(!ist->dec)
+                ist->dec = avcodec_find_decoder(par->codec_id);
+            MATCH_PER_STREAM_OPT(fix_sub_duration, i, ist->fix_sub_duration, ic, st);
+            MATCH_PER_STREAM_OPT(canvas_sizes, str, canvas_size, ic, st);
+            if (canvas_size &&
+                av_parse_video_size(&ist->dec_ctx->width, &ist->dec_ctx->height, canvas_size) < 0) {
+                av_log(NULL, AV_LOG_FATAL, "Invalid canvas size: %s.\n", canvas_size);
+                exit_program(1);
+            }
+            break;
+        }
+        case AVMEDIA_TYPE_ATTACHMENT:
+        case AVMEDIA_TYPE_UNKNOWN:
+            break;
+        default:
+            abort();
+        }
+
+        ret = avcodec_parameters_from_context(par, ist->dec_ctx);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error initializing the decoder context.\n");
+            exit_program(1);
+        }
+    }
+}
+
+static void assert_file_overwrite(const char *filename)
+{
+    if (file_overwrite && no_file_overwrite) {
+        fprintf(stderr, "Error, both -y and -n supplied. Exiting.\n");
+        exit_program(1);
+    }
+
+    if (!file_overwrite) {
+        const char *proto_name = avio_find_protocol_name(filename);
+        if (proto_name && !strcmp(proto_name, "file") && avio_check(filename, 0) == 0) {
+            if (stdin_interaction && !no_file_overwrite) {
+                fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
+                fflush(stderr);
+                term_exit();
+                signal(SIGINT, SIG_DFL);
+                if (!read_yesno()) {
+                    av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
+                    exit_program(1);
+                }
+                term_init();
+            }
+            else {
+                av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
+                exit_program(1);
+            }
+        }
+    }
+}
+
+static void dump_attachment(AVStream *st, const char *filename)
+{
+    int ret;
+    AVIOContext *out = NULL;
+    AVDictionaryEntry *e;
+
+    if (!st->codecpar->extradata_size) {
+        av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
+               nb_input_files - 1, st->index);
+        return;
+    }
+    if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
+        filename = e->value;
+    if (!*filename) {
+        av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
+               "in stream #%d:%d.\n", nb_input_files - 1, st->index);
+        exit_program(1);
+    }
+
+    assert_file_overwrite(filename);
+
+    if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
+               filename);
+        exit_program(1);
+    }
+
+    avio_write(out, st->codecpar->extradata, st->codecpar->extradata_size);
+    avio_flush(out);
+    avio_close(out);
+}
+
+static int open_input_file(OptionsContext *o, const char *filename)
+{
+    InputFile *f;
+    AVFormatContext *ic;
+    AVInputFormat *file_iformat = NULL;
+    int err, i, ret;
+    int64_t timestamp;
+    AVDictionary *unused_opts = NULL;
+    AVDictionaryEntry *e = NULL;
+    char *   video_codec_name = NULL;
+    char *   audio_codec_name = NULL;
+    char *subtitle_codec_name = NULL;
+    char *    data_codec_name = NULL;
+    int scan_all_pmts_set = 0;
+
+    if (o->format) {
+        if (!(file_iformat = av_find_input_format(o->format))) {
+            av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
+            exit_program(1);
+        }
+    }
+
+    if (!strcmp(filename, "-"))
+        filename = "pipe:";
+
+    stdin_interaction &= strncmp(filename, "pipe:", 5) &&
+                         strcmp(filename, "/dev/stdin");
+
+    /* get default parameters from command line */
+    ic = avformat_alloc_context();
+    if (!ic) {
+        print_error(filename, AVERROR(ENOMEM));
+        exit_program(1);
+    }
+    ic->flags |= AVFMT_FLAG_KEEP_SIDE_DATA;
+    if (o->nb_audio_sample_rate) {
+        av_dict_set_int(&o->g->format_opts, "sample_rate", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i, 0);
+    }
+    if (o->nb_audio_channels) {
+        /* because we set audio_channels based on both the "ac" and
+         * "channel_layout" options, we need to check that the specified
+         * demuxer actually has the "channels" option before setting it */
+        if (file_iformat && file_iformat->priv_class &&
+            av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
+                        AV_OPT_SEARCH_FAKE_OBJ)) {
+            av_dict_set_int(&o->g->format_opts, "channels", o->audio_channels[o->nb_audio_channels - 1].u.i, 0);
+        }
+    }
+    if (o->nb_frame_rates) {
+        /* set the format-level framerate option;
+         * this is important for video grabbers, e.g. x11 */
+        if (file_iformat && file_iformat->priv_class &&
+            av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
+                        AV_OPT_SEARCH_FAKE_OBJ)) {
+            av_dict_set(&o->g->format_opts, "framerate",
+                        o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
+        }
+    }
+    if (o->nb_frame_sizes) {
+        av_dict_set(&o->g->format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
+    }
+    if (o->nb_frame_pix_fmts)
+        av_dict_set(&o->g->format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
+
+    MATCH_PER_TYPE_OPT(codec_names, str,    video_codec_name, ic, "v");
+    MATCH_PER_TYPE_OPT(codec_names, str,    audio_codec_name, ic, "a");
+    MATCH_PER_TYPE_OPT(codec_names, str, subtitle_codec_name, ic, "s");
+    MATCH_PER_TYPE_OPT(codec_names, str,     data_codec_name, ic, "d");
+
+    ic->video_codec_id   = video_codec_name ?
+        find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : AV_CODEC_ID_NONE;
+    ic->audio_codec_id   = audio_codec_name ?
+        find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : AV_CODEC_ID_NONE;
+    ic->subtitle_codec_id= subtitle_codec_name ?
+        find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : AV_CODEC_ID_NONE;
+    ic->data_codec_id    = data_codec_name ?
+        find_codec_or_die(data_codec_name, AVMEDIA_TYPE_DATA, 0)->id : AV_CODEC_ID_NONE;
+
+    if (video_codec_name)
+        av_format_set_video_codec   (ic, find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0));
+    if (audio_codec_name)
+        av_format_set_audio_codec   (ic, find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0));
+    if (subtitle_codec_name)
+        av_format_set_subtitle_codec(ic, find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0));
+    if (data_codec_name)
+        av_format_set_data_codec(ic, find_codec_or_die(data_codec_name, AVMEDIA_TYPE_DATA, 0));
+
+    ic->flags |= AVFMT_FLAG_NONBLOCK;
+    ic->interrupt_callback = int_cb;
+
+    if (!av_dict_get(o->g->format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
+        av_dict_set(&o->g->format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
+        scan_all_pmts_set = 1;
+    }
+    /* open the input file with generic avformat function */
+    err = avformat_open_input(&ic, filename, file_iformat, &o->g->format_opts);
+    if (err < 0) {
+        print_error(filename, err);
+        if (err == AVERROR_PROTOCOL_NOT_FOUND)
+            av_log(NULL, AV_LOG_ERROR, "Did you mean file:%s?\n", filename);
+        exit_program(1);
+    }
+    if (scan_all_pmts_set)
+        av_dict_set(&o->g->format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
+    remove_avoptions(&o->g->format_opts, o->g->codec_opts);
+    assert_avoptions(o->g->format_opts);
+
+    /* apply forced codec ids */
+    for (i = 0; i < ic->nb_streams; i++)
+        choose_decoder(o, ic, ic->streams[i]);
+
+    if (find_stream_info) {
+        AVDictionary **opts = setup_find_stream_info_opts(ic, o->g->codec_opts);
+        int orig_nb_streams = ic->nb_streams;
+
+        /* If not enough info to get the stream parameters, we decode the
+           first frames to get it. (used in mpeg case for example) */
+        ret = avformat_find_stream_info(ic, opts);
+
+        for (i = 0; i < orig_nb_streams; i++)
+            av_dict_free(&opts[i]);
+        av_freep(&opts);
+
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
+            if (ic->nb_streams == 0) {
+                avformat_close_input(&ic);
+                exit_program(1);
+            }
+        }
+    }
+
+    if (o->start_time_eof != AV_NOPTS_VALUE) {
+        if (ic->duration>0) {
+            o->start_time = o->start_time_eof + ic->duration;
+        } else
+            av_log(NULL, AV_LOG_WARNING, "Cannot use -sseof, duration of %s not known\n", filename);
+    }
+    timestamp = (o->start_time == AV_NOPTS_VALUE) ? 0 : o->start_time;
+    /* add the stream start time */
+    if (!o->seek_timestamp && ic->start_time != AV_NOPTS_VALUE)
+        timestamp += ic->start_time;
+
+    /* if seeking requested, we execute it */
+    if (o->start_time != AV_NOPTS_VALUE) {
+        int64_t seek_timestamp = timestamp;
+
+        if (!(ic->iformat->flags & AVFMT_SEEK_TO_PTS)) {
+            int dts_heuristic = 0;
+            for (i=0; i<ic->nb_streams; i++) {
+                const AVCodecParameters *par = ic->streams[i]->codecpar;
+                if (par->video_delay)
+                    dts_heuristic = 1;
+            }
+            if (dts_heuristic) {
+                seek_timestamp -= 3*AV_TIME_BASE / 23;
+            }
+        }
+        ret = avformat_seek_file(ic, -1, INT64_MIN, seek_timestamp, seek_timestamp, 0);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
+                   filename, (double)timestamp / AV_TIME_BASE);
+        }
+    }
+
+    /* update the current parameters so that they match the one of the input stream */
+    add_input_streams(o, ic);
+
+    /* dump the file content */
+    av_dump_format(ic, nb_input_files, filename, 0);
+
+    GROW_ARRAY(input_files, nb_input_files);
+    f = av_mallocz(sizeof(*f));
+    if (!f)
+        exit_program(1);
+    input_files[nb_input_files - 1] = f;
+
+    f->ctx        = ic;
+    f->ist_index  = nb_input_streams - ic->nb_streams;
+    f->start_time = o->start_time;
+    f->recording_time = o->recording_time;
+    f->input_ts_offset = o->input_ts_offset;
+    f->ts_offset  = o->input_ts_offset - (copy_ts ? (start_at_zero && ic->start_time != AV_NOPTS_VALUE ? ic->start_time : 0) : timestamp);
+    f->nb_streams = ic->nb_streams;
+    f->rate_emu   = o->rate_emu;
+    f->accurate_seek = o->accurate_seek;
+    f->loop = o->loop;
+    f->duration = 0;
+    f->time_base = (AVRational){ 1, 1 };
+#if HAVE_PTHREADS
+    f->thread_queue_size = o->thread_queue_size > 0 ? o->thread_queue_size : 8;
+#endif
+
+    /* check if all codec options have been used */
+    unused_opts = strip_specifiers(o->g->codec_opts);
+    for (i = f->ist_index; i < nb_input_streams; i++) {
+        e = NULL;
+        while ((e = av_dict_get(input_streams[i]->decoder_opts, "", e,
+                                AV_DICT_IGNORE_SUFFIX)))
+            av_dict_set(&unused_opts, e->key, NULL, 0);
+    }
+
+    e = NULL;
+    while ((e = av_dict_get(unused_opts, "", e, AV_DICT_IGNORE_SUFFIX))) {
+        const AVClass *class = avcodec_get_class();
+        const AVOption *option = av_opt_find(&class, e->key, NULL, 0,
+                                             AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
+        const AVClass *fclass = avformat_get_class();
+        const AVOption *foption = av_opt_find(&fclass, e->key, NULL, 0,
+                                             AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
+        if (!option || foption)
+            continue;
+
+
+        if (!(option->flags & AV_OPT_FLAG_DECODING_PARAM)) {
+            av_log(NULL, AV_LOG_ERROR, "Codec AVOption %s (%s) specified for "
+                   "input file #%d (%s) is not a decoding option.\n", e->key,
+                   option->help ? option->help : "", nb_input_files - 1,
+                   filename);
+            exit_program(1);
+        }
+
+        av_log(NULL, AV_LOG_WARNING, "Codec AVOption %s (%s) specified for "
+               "input file #%d (%s) has not been used for any stream. The most "
+               "likely reason is either wrong type (e.g. a video option with "
+               "no video streams) or that it is a private option of some decoder "
+               "which was not actually used for any stream.\n", e->key,
+               option->help ? option->help : "", nb_input_files - 1, filename);
+    }
+    av_dict_free(&unused_opts);
+
+    for (i = 0; i < o->nb_dump_attachment; i++) {
+        int j;
+
+        for (j = 0; j < ic->nb_streams; j++) {
+            AVStream *st = ic->streams[j];
+
+            if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
+                dump_attachment(st, o->dump_attachment[i].u.str);
+        }
+    }
+
+    input_stream_potentially_available = 1;
+
+    return 0;
+}
+
+static uint8_t *get_line(AVIOContext *s)
+{
+    AVIOContext *line;
+    uint8_t *buf;
+    char c;
+
+    if (avio_open_dyn_buf(&line) < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
+        exit_program(1);
+    }
+
+    while ((c = avio_r8(s)) && c != '\n')
+        avio_w8(line, c);
+    avio_w8(line, 0);
+    avio_close_dyn_buf(line, &buf);
+
+    return buf;
+}
+
+static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
+{
+    int i, ret = -1;
+    char filename[1000];
+    const char *base[3] = { getenv("AVCONV_DATADIR"),
+                            getenv("HOME"),
+                            AVCONV_DATADIR,
+                            };
+
+    for (i = 0; i < FF_ARRAY_ELEMS(base) && ret < 0; i++) {
+        if (!base[i])
+            continue;
+        if (codec_name) {
+            snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
+                     i != 1 ? "" : "/.avconv", codec_name, preset_name);
+            ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
+        }
+        if (ret < 0) {
+            snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
+                     i != 1 ? "" : "/.avconv", preset_name);
+            ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
+        }
+    }
+    return ret;
+}
+
+static int choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
+{
+    enum AVMediaType type = ost->st->codecpar->codec_type;
+    char *codec_name = NULL;
+
+    if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO || type == AVMEDIA_TYPE_SUBTITLE) {
+        MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
+        if (!codec_name) {
+            ost->st->codecpar->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
+                                                         NULL, ost->st->codecpar->codec_type);
+            ost->enc = avcodec_find_encoder(ost->st->codecpar->codec_id);
+            if (!ost->enc) {
+                av_log(NULL, AV_LOG_FATAL, "Automatic encoder selection failed for "
+                       "output stream #%d:%d. Default encoder for format %s (codec %s) is "
+                       "probably disabled. Please choose an encoder manually.\n",
+                       ost->file_index, ost->index, s->oformat->name,
+                       avcodec_get_name(ost->st->codecpar->codec_id));
+                return AVERROR_ENCODER_NOT_FOUND;
+            }
+        } else if (!strcmp(codec_name, "copy"))
+            ost->stream_copy = 1;
+        else {
+            ost->enc = find_codec_or_die(codec_name, ost->st->codecpar->codec_type, 1);
+            ost->st->codecpar->codec_id = ost->enc->id;
+        }
+        ost->encoding_needed = !ost->stream_copy;
+    } else {
+        /* no encoding supported for other media types */
+        ost->stream_copy     = 1;
+        ost->encoding_needed = 0;
+    }
+
+    return 0;
+}
+
+static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type, int source_index)
+{
+    OutputStream *ost;
+    AVStream *st = avformat_new_stream(oc, NULL);
+    int idx      = oc->nb_streams - 1, ret = 0;
+    const char *bsfs = NULL, *time_base = NULL;
+    char *next, *codec_tag = NULL;
+    double qscale = -1;
+    int i;
+
+    if (!st) {
+        av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
+        exit_program(1);
+    }
+
+    if (oc->nb_streams - 1 < o->nb_streamid_map)
+        st->id = o->streamid_map[oc->nb_streams - 1];
+
+    GROW_ARRAY(output_streams, nb_output_streams);
+    if (!(ost = av_mallocz(sizeof(*ost))))
+        exit_program(1);
+    output_streams[nb_output_streams - 1] = ost;
+
+    ost->file_index = nb_output_files - 1;
+    ost->index      = idx;
+    ost->st         = st;
+    st->codecpar->codec_type = type;
+
+    ret = choose_encoder(o, oc, ost);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Error selecting an encoder for stream "
+               "%d:%d\n", ost->file_index, ost->index);
+        exit_program(1);
+    }
+
+    ost->enc_ctx = avcodec_alloc_context3(ost->enc);
+    if (!ost->enc_ctx) {
+        av_log(NULL, AV_LOG_ERROR, "Error allocating the encoding context.\n");
+        exit_program(1);
+    }
+    ost->enc_ctx->codec_type = type;
+
+    ost->ref_par = avcodec_parameters_alloc();
+    if (!ost->ref_par) {
+        av_log(NULL, AV_LOG_ERROR, "Error allocating the encoding parameters.\n");
+        exit_program(1);
+    }
+
+    if (ost->enc) {
+        AVIOContext *s = NULL;
+        char *buf = NULL, *arg = NULL, *preset = NULL;
+
+        ost->encoder_opts  = filter_codec_opts(o->g->codec_opts, ost->enc->id, oc, st, ost->enc);
+
+        MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
+        if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
+            do  {
+                buf = get_line(s);
+                if (!buf[0] || buf[0] == '#') {
+                    av_free(buf);
+                    continue;
+                }
+                if (!(arg = strchr(buf, '='))) {
+                    av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
+                    exit_program(1);
+                }
+                *arg++ = 0;
+                av_dict_set(&ost->encoder_opts, buf, arg, AV_DICT_DONT_OVERWRITE);
+                av_free(buf);
+            } while (!s->eof_reached);
+            avio_closep(&s);
+        }
+        if (ret) {
+            av_log(NULL, AV_LOG_FATAL,
+                   "Preset %s specified for stream %d:%d, but could not be opened.\n",
+                   preset, ost->file_index, ost->index);
+            exit_program(1);
+        }
+    } else {
+        ost->encoder_opts = filter_codec_opts(o->g->codec_opts, AV_CODEC_ID_NONE, oc, st, NULL);
+    }
+
+    MATCH_PER_STREAM_OPT(time_bases, str, time_base, oc, st);
+    if (time_base) {
+        AVRational q;
+        if (av_parse_ratio(&q, time_base, INT_MAX, 0, NULL) < 0 ||
+            q.num <= 0 || q.den <= 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid time base: %s\n", time_base);
+            exit_program(1);
+        }
+        st->time_base = q;
+    }
+
+    MATCH_PER_STREAM_OPT(enc_time_bases, str, time_base, oc, st);
+    if (time_base) {
+        AVRational q;
+        if (av_parse_ratio(&q, time_base, INT_MAX, 0, NULL) < 0 ||
+            q.den <= 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid time base: %s\n", time_base);
+            exit_program(1);
+        }
+        ost->enc_timebase = q;
+    }
+
+    ost->max_frames = INT64_MAX;
+    MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
+    for (i = 0; i<o->nb_max_frames; i++) {
+        char *p = o->max_frames[i].specifier;
+        if (!*p && type != AVMEDIA_TYPE_VIDEO) {
+            av_log(NULL, AV_LOG_WARNING, "Applying unspecific -frames to non video streams, maybe you meant -vframes ?\n");
+            break;
+        }
+    }
+
+    ost->copy_prior_start = -1;
+    MATCH_PER_STREAM_OPT(copy_prior_start, i, ost->copy_prior_start, oc ,st);
+
+    MATCH_PER_STREAM_OPT(bitstream_filters, str, bsfs, oc, st);
+    while (bsfs && *bsfs) {
+        const AVBitStreamFilter *filter;
+        char *bsf, *bsf_options_str, *bsf_name;
+
+        bsf = av_get_token(&bsfs, ",");
+        if (!bsf)
+            exit_program(1);
+        bsf_name = av_strtok(bsf, "=", &bsf_options_str);
+        if (!bsf_name)
+            exit_program(1);
+
+        filter = av_bsf_get_by_name(bsf_name);
+        if (!filter) {
+            av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf_name);
+            exit_program(1);
+        }
+
+        ost->bsf_ctx = av_realloc_array(ost->bsf_ctx,
+                                        ost->nb_bitstream_filters + 1,
+                                        sizeof(*ost->bsf_ctx));
+        if (!ost->bsf_ctx)
+            exit_program(1);
+
+        ret = av_bsf_alloc(filter, &ost->bsf_ctx[ost->nb_bitstream_filters]);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n");
+            exit_program(1);
+        }
+
+        ost->nb_bitstream_filters++;
+
+        if (bsf_options_str && filter->priv_class) {
+            const AVOption *opt = av_opt_next(ost->bsf_ctx[ost->nb_bitstream_filters-1]->priv_data, NULL);
+            const char * shorthand[2] = {NULL};
+
+            if (opt)
+                shorthand[0] = opt->name;
+
+            ret = av_opt_set_from_string(ost->bsf_ctx[ost->nb_bitstream_filters-1]->priv_data, bsf_options_str, shorthand, "=", ":");
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Error parsing options for bitstream filter %s\n", bsf_name);
+                exit_program(1);
+            }
+        }
+        av_freep(&bsf);
+
+        if (*bsfs)
+            bsfs++;
+    }
+
+    MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
+    if (codec_tag) {
+        uint32_t tag = strtol(codec_tag, &next, 0);
+        if (*next)
+            tag = AV_RL32(codec_tag);
+        ost->st->codecpar->codec_tag =
+        ost->enc_ctx->codec_tag = tag;
+    }
+
+    MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
+    if (qscale >= 0) {
+        ost->enc_ctx->flags |= AV_CODEC_FLAG_QSCALE;
+        ost->enc_ctx->global_quality = FF_QP2LAMBDA * qscale;
+    }
+
+    MATCH_PER_STREAM_OPT(disposition, str, ost->disposition, oc, st);
+    ost->disposition = av_strdup(ost->disposition);
+
+    ost->max_muxing_queue_size = 128;
+    MATCH_PER_STREAM_OPT(max_muxing_queue_size, i, ost->max_muxing_queue_size, oc, st);
+    ost->max_muxing_queue_size *= sizeof(AVPacket);
+
+    if (oc->oformat->flags & AVFMT_GLOBALHEADER)
+        ost->enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
+
+    av_dict_copy(&ost->sws_dict, o->g->sws_dict, 0);
+
+    av_dict_copy(&ost->swr_opts, o->g->swr_opts, 0);
+    if (ost->enc && av_get_exact_bits_per_sample(ost->enc->id) == 24)
+        av_dict_set(&ost->swr_opts, "output_sample_bits", "24", 0);
+
+    av_dict_copy(&ost->resample_opts, o->g->resample_opts, 0);
+
+    ost->source_index = source_index;
+    if (source_index >= 0) {
+        ost->sync_ist = input_streams[source_index];
+        input_streams[source_index]->discard = 0;
+        input_streams[source_index]->st->discard = input_streams[source_index]->user_set_discard;
+    }
+    ost->last_mux_dts = AV_NOPTS_VALUE;
+
+    ost->muxing_queue = av_fifo_alloc(8 * sizeof(AVPacket));
+    if (!ost->muxing_queue)
+        exit_program(1);
+
+    return ost;
+}
+
+static void parse_matrix_coeffs(uint16_t *dest, const char *str)
+{
+    int i;
+    const char *p = str;
+    for (i = 0;; i++) {
+        dest[i] = atoi(p);
+        if (i == 63)
+            break;
+        p = strchr(p, ',');
+        if (!p) {
+            av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
+            exit_program(1);
+        }
+        p++;
+    }
+}
+
+/* read file contents into a string */
+static uint8_t *read_file(const char *filename)
+{
+    AVIOContext *pb      = NULL;
+    AVIOContext *dyn_buf = NULL;
+    int ret = avio_open(&pb, filename, AVIO_FLAG_READ);
+    uint8_t buf[1024], *str;
+
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Error opening file %s.\n", filename);
+        return NULL;
+    }
+
+    ret = avio_open_dyn_buf(&dyn_buf);
+    if (ret < 0) {
+        avio_closep(&pb);
+        return NULL;
+    }
+    while ((ret = avio_read(pb, buf, sizeof(buf))) > 0)
+        avio_write(dyn_buf, buf, ret);
+    avio_w8(dyn_buf, 0);
+    avio_closep(&pb);
+
+    ret = avio_close_dyn_buf(dyn_buf, &str);
+    if (ret < 0)
+        return NULL;
+    return str;
+}
+
+static char *get_ost_filters(OptionsContext *o, AVFormatContext *oc,
+                             OutputStream *ost)
+{
+    AVStream *st = ost->st;
+
+    if (ost->filters_script && ost->filters) {
+        av_log(NULL, AV_LOG_ERROR, "Both -filter and -filter_script set for "
+               "output stream #%d:%d.\n", nb_output_files, st->index);
+        exit_program(1);
+    }
+
+    if (ost->filters_script)
+        return read_file(ost->filters_script);
+    else if (ost->filters)
+        return av_strdup(ost->filters);
+
+    return av_strdup(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ?
+                     "null" : "anull");
+}
+
+static void check_streamcopy_filters(OptionsContext *o, AVFormatContext *oc,
+                                     const OutputStream *ost, enum AVMediaType type)
+{
+    if (ost->filters_script || ost->filters) {
+        av_log(NULL, AV_LOG_ERROR,
+               "%s '%s' was defined for %s output stream %d:%d but codec copy was selected.\n"
+               "Filtering and streamcopy cannot be used together.\n",
+               ost->filters ? "Filtergraph" : "Filtergraph script",
+               ost->filters ? ost->filters : ost->filters_script,
+               av_get_media_type_string(type), ost->file_index, ost->index);
+        exit_program(1);
+    }
+}
+
+static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
+{
+    AVStream *st;
+    OutputStream *ost;
+    AVCodecContext *video_enc;
+    char *frame_rate = NULL, *frame_aspect_ratio = NULL;
+
+    ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO, source_index);
+    st  = ost->st;
+    video_enc = ost->enc_ctx;
+
+    MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
+    if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
+        exit_program(1);
+    }
+    if (frame_rate && video_sync_method == VSYNC_PASSTHROUGH)
+        av_log(NULL, AV_LOG_ERROR, "Using -vsync 0 and -r can produce invalid output files\n");
+
+    MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
+    if (frame_aspect_ratio) {
+        AVRational q;
+        if (av_parse_ratio(&q, frame_aspect_ratio, 255, 0, NULL) < 0 ||
+            q.num <= 0 || q.den <= 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid aspect ratio: %s\n", frame_aspect_ratio);
+            exit_program(1);
+        }
+        ost->frame_aspect_ratio = q;
+    }
+
+    MATCH_PER_STREAM_OPT(filter_scripts, str, ost->filters_script, oc, st);
+    MATCH_PER_STREAM_OPT(filters,        str, ost->filters,        oc, st);
+
+    if (!ost->stream_copy) {
+        const char *p = NULL;
+        char *frame_size = NULL;
+        char *frame_pix_fmt = NULL;
+        char *intra_matrix = NULL, *inter_matrix = NULL;
+        char *chroma_intra_matrix = NULL;
+        int do_pass = 0;
+        int i;
+
+        MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
+        if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
+            exit_program(1);
+        }
+
+        video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
+        MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
+        if (frame_pix_fmt && *frame_pix_fmt == '+') {
+            ost->keep_pix_fmt = 1;
+            if (!*++frame_pix_fmt)
+                frame_pix_fmt = NULL;
+        }
+        if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == AV_PIX_FMT_NONE) {
+            av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
+            exit_program(1);
+        }
+        st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
+
+        if (intra_only)
+            video_enc->gop_size = 0;
+        MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
+        if (intra_matrix) {
+            if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
+                av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
+                exit_program(1);
+            }
+            parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
+        }
+        MATCH_PER_STREAM_OPT(chroma_intra_matrices, str, chroma_intra_matrix, oc, st);
+        if (chroma_intra_matrix) {
+            uint16_t *p = av_mallocz(sizeof(*video_enc->chroma_intra_matrix) * 64);
+            if (!p) {
+                av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
+                exit_program(1);
+            }
+            av_codec_set_chroma_intra_matrix(video_enc, p);
+            parse_matrix_coeffs(p, chroma_intra_matrix);
+        }
+        MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
+        if (inter_matrix) {
+            if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
+                av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
+                exit_program(1);
+            }
+            parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
+        }
+
+        MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
+        for (i = 0; p; i++) {
+            int start, end, q;
+            int e = sscanf(p, "%d,%d,%d", &start, &end, &q);
+            if (e != 3) {
+                av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
+                exit_program(1);
+            }
+            video_enc->rc_override =
+                av_realloc_array(video_enc->rc_override,
+                                 i + 1, sizeof(RcOverride));
+            if (!video_enc->rc_override) {
+                av_log(NULL, AV_LOG_FATAL, "Could not (re)allocate memory for rc_override.\n");
+                exit_program(1);
+            }
+            video_enc->rc_override[i].start_frame = start;
+            video_enc->rc_override[i].end_frame   = end;
+            if (q > 0) {
+                video_enc->rc_override[i].qscale         = q;
+                video_enc->rc_override[i].quality_factor = 1.0;
+            }
+            else {
+                video_enc->rc_override[i].qscale         = 0;
+                video_enc->rc_override[i].quality_factor = -q/100.0;
+            }
+            p = strchr(p, '/');
+            if (p) p++;
+        }
+        video_enc->rc_override_count = i;
+
+        if (do_psnr)
+            video_enc->flags|= AV_CODEC_FLAG_PSNR;
+
+        /* two pass mode */
+        MATCH_PER_STREAM_OPT(pass, i, do_pass, oc, st);
+        if (do_pass) {
+            if (do_pass & 1) {
+                video_enc->flags |= AV_CODEC_FLAG_PASS1;
+                av_dict_set(&ost->encoder_opts, "flags", "+pass1", AV_DICT_APPEND);
+            }
+            if (do_pass & 2) {
+                video_enc->flags |= AV_CODEC_FLAG_PASS2;
+                av_dict_set(&ost->encoder_opts, "flags", "+pass2", AV_DICT_APPEND);
+            }
+        }
+
+        MATCH_PER_STREAM_OPT(passlogfiles, str, ost->logfile_prefix, oc, st);
+        if (ost->logfile_prefix &&
+            !(ost->logfile_prefix = av_strdup(ost->logfile_prefix)))
+            exit_program(1);
+
+        if (do_pass) {
+            char logfilename[1024];
+            FILE *f;
+
+            snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
+                     ost->logfile_prefix ? ost->logfile_prefix :
+                                           DEFAULT_PASS_LOGFILENAME_PREFIX,
+                     i);
+            if (!strcmp(ost->enc->name, "libx264")) {
+                av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
+            } else {
+                if (video_enc->flags & AV_CODEC_FLAG_PASS2) {
+                    char  *logbuffer = read_file(logfilename);
+
+                    if (!logbuffer) {
+                        av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
+                               logfilename);
+                        exit_program(1);
+                    }
+                    video_enc->stats_in = logbuffer;
+                }
+                if (video_enc->flags & AV_CODEC_FLAG_PASS1) {
+                    f = av_fopen_utf8(logfilename, "wb");
+                    if (!f) {
+                        av_log(NULL, AV_LOG_FATAL,
+                               "Cannot write log file '%s' for pass-1 encoding: %s\n",
+                               logfilename, strerror(errno));
+                        exit_program(1);
+                    }
+                    ost->logfile = f;
+                }
+            }
+        }
+
+        MATCH_PER_STREAM_OPT(forced_key_frames, str, ost->forced_keyframes, oc, st);
+        if (ost->forced_keyframes)
+            ost->forced_keyframes = av_strdup(ost->forced_keyframes);
+
+        MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
+
+        ost->top_field_first = -1;
+        MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
+
+
+        ost->avfilter = get_ost_filters(o, oc, ost);
+        if (!ost->avfilter)
+            exit_program(1);
+    } else {
+        MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
+    }
+
+    if (ost->stream_copy)
+        check_streamcopy_filters(o, oc, ost, AVMEDIA_TYPE_VIDEO);
+
+    return ost;
+}
+
+static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
+{
+    int n;
+    AVStream *st;
+    OutputStream *ost;
+    AVCodecContext *audio_enc;
+
+    ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO, source_index);
+    st  = ost->st;
+
+    audio_enc = ost->enc_ctx;
+    audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
+
+    MATCH_PER_STREAM_OPT(filter_scripts, str, ost->filters_script, oc, st);
+    MATCH_PER_STREAM_OPT(filters,        str, ost->filters,        oc, st);
+
+    if (!ost->stream_copy) {
+        char *sample_fmt = NULL;
+
+        MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
+
+        MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
+        if (sample_fmt &&
+            (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
+            exit_program(1);
+        }
+
+        MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
+
+        MATCH_PER_STREAM_OPT(apad, str, ost->apad, oc, st);
+        ost->apad = av_strdup(ost->apad);
+
+        ost->avfilter = get_ost_filters(o, oc, ost);
+        if (!ost->avfilter)
+            exit_program(1);
+
+        /* check for channel mapping for this audio stream */
+        for (n = 0; n < o->nb_audio_channel_maps; n++) {
+            AudioChannelMap *map = &o->audio_channel_maps[n];
+            if ((map->ofile_idx   == -1 || ost->file_index == map->ofile_idx) &&
+                (map->ostream_idx == -1 || ost->st->index  == map->ostream_idx)) {
+                InputStream *ist;
+
+                if (map->channel_idx == -1) {
+                    ist = NULL;
+                } else if (ost->source_index < 0) {
+                    av_log(NULL, AV_LOG_FATAL, "Cannot determine input stream for channel mapping %d.%d\n",
+                           ost->file_index, ost->st->index);
+                    continue;
+                } else {
+                    ist = input_streams[ost->source_index];
+                }
+
+                if (!ist || (ist->file_index == map->file_idx && ist->st->index == map->stream_idx)) {
+                    if (av_reallocp_array(&ost->audio_channels_map,
+                                          ost->audio_channels_mapped + 1,
+                                          sizeof(*ost->audio_channels_map)
+                                          ) < 0 )
+                        exit_program(1);
+
+                    ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
+                }
+            }
+        }
+    }
+
+    if (ost->stream_copy)
+        check_streamcopy_filters(o, oc, ost, AVMEDIA_TYPE_AUDIO);
+
+    return ost;
+}
+
+static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
+{
+    OutputStream *ost;
+
+    ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA, source_index);
+    if (!ost->stream_copy) {
+        av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
+        exit_program(1);
+    }
+
+    return ost;
+}
+
+static OutputStream *new_unknown_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
+{
+    OutputStream *ost;
+
+    ost = new_output_stream(o, oc, AVMEDIA_TYPE_UNKNOWN, source_index);
+    if (!ost->stream_copy) {
+        av_log(NULL, AV_LOG_FATAL, "Unknown stream encoding not supported yet (only streamcopy)\n");
+        exit_program(1);
+    }
+
+    return ost;
+}
+
+static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
+{
+    OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT, source_index);
+    ost->stream_copy = 1;
+    ost->finished    = 1;
+    return ost;
+}
+
+static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
+{
+    AVStream *st;
+    OutputStream *ost;
+    AVCodecContext *subtitle_enc;
+
+    ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE, source_index);
+    st  = ost->st;
+    subtitle_enc = ost->enc_ctx;
+
+    subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
+
+    MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc, st);
+
+    if (!ost->stream_copy) {
+        char *frame_size = NULL;
+
+        MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
+        if (frame_size && av_parse_video_size(&subtitle_enc->width, &subtitle_enc->height, frame_size) < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
+            exit_program(1);
+        }
+    }
+
+    return ost;
+}
+
+/* arg format is "output-stream-index:streamid-value". */
+static int opt_streamid(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    int idx;
+    char *p;
+    char idx_str[16];
+
+    av_strlcpy(idx_str, arg, sizeof(idx_str));
+    p = strchr(idx_str, ':');
+    if (!p) {
+        av_log(NULL, AV_LOG_FATAL,
+               "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
+               arg, opt);
+        exit_program(1);
+    }
+    *p++ = '\0';
+    idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
+    o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
+    o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
+    return 0;
+}
+
+static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
+{
+    AVFormatContext *is = ifile->ctx;
+    AVFormatContext *os = ofile->ctx;
+    AVChapter **tmp;
+    int i;
+
+    tmp = av_realloc_f(os->chapters, is->nb_chapters + os->nb_chapters, sizeof(*os->chapters));
+    if (!tmp)
+        return AVERROR(ENOMEM);
+    os->chapters = tmp;
+
+    for (i = 0; i < is->nb_chapters; i++) {
+        AVChapter *in_ch = is->chapters[i], *out_ch;
+        int64_t start_time = (ofile->start_time == AV_NOPTS_VALUE) ? 0 : ofile->start_time;
+        int64_t ts_off   = av_rescale_q(start_time - ifile->ts_offset,
+                                       AV_TIME_BASE_Q, in_ch->time_base);
+        int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
+                           av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
+
+
+        if (in_ch->end < ts_off)
+            continue;
+        if (rt != INT64_MAX && in_ch->start > rt + ts_off)
+            break;
+
+        out_ch = av_mallocz(sizeof(AVChapter));
+        if (!out_ch)
+            return AVERROR(ENOMEM);
+
+        out_ch->id        = in_ch->id;
+        out_ch->time_base = in_ch->time_base;
+        out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
+        out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
+
+        if (copy_metadata)
+            av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
+
+        os->chapters[os->nb_chapters++] = out_ch;
+    }
+    return 0;
+}
+
+static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
+{
+    int i, err;
+    AVFormatContext *ic = avformat_alloc_context();
+
+    ic->flags |= AVFMT_FLAG_KEEP_SIDE_DATA;
+    ic->interrupt_callback = int_cb;
+    err = avformat_open_input(&ic, filename, NULL, NULL);
+    if (err < 0)
+        return err;
+    /* copy stream format */
+    for(i=0;i<ic->nb_streams;i++) {
+        AVStream *st;
+        OutputStream *ost;
+        AVCodec *codec;
+        const char *enc_config;
+
+        codec = avcodec_find_encoder(ic->streams[i]->codecpar->codec_id);
+        if (!codec) {
+            av_log(s, AV_LOG_ERROR, "no encoder found for codec id %i\n", ic->streams[i]->codecpar->codec_id);
+            return AVERROR(EINVAL);
+        }
+        if (codec->type == AVMEDIA_TYPE_AUDIO)
+            opt_audio_codec(o, "c:a", codec->name);
+        else if (codec->type == AVMEDIA_TYPE_VIDEO)
+            opt_video_codec(o, "c:v", codec->name);
+        ost   = new_output_stream(o, s, codec->type, -1);
+        st    = ost->st;
+
+        avcodec_get_context_defaults3(st->codec, codec);
+        enc_config = av_stream_get_recommended_encoder_configuration(ic->streams[i]);
+        if (enc_config) {
+            AVDictionary *opts = NULL;
+            av_dict_parse_string(&opts, enc_config, "=", ",", 0);
+            av_opt_set_dict2(st->codec, &opts, AV_OPT_SEARCH_CHILDREN);
+            av_dict_free(&opts);
+        }
+
+        if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
+            choose_sample_fmt(st, codec);
+        else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
+            choose_pixel_fmt(st, st->codec, codec, st->codecpar->format);
+        avcodec_copy_context(ost->enc_ctx, st->codec);
+        if (enc_config)
+            av_dict_parse_string(&ost->encoder_opts, enc_config, "=", ",", 0);
+    }
+
+    avformat_close_input(&ic);
+    return err;
+}
+
+static void init_output_filter(OutputFilter *ofilter, OptionsContext *o,
+                               AVFormatContext *oc)
+{
+    OutputStream *ost;
+
+    switch (ofilter->type) {
+    case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(o, oc, -1); break;
+    case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc, -1); break;
+    default:
+        av_log(NULL, AV_LOG_FATAL, "Only video and audio filters are supported "
+               "currently.\n");
+        exit_program(1);
+    }
+
+    ost->source_index = -1;
+    ost->filter       = ofilter;
+
+    ofilter->ost      = ost;
+    ofilter->format   = -1;
+
+    if (ost->stream_copy) {
+        av_log(NULL, AV_LOG_ERROR, "Streamcopy requested for output stream %d:%d, "
+               "which is fed from a complex filtergraph. Filtering and streamcopy "
+               "cannot be used together.\n", ost->file_index, ost->index);
+        exit_program(1);
+    }
+
+    if (ost->avfilter && (ost->filters || ost->filters_script)) {
+        const char *opt = ost->filters ? "-vf/-af/-filter" : "-filter_script";
+        av_log(NULL, AV_LOG_ERROR,
+               "%s '%s' was specified through the %s option "
+               "for output stream %d:%d, which is fed from a complex filtergraph.\n"
+               "%s and -filter_complex cannot be used together for the same stream.\n",
+               ost->filters ? "Filtergraph" : "Filtergraph script",
+               ost->filters ? ost->filters : ost->filters_script,
+               opt, ost->file_index, ost->index, opt);
+        exit_program(1);
+    }
+
+    avfilter_inout_free(&ofilter->out_tmp);
+}
+
+static int init_complex_filters(void)
+{
+    int i, ret = 0;
+
+    for (i = 0; i < nb_filtergraphs; i++) {
+        ret = init_complex_filtergraph(filtergraphs[i]);
+        if (ret < 0)
+            return ret;
+    }
+    return 0;
+}
+
+static int open_output_file(OptionsContext *o, const char *filename)
+{
+    AVFormatContext *oc;
+    int i, j, err;
+    AVOutputFormat *file_oformat;
+    OutputFile *of;
+    OutputStream *ost;
+    InputStream  *ist;
+    AVDictionary *unused_opts = NULL;
+    AVDictionaryEntry *e = NULL;
+    int format_flags = 0;
+
+    if (o->stop_time != INT64_MAX && o->recording_time != INT64_MAX) {
+        o->stop_time = INT64_MAX;
+        av_log(NULL, AV_LOG_WARNING, "-t and -to cannot be used together; using -t.\n");
+    }
+
+    if (o->stop_time != INT64_MAX && o->recording_time == INT64_MAX) {
+        int64_t start_time = o->start_time == AV_NOPTS_VALUE ? 0 : o->start_time;
+        if (o->stop_time <= start_time) {
+            av_log(NULL, AV_LOG_ERROR, "-to value smaller than -ss; aborting.\n");
+            exit_program(1);
+        } else {
+            o->recording_time = o->stop_time - start_time;
+        }
+    }
+
+    GROW_ARRAY(output_files, nb_output_files);
+    of = av_mallocz(sizeof(*of));
+    if (!of)
+        exit_program(1);
+    output_files[nb_output_files - 1] = of;
+
+    of->ost_index      = nb_output_streams;
+    of->recording_time = o->recording_time;
+    of->start_time     = o->start_time;
+    of->limit_filesize = o->limit_filesize;
+    of->shortest       = o->shortest;
+    av_dict_copy(&of->opts, o->g->format_opts, 0);
+
+    if (!strcmp(filename, "-"))
+        filename = "pipe:";
+
+    err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
+    if (!oc) {
+        print_error(filename, err);
+        exit_program(1);
+    }
+
+    of->ctx = oc;
+    if (o->recording_time != INT64_MAX)
+        oc->duration = o->recording_time;
+
+    file_oformat= oc->oformat;
+    oc->interrupt_callback = int_cb;
+
+    e = av_dict_get(o->g->format_opts, "fflags", NULL, 0);
+    if (e) {
+        const AVOption *o = av_opt_find(oc, "fflags", NULL, 0, 0);
+        av_opt_eval_flags(oc, o, e->value, &format_flags);
+    }
+
+    /* create streams for all unlabeled output pads */
+    for (i = 0; i < nb_filtergraphs; i++) {
+        FilterGraph *fg = filtergraphs[i];
+        for (j = 0; j < fg->nb_outputs; j++) {
+            OutputFilter *ofilter = fg->outputs[j];
+
+            if (!ofilter->out_tmp || ofilter->out_tmp->name)
+                continue;
+
+            switch (ofilter->type) {
+            case AVMEDIA_TYPE_VIDEO:    o->video_disable    = 1; break;
+            case AVMEDIA_TYPE_AUDIO:    o->audio_disable    = 1; break;
+            case AVMEDIA_TYPE_SUBTITLE: o->subtitle_disable = 1; break;
+            }
+            init_output_filter(ofilter, o, oc);
+        }
+    }
+
+    /* ffserver seeking with date=... needs a date reference */
+    if (!strcmp(file_oformat->name, "ffm") &&
+        !(format_flags & AVFMT_FLAG_BITEXACT) &&
+        av_strstart(filename, "http:", NULL)) {
+        int err = parse_option(o, "metadata", "creation_time=now", options);
+        if (err < 0) {
+            print_error(filename, err);
+            exit_program(1);
+        }
+    }
+
+    if (!strcmp(file_oformat->name, "ffm") && !override_ffserver &&
+        av_strstart(filename, "http:", NULL)) {
+        int j;
+        /* special case for files sent to ffserver: we get the stream
+           parameters from ffserver */
+        int err = read_ffserver_streams(o, oc, filename);
+        if (err < 0) {
+            print_error(filename, err);
+            exit_program(1);
+        }
+        for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) {
+            ost = output_streams[j];
+            for (i = 0; i < nb_input_streams; i++) {
+                ist = input_streams[i];
+                if(ist->st->codecpar->codec_type == ost->st->codecpar->codec_type){
+                    ost->sync_ist= ist;
+                    ost->source_index= i;
+                    if(ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) ost->avfilter = av_strdup("anull");
+                    if(ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) ost->avfilter = av_strdup("null");
+                    ist->discard = 0;
+                    ist->st->discard = ist->user_set_discard;
+                    break;
+                }
+            }
+            if(!ost->sync_ist){
+                av_log(NULL, AV_LOG_FATAL, "Missing %s stream which is required by this ffm\n", av_get_media_type_string(ost->st->codecpar->codec_type));
+                exit_program(1);
+            }
+        }
+    } else if (!o->nb_stream_maps) {
+        char *subtitle_codec_name = NULL;
+        /* pick the "best" stream of each type */
+
+        /* video: highest resolution */
+        if (!o->video_disable && av_guess_codec(oc->oformat, NULL, filename, NULL, AVMEDIA_TYPE_VIDEO) != AV_CODEC_ID_NONE) {
+            int area = 0, idx = -1;
+            int qcr = avformat_query_codec(oc->oformat, oc->oformat->video_codec, 0);
+            for (i = 0; i < nb_input_streams; i++) {
+                int new_area;
+                ist = input_streams[i];
+                new_area = ist->st->codecpar->width * ist->st->codecpar->height + 100000000*!!ist->st->codec_info_nb_frames;
+                if((qcr!=MKTAG('A', 'P', 'I', 'C')) && (ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC))
+                    new_area = 1;
+                if (ist->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
+                    new_area > area) {
+                    if((qcr==MKTAG('A', 'P', 'I', 'C')) && !(ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC))
+                        continue;
+                    area = new_area;
+                    idx = i;
+                }
+            }
+            if (idx >= 0)
+                new_video_stream(o, oc, idx);
+        }
+
+        /* audio: most channels */
+        if (!o->audio_disable && av_guess_codec(oc->oformat, NULL, filename, NULL, AVMEDIA_TYPE_AUDIO) != AV_CODEC_ID_NONE) {
+            int best_score = 0, idx = -1;
+            for (i = 0; i < nb_input_streams; i++) {
+                int score;
+                ist = input_streams[i];
+                score = ist->st->codecpar->channels + 100000000*!!ist->st->codec_info_nb_frames;
+                if (ist->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
+                    score > best_score) {
+                    best_score = score;
+                    idx = i;
+                }
+            }
+            if (idx >= 0)
+                new_audio_stream(o, oc, idx);
+        }
+
+        /* subtitles: pick first */
+        MATCH_PER_TYPE_OPT(codec_names, str, subtitle_codec_name, oc, "s");
+        if (!o->subtitle_disable && (avcodec_find_encoder(oc->oformat->subtitle_codec) || subtitle_codec_name)) {
+            for (i = 0; i < nb_input_streams; i++)
+                if (input_streams[i]->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
+                    AVCodecDescriptor const *input_descriptor =
+                        avcodec_descriptor_get(input_streams[i]->st->codecpar->codec_id);
+                    AVCodecDescriptor const *output_descriptor = NULL;
+                    AVCodec const *output_codec =
+                        avcodec_find_encoder(oc->oformat->subtitle_codec);
+                    int input_props = 0, output_props = 0;
+                    if (output_codec)
+                        output_descriptor = avcodec_descriptor_get(output_codec->id);
+                    if (input_descriptor)
+                        input_props = input_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
+                    if (output_descriptor)
+                        output_props = output_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
+                    if (subtitle_codec_name ||
+                        input_props & output_props ||
+                        // Map dvb teletext which has neither property to any output subtitle encoder
+                        input_descriptor && output_descriptor &&
+                        (!input_descriptor->props ||
+                         !output_descriptor->props)) {
+                        new_subtitle_stream(o, oc, i);
+                        break;
+                    }
+                }
+        }
+        /* Data only if codec id match */
+        if (!o->data_disable ) {
+            enum AVCodecID codec_id = av_guess_codec(oc->oformat, NULL, filename, NULL, AVMEDIA_TYPE_DATA);
+            for (i = 0; codec_id != AV_CODEC_ID_NONE && i < nb_input_streams; i++) {
+                if (input_streams[i]->st->codecpar->codec_type == AVMEDIA_TYPE_DATA
+                    && input_streams[i]->st->codecpar->codec_id == codec_id )
+                    new_data_stream(o, oc, i);
+            }
+        }
+    } else {
+        for (i = 0; i < o->nb_stream_maps; i++) {
+            StreamMap *map = &o->stream_maps[i];
+
+            if (map->disabled)
+                continue;
+
+            if (map->linklabel) {
+                FilterGraph *fg;
+                OutputFilter *ofilter = NULL;
+                int j, k;
+
+                for (j = 0; j < nb_filtergraphs; j++) {
+                    fg = filtergraphs[j];
+                    for (k = 0; k < fg->nb_outputs; k++) {
+                        AVFilterInOut *out = fg->outputs[k]->out_tmp;
+                        if (out && !strcmp(out->name, map->linklabel)) {
+                            ofilter = fg->outputs[k];
+                            goto loop_end;
+                        }
+                    }
+                }
+loop_end:
+                if (!ofilter) {
+                    av_log(NULL, AV_LOG_FATAL, "Output with label '%s' does not exist "
+                           "in any defined filter graph, or was already used elsewhere.\n", map->linklabel);
+                    exit_program(1);
+                }
+                init_output_filter(ofilter, o, oc);
+            } else {
+                int src_idx = input_files[map->file_index]->ist_index + map->stream_index;
+
+                ist = input_streams[input_files[map->file_index]->ist_index + map->stream_index];
+                if(o->subtitle_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
+                    continue;
+                if(o->   audio_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
+                    continue;
+                if(o->   video_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+                    continue;
+                if(o->    data_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
+                    continue;
+
+                ost = NULL;
+                switch (ist->st->codecpar->codec_type) {
+                case AVMEDIA_TYPE_VIDEO:      ost = new_video_stream     (o, oc, src_idx); break;
+                case AVMEDIA_TYPE_AUDIO:      ost = new_audio_stream     (o, oc, src_idx); break;
+                case AVMEDIA_TYPE_SUBTITLE:   ost = new_subtitle_stream  (o, oc, src_idx); break;
+                case AVMEDIA_TYPE_DATA:       ost = new_data_stream      (o, oc, src_idx); break;
+                case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc, src_idx); break;
+                case AVMEDIA_TYPE_UNKNOWN:
+                    if (copy_unknown_streams) {
+                        ost = new_unknown_stream   (o, oc, src_idx);
+                        break;
+                    }
+                default:
+                    av_log(NULL, ignore_unknown_streams ? AV_LOG_WARNING : AV_LOG_FATAL,
+                           "Cannot map stream #%d:%d - unsupported type.\n",
+                           map->file_index, map->stream_index);
+                    if (!ignore_unknown_streams) {
+                        av_log(NULL, AV_LOG_FATAL,
+                               "If you want unsupported types ignored instead "
+                               "of failing, please use the -ignore_unknown option\n"
+                               "If you want them copied, please use -copy_unknown\n");
+                        exit_program(1);
+                    }
+                }
+                if (ost)
+                    ost->sync_ist = input_streams[  input_files[map->sync_file_index]->ist_index
+                                                  + map->sync_stream_index];
+            }
+        }
+    }
+
+    /* handle attached files */
+    for (i = 0; i < o->nb_attachments; i++) {
+        AVIOContext *pb;
+        uint8_t *attachment;
+        const char *p;
+        int64_t len;
+
+        if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
+            av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
+                   o->attachments[i]);
+            exit_program(1);
+        }
+        if ((len = avio_size(pb)) <= 0) {
+            av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
+                   o->attachments[i]);
+            exit_program(1);
+        }
+        if (!(attachment = av_malloc(len))) {
+            av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
+                   o->attachments[i]);
+            exit_program(1);
+        }
+        avio_read(pb, attachment, len);
+
+        ost = new_attachment_stream(o, oc, -1);
+        ost->stream_copy               = 0;
+        ost->attachment_filename       = o->attachments[i];
+        ost->st->codecpar->extradata      = attachment;
+        ost->st->codecpar->extradata_size = len;
+
+        p = strrchr(o->attachments[i], '/');
+        av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
+        avio_closep(&pb);
+    }
+
+#if FF_API_LAVF_AVCTX
+    for (i = nb_output_streams - oc->nb_streams; i < nb_output_streams; i++) { //for all streams of this output file
+        AVDictionaryEntry *e;
+        ost = output_streams[i];
+
+        if ((ost->stream_copy || ost->attachment_filename)
+            && (e = av_dict_get(o->g->codec_opts, "flags", NULL, AV_DICT_IGNORE_SUFFIX))
+            && (!e->key[5] || check_stream_specifier(oc, ost->st, e->key+6)))
+            if (av_opt_set(ost->st->codec, "flags", e->value, 0) < 0)
+                exit_program(1);
+    }
+#endif
+
+    if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
+        av_dump_format(oc, nb_output_files - 1, oc->filename, 1);
+        av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", nb_output_files - 1);
+        exit_program(1);
+    }
+
+    /* check if all codec options have been used */
+    unused_opts = strip_specifiers(o->g->codec_opts);
+    for (i = of->ost_index; i < nb_output_streams; i++) {
+        e = NULL;
+        while ((e = av_dict_get(output_streams[i]->encoder_opts, "", e,
+                                AV_DICT_IGNORE_SUFFIX)))
+            av_dict_set(&unused_opts, e->key, NULL, 0);
+    }
+
+    e = NULL;
+    while ((e = av_dict_get(unused_opts, "", e, AV_DICT_IGNORE_SUFFIX))) {
+        const AVClass *class = avcodec_get_class();
+        const AVOption *option = av_opt_find(&class, e->key, NULL, 0,
+                                             AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
+        const AVClass *fclass = avformat_get_class();
+        const AVOption *foption = av_opt_find(&fclass, e->key, NULL, 0,
+                                              AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
+        if (!option || foption)
+            continue;
+
+
+        if (!(option->flags & AV_OPT_FLAG_ENCODING_PARAM)) {
+            av_log(NULL, AV_LOG_ERROR, "Codec AVOption %s (%s) specified for "
+                   "output file #%d (%s) is not an encoding option.\n", e->key,
+                   option->help ? option->help : "", nb_output_files - 1,
+                   filename);
+            exit_program(1);
+        }
+
+        // gop_timecode is injected by generic code but not always used
+        if (!strcmp(e->key, "gop_timecode"))
+            continue;
+
+        av_log(NULL, AV_LOG_WARNING, "Codec AVOption %s (%s) specified for "
+               "output file #%d (%s) has not been used for any stream. The most "
+               "likely reason is either wrong type (e.g. a video option with "
+               "no video streams) or that it is a private option of some encoder "
+               "which was not actually used for any stream.\n", e->key,
+               option->help ? option->help : "", nb_output_files - 1, filename);
+    }
+    av_dict_free(&unused_opts);
+
+    /* set the decoding_needed flags and create simple filtergraphs */
+    for (i = of->ost_index; i < nb_output_streams; i++) {
+        OutputStream *ost = output_streams[i];
+
+        if (ost->encoding_needed && ost->source_index >= 0) {
+            InputStream *ist = input_streams[ost->source_index];
+            ist->decoding_needed |= DECODING_FOR_OST;
+
+            if (ost->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
+                ost->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+                err = init_simple_filtergraph(ist, ost);
+                if (err < 0) {
+                    av_log(NULL, AV_LOG_ERROR,
+                           "Error initializing a simple filtergraph between streams "
+                           "%d:%d->%d:%d\n", ist->file_index, ost->source_index,
+                           nb_output_files - 1, ost->st->index);
+                    exit_program(1);
+                }
+            }
+        }
+
+        /* set the filter output constraints */
+        if (ost->filter) {
+            OutputFilter *f = ost->filter;
+            int count;
+            switch (ost->enc_ctx->codec_type) {
+            case AVMEDIA_TYPE_VIDEO:
+                f->frame_rate = ost->frame_rate;
+                f->width      = ost->enc_ctx->width;
+                f->height     = ost->enc_ctx->height;
+                if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
+                    f->format = ost->enc_ctx->pix_fmt;
+                } else if (ost->enc->pix_fmts) {
+                    count = 0;
+                    while (ost->enc->pix_fmts[count] != AV_PIX_FMT_NONE)
+                        count++;
+                    f->formats = av_mallocz_array(count + 1, sizeof(*f->formats));
+                    if (!f->formats)
+                        exit_program(1);
+                    memcpy(f->formats, ost->enc->pix_fmts, (count + 1) * sizeof(*f->formats));
+                }
+                break;
+            case AVMEDIA_TYPE_AUDIO:
+                if (ost->enc_ctx->sample_fmt != AV_SAMPLE_FMT_NONE) {
+                    f->format = ost->enc_ctx->sample_fmt;
+                } else if (ost->enc->sample_fmts) {
+                    count = 0;
+                    while (ost->enc->sample_fmts[count] != AV_SAMPLE_FMT_NONE)
+                        count++;
+                    f->formats = av_mallocz_array(count + 1, sizeof(*f->formats));
+                    if (!f->formats)
+                        exit_program(1);
+                    memcpy(f->formats, ost->enc->sample_fmts, (count + 1) * sizeof(*f->formats));
+                }
+                if (ost->enc_ctx->sample_rate) {
+                    f->sample_rate = ost->enc_ctx->sample_rate;
+                } else if (ost->enc->supported_samplerates) {
+                    count = 0;
+                    while (ost->enc->supported_samplerates[count])
+                        count++;
+                    f->sample_rates = av_mallocz_array(count + 1, sizeof(*f->sample_rates));
+                    if (!f->sample_rates)
+                        exit_program(1);
+                    memcpy(f->sample_rates, ost->enc->supported_samplerates,
+                           (count + 1) * sizeof(*f->sample_rates));
+                }
+                if (ost->enc_ctx->channels) {
+                    f->channel_layout = av_get_default_channel_layout(ost->enc_ctx->channels);
+                } else if (ost->enc->channel_layouts) {
+                    count = 0;
+                    while (ost->enc->channel_layouts[count])
+                        count++;
+                    f->channel_layouts = av_mallocz_array(count + 1, sizeof(*f->channel_layouts));
+                    if (!f->channel_layouts)
+                        exit_program(1);
+                    memcpy(f->channel_layouts, ost->enc->channel_layouts,
+                           (count + 1) * sizeof(*f->channel_layouts));
+                }
+                break;
+            }
+        }
+    }
+
+    /* check filename in case of an image number is expected */
+    if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
+        if (!av_filename_number_test(oc->filename)) {
+            print_error(oc->filename, AVERROR(EINVAL));
+            exit_program(1);
+        }
+    }
+
+    if (!(oc->oformat->flags & AVFMT_NOSTREAMS) && !input_stream_potentially_available) {
+        av_log(NULL, AV_LOG_ERROR,
+               "No input streams but output needs an input stream\n");
+        exit_program(1);
+    }
+
+    if (!(oc->oformat->flags & AVFMT_NOFILE)) {
+        /* test if it already exists to avoid losing precious files */
+        assert_file_overwrite(filename);
+
+        /* open the file */
+        if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
+                              &oc->interrupt_callback,
+                              &of->opts)) < 0) {
+            print_error(filename, err);
+            exit_program(1);
+        }
+    } else if (strcmp(oc->oformat->name, "image2")==0 && !av_filename_number_test(filename))
+        assert_file_overwrite(filename);
+
+    if (o->mux_preload) {
+        av_dict_set_int(&of->opts, "preload", o->mux_preload*AV_TIME_BASE, 0);
+    }
+    oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
+
+    /* copy metadata */
+    for (i = 0; i < o->nb_metadata_map; i++) {
+        char *p;
+        int in_file_index = strtol(o->metadata_map[i].u.str, &p, 0);
+
+        if (in_file_index >= nb_input_files) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d while processing metadata maps\n", in_file_index);
+            exit_program(1);
+        }
+        copy_metadata(o->metadata_map[i].specifier, *p ? p + 1 : p, oc,
+                      in_file_index >= 0 ?
+                      input_files[in_file_index]->ctx : NULL, o);
+    }
+
+    /* copy chapters */
+    if (o->chapters_input_file >= nb_input_files) {
+        if (o->chapters_input_file == INT_MAX) {
+            /* copy chapters from the first input file that has them*/
+            o->chapters_input_file = -1;
+            for (i = 0; i < nb_input_files; i++)
+                if (input_files[i]->ctx->nb_chapters) {
+                    o->chapters_input_file = i;
+                    break;
+                }
+        } else {
+            av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
+                   o->chapters_input_file);
+            exit_program(1);
+        }
+    }
+    if (o->chapters_input_file >= 0)
+        copy_chapters(input_files[o->chapters_input_file], of,
+                      !o->metadata_chapters_manual);
+
+    /* copy global metadata by default */
+    if (!o->metadata_global_manual && nb_input_files){
+        av_dict_copy(&oc->metadata, input_files[0]->ctx->metadata,
+                     AV_DICT_DONT_OVERWRITE);
+        if(o->recording_time != INT64_MAX)
+            av_dict_set(&oc->metadata, "duration", NULL, 0);
+        av_dict_set(&oc->metadata, "creation_time", NULL, 0);
+    }
+    if (!o->metadata_streams_manual)
+        for (i = of->ost_index; i < nb_output_streams; i++) {
+            InputStream *ist;
+            if (output_streams[i]->source_index < 0)         /* this is true e.g. for attached files */
+                continue;
+            ist = input_streams[output_streams[i]->source_index];
+            av_dict_copy(&output_streams[i]->st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
+            if (!output_streams[i]->stream_copy) {
+                av_dict_set(&output_streams[i]->st->metadata, "encoder", NULL, 0);
+            }
+        }
+
+    /* process manually set programs */
+    for (i = 0; i < o->nb_program; i++) {
+        const char *p = o->program[i].u.str;
+        int progid = i+1;
+        AVProgram *program;
+
+        while(*p) {
+            const char *p2 = av_get_token(&p, ":");
+            const char *to_dealloc = p2;
+            char *key;
+            if (!p2)
+                break;
+
+            if(*p) p++;
+
+            key = av_get_token(&p2, "=");
+            if (!key || !*p2) {
+                av_freep(&to_dealloc);
+                av_freep(&key);
+                break;
+            }
+            p2++;
+
+            if (!strcmp(key, "program_num"))
+                progid = strtol(p2, NULL, 0);
+            av_freep(&to_dealloc);
+            av_freep(&key);
+        }
+
+        program = av_new_program(oc, progid);
+
+        p = o->program[i].u.str;
+        while(*p) {
+            const char *p2 = av_get_token(&p, ":");
+            const char *to_dealloc = p2;
+            char *key;
+            if (!p2)
+                break;
+            if(*p) p++;
+
+            key = av_get_token(&p2, "=");
+            if (!key) {
+                av_log(NULL, AV_LOG_FATAL,
+                       "No '=' character in program string %s.\n",
+                       p2);
+                exit_program(1);
+            }
+            if (!*p2)
+                exit_program(1);
+            p2++;
+
+            if (!strcmp(key, "title")) {
+                av_dict_set(&program->metadata, "title", p2, 0);
+            } else if (!strcmp(key, "program_num")) {
+            } else if (!strcmp(key, "st")) {
+                int st_num = strtol(p2, NULL, 0);
+                av_program_add_stream_index(oc, progid, st_num);
+            } else {
+                av_log(NULL, AV_LOG_FATAL, "Unknown program key %s.\n", key);
+                exit_program(1);
+            }
+            av_freep(&to_dealloc);
+            av_freep(&key);
+        }
+    }
+
+    /* process manually set metadata */
+    for (i = 0; i < o->nb_metadata; i++) {
+        AVDictionary **m;
+        char type, *val;
+        const char *stream_spec;
+        int index = 0, j, ret = 0;
+
+        val = strchr(o->metadata[i].u.str, '=');
+        if (!val) {
+            av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
+                   o->metadata[i].u.str);
+            exit_program(1);
+        }
+        *val++ = 0;
+
+        parse_meta_type(o->metadata[i].specifier, &type, &index, &stream_spec);
+        if (type == 's') {
+            for (j = 0; j < oc->nb_streams; j++) {
+                ost = output_streams[nb_output_streams - oc->nb_streams + j];
+                if ((ret = check_stream_specifier(oc, oc->streams[j], stream_spec)) > 0) {
+                    if (!strcmp(o->metadata[i].u.str, "rotate")) {
+                        char *tail;
+                        double theta = av_strtod(val, &tail);
+                        if (!*tail) {
+                            ost->rotate_overridden = 1;
+                            ost->rotate_override_value = theta;
+                        }
+                    } else {
+                        av_dict_set(&oc->streams[j]->metadata, o->metadata[i].u.str, *val ? val : NULL, 0);
+                    }
+                } else if (ret < 0)
+                    exit_program(1);
+            }
+        }
+        else {
+            switch (type) {
+            case 'g':
+                m = &oc->metadata;
+                break;
+            case 'c':
+                if (index < 0 || index >= oc->nb_chapters) {
+                    av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
+                    exit_program(1);
+                }
+                m = &oc->chapters[index]->metadata;
+                break;
+            case 'p':
+                if (index < 0 || index >= oc->nb_programs) {
+                    av_log(NULL, AV_LOG_FATAL, "Invalid program index %d in metadata specifier.\n", index);
+                    exit_program(1);
+                }
+                m = &oc->programs[index]->metadata;
+                break;
+            default:
+                av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
+                exit_program(1);
+            }
+            av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
+        }
+    }
+
+    return 0;
+}
+
+static int opt_target(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
+    static const char *const frame_rates[] = { "25", "30000/1001", "24000/1001" };
+
+    if (!strncmp(arg, "pal-", 4)) {
+        norm = PAL;
+        arg += 4;
+    } else if (!strncmp(arg, "ntsc-", 5)) {
+        norm = NTSC;
+        arg += 5;
+    } else if (!strncmp(arg, "film-", 5)) {
+        norm = FILM;
+        arg += 5;
+    } else {
+        /* Try to determine PAL/NTSC by peeking in the input files */
+        if (nb_input_files) {
+            int i, j, fr;
+            for (j = 0; j < nb_input_files; j++) {
+                for (i = 0; i < input_files[j]->nb_streams; i++) {
+                    AVStream *st = input_files[j]->ctx->streams[i];
+                    if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
+                        continue;
+                    fr = st->time_base.den * 1000 / st->time_base.num;
+                    if (fr == 25000) {
+                        norm = PAL;
+                        break;
+                    } else if ((fr == 29970) || (fr == 23976)) {
+                        norm = NTSC;
+                        break;
+                    }
+                }
+                if (norm != UNKNOWN)
+                    break;
+            }
+        }
+        if (norm != UNKNOWN)
+            av_log(NULL, AV_LOG_INFO, "Assuming %s for target.\n", norm == PAL ? "PAL" : "NTSC");
+    }
+
+    if (norm == UNKNOWN) {
+        av_log(NULL, AV_LOG_FATAL, "Could not determine norm (PAL/NTSC/NTSC-Film) for target.\n");
+        av_log(NULL, AV_LOG_FATAL, "Please prefix target with \"pal-\", \"ntsc-\" or \"film-\",\n");
+        av_log(NULL, AV_LOG_FATAL, "or set a framerate with \"-r xxx\".\n");
+        exit_program(1);
+    }
+
+    if (!strcmp(arg, "vcd")) {
+        opt_video_codec(o, "c:v", "mpeg1video");
+        opt_audio_codec(o, "c:a", "mp2");
+        parse_option(o, "f", "vcd", options);
+
+        parse_option(o, "s", norm == PAL ? "352x288" : "352x240", options);
+        parse_option(o, "r", frame_rates[norm], options);
+        opt_default(NULL, "g", norm == PAL ? "15" : "18");
+
+        opt_default(NULL, "b:v", "1150000");
+        opt_default(NULL, "maxrate:v", "1150000");
+        opt_default(NULL, "minrate:v", "1150000");
+        opt_default(NULL, "bufsize:v", "327680"); // 40*1024*8;
+
+        opt_default(NULL, "b:a", "224000");
+        parse_option(o, "ar", "44100", options);
+        parse_option(o, "ac", "2", options);
+
+        opt_default(NULL, "packetsize", "2324");
+        opt_default(NULL, "muxrate", "1411200"); // 2352 * 75 * 8;
+
+        /* We have to offset the PTS, so that it is consistent with the SCR.
+           SCR starts at 36000, but the first two packs contain only padding
+           and the first pack from the other stream, respectively, may also have
+           been written before.
+           So the real data starts at SCR 36000+3*1200. */
+        o->mux_preload = (36000 + 3 * 1200) / 90000.0; // 0.44
+    } else if (!strcmp(arg, "svcd")) {
+
+        opt_video_codec(o, "c:v", "mpeg2video");
+        opt_audio_codec(o, "c:a", "mp2");
+        parse_option(o, "f", "svcd", options);
+
+        parse_option(o, "s", norm == PAL ? "480x576" : "480x480", options);
+        parse_option(o, "r", frame_rates[norm], options);
+        parse_option(o, "pix_fmt", "yuv420p", options);
+        opt_default(NULL, "g", norm == PAL ? "15" : "18");
+
+        opt_default(NULL, "b:v", "2040000");
+        opt_default(NULL, "maxrate:v", "2516000");
+        opt_default(NULL, "minrate:v", "0"); // 1145000;
+        opt_default(NULL, "bufsize:v", "1835008"); // 224*1024*8;
+        opt_default(NULL, "scan_offset", "1");
+
+        opt_default(NULL, "b:a", "224000");
+        parse_option(o, "ar", "44100", options);
+
+        opt_default(NULL, "packetsize", "2324");
+
+    } else if (!strcmp(arg, "dvd")) {
+
+        opt_video_codec(o, "c:v", "mpeg2video");
+        opt_audio_codec(o, "c:a", "ac3");
+        parse_option(o, "f", "dvd", options);
+
+        parse_option(o, "s", norm == PAL ? "720x576" : "720x480", options);
+        parse_option(o, "r", frame_rates[norm], options);
+        parse_option(o, "pix_fmt", "yuv420p", options);
+        opt_default(NULL, "g", norm == PAL ? "15" : "18");
+
+        opt_default(NULL, "b:v", "6000000");
+        opt_default(NULL, "maxrate:v", "9000000");
+        opt_default(NULL, "minrate:v", "0"); // 1500000;
+        opt_default(NULL, "bufsize:v", "1835008"); // 224*1024*8;
+
+        opt_default(NULL, "packetsize", "2048");  // from www.mpucoder.com: DVD sectors contain 2048 bytes of data, this is also the size of one pack.
+        opt_default(NULL, "muxrate", "10080000"); // from mplex project: data_rate = 1260000. mux_rate = data_rate * 8
+
+        opt_default(NULL, "b:a", "448000");
+        parse_option(o, "ar", "48000", options);
+
+    } else if (!strncmp(arg, "dv", 2)) {
+
+        parse_option(o, "f", "dv", options);
+
+        parse_option(o, "s", norm == PAL ? "720x576" : "720x480", options);
+        parse_option(o, "pix_fmt", !strncmp(arg, "dv50", 4) ? "yuv422p" :
+                          norm == PAL ? "yuv420p" : "yuv411p", options);
+        parse_option(o, "r", frame_rates[norm], options);
+
+        parse_option(o, "ar", "48000", options);
+        parse_option(o, "ac", "2", options);
+
+    } else {
+        av_log(NULL, AV_LOG_ERROR, "Unknown target: %s\n", arg);
+        return AVERROR(EINVAL);
+    }
+
+    av_dict_copy(&o->g->codec_opts,  codec_opts, AV_DICT_DONT_OVERWRITE);
+    av_dict_copy(&o->g->format_opts, format_opts, AV_DICT_DONT_OVERWRITE);
+
+    return 0;
+}
+
+static int opt_vstats_file(void *optctx, const char *opt, const char *arg)
+{
+    av_free (vstats_filename);
+    vstats_filename = av_strdup (arg);
+    return 0;
+}
+
+static int opt_vstats(void *optctx, const char *opt, const char *arg)
+{
+    char filename[40];
+    time_t today2 = time(NULL);
+    struct tm *today = localtime(&today2);
+
+    if (!today) { // maybe tomorrow
+        av_log(NULL, AV_LOG_FATAL, "Unable to get current time: %s\n", strerror(errno));
+        exit_program(1);
+    }
+
+    snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
+             today->tm_sec);
+    return opt_vstats_file(NULL, opt, filename);
+}
+
+static int opt_video_frames(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "frames:v", arg, options);
+}
+
+static int opt_audio_frames(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "frames:a", arg, options);
+}
+
+static int opt_data_frames(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "frames:d", arg, options);
+}
+
+static int opt_default_new(OptionsContext *o, const char *opt, const char *arg)
+{
+    int ret;
+    AVDictionary *cbak = codec_opts;
+    AVDictionary *fbak = format_opts;
+    codec_opts = NULL;
+    format_opts = NULL;
+
+    ret = opt_default(NULL, opt, arg);
+
+    av_dict_copy(&o->g->codec_opts , codec_opts, 0);
+    av_dict_copy(&o->g->format_opts, format_opts, 0);
+    av_dict_free(&codec_opts);
+    av_dict_free(&format_opts);
+    codec_opts = cbak;
+    format_opts = fbak;
+
+    return ret;
+}
+
+static int opt_preset(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    FILE *f=NULL;
+    char filename[1000], line[1000], tmp_line[1000];
+    const char *codec_name = NULL;
+
+    tmp_line[0] = *opt;
+    tmp_line[1] = 0;
+    MATCH_PER_TYPE_OPT(codec_names, str, codec_name, NULL, tmp_line);
+
+    if (!(f = get_preset_file(filename, sizeof(filename), arg, *opt == 'f', codec_name))) {
+        if(!strncmp(arg, "libx264-lossless", strlen("libx264-lossless"))){
+            av_log(NULL, AV_LOG_FATAL, "Please use -preset <speed> -qp 0\n");
+        }else
+            av_log(NULL, AV_LOG_FATAL, "File for preset '%s' not found\n", arg);
+        exit_program(1);
+    }
+
+    while (fgets(line, sizeof(line), f)) {
+        char *key = tmp_line, *value, *endptr;
+
+        if (strcspn(line, "#\n\r") == 0)
+            continue;
+        av_strlcpy(tmp_line, line, sizeof(tmp_line));
+        if (!av_strtok(key,   "=",    &value) ||
+            !av_strtok(value, "\r\n", &endptr)) {
+            av_log(NULL, AV_LOG_FATAL, "%s: Invalid syntax: '%s'\n", filename, line);
+            exit_program(1);
+        }
+        av_log(NULL, AV_LOG_DEBUG, "ffpreset[%s]: set '%s' = '%s'\n", filename, key, value);
+
+        if      (!strcmp(key, "acodec")) opt_audio_codec   (o, key, value);
+        else if (!strcmp(key, "vcodec")) opt_video_codec   (o, key, value);
+        else if (!strcmp(key, "scodec")) opt_subtitle_codec(o, key, value);
+        else if (!strcmp(key, "dcodec")) opt_data_codec    (o, key, value);
+        else if (opt_default_new(o, key, value) < 0) {
+            av_log(NULL, AV_LOG_FATAL, "%s: Invalid option or argument: '%s', parsed as '%s' = '%s'\n",
+                   filename, line, key, value);
+            exit_program(1);
+        }
+    }
+
+    fclose(f);
+
+    return 0;
+}
+
+static int opt_old2new(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    char *s = av_asprintf("%s:%c", opt + 1, *opt);
+    int ret = parse_option(o, s, arg, options);
+    av_free(s);
+    return ret;
+}
+
+static int opt_bitrate(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+
+    if(!strcmp(opt, "ab")){
+        av_dict_set(&o->g->codec_opts, "b:a", arg, 0);
+        return 0;
+    } else if(!strcmp(opt, "b")){
+        av_log(NULL, AV_LOG_WARNING, "Please use -b:a or -b:v, -b is ambiguous\n");
+        av_dict_set(&o->g->codec_opts, "b:v", arg, 0);
+        return 0;
+    }
+    av_dict_set(&o->g->codec_opts, opt, arg, 0);
+    return 0;
+}
+
+static int opt_qscale(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    char *s;
+    int ret;
+    if(!strcmp(opt, "qscale")){
+        av_log(NULL, AV_LOG_WARNING, "Please use -q:a or -q:v, -qscale is ambiguous\n");
+        return parse_option(o, "q:v", arg, options);
+    }
+    s = av_asprintf("q%s", opt + 6);
+    ret = parse_option(o, s, arg, options);
+    av_free(s);
+    return ret;
+}
+
+static int opt_profile(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    if(!strcmp(opt, "profile")){
+        av_log(NULL, AV_LOG_WARNING, "Please use -profile:a or -profile:v, -profile is ambiguous\n");
+        av_dict_set(&o->g->codec_opts, "profile:v", arg, 0);
+        return 0;
+    }
+    av_dict_set(&o->g->codec_opts, opt, arg, 0);
+    return 0;
+}
+
+static int opt_video_filters(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "filter:v", arg, options);
+}
+
+static int opt_audio_filters(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "filter:a", arg, options);
+}
+
+static int opt_vsync(void *optctx, const char *opt, const char *arg)
+{
+    if      (!av_strcasecmp(arg, "cfr"))         video_sync_method = VSYNC_CFR;
+    else if (!av_strcasecmp(arg, "vfr"))         video_sync_method = VSYNC_VFR;
+    else if (!av_strcasecmp(arg, "passthrough")) video_sync_method = VSYNC_PASSTHROUGH;
+    else if (!av_strcasecmp(arg, "drop"))        video_sync_method = VSYNC_DROP;
+
+    if (video_sync_method == VSYNC_AUTO)
+        video_sync_method = parse_number_or_die("vsync", arg, OPT_INT, VSYNC_AUTO, VSYNC_VFR);
+    return 0;
+}
+
+static int opt_timecode(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    char *tcr = av_asprintf("timecode=%s", arg);
+    int ret = parse_option(o, "metadata:g", tcr, options);
+    if (ret >= 0)
+        ret = av_dict_set(&o->g->codec_opts, "gop_timecode", arg, 0);
+    av_free(tcr);
+    return ret;
+}
+
+static int opt_channel_layout(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    char layout_str[32];
+    char *stream_str;
+    char *ac_str;
+    int ret, channels, ac_str_size;
+    uint64_t layout;
+
+    layout = av_get_channel_layout(arg);
+    if (!layout) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown channel layout: %s\n", arg);
+        return AVERROR(EINVAL);
+    }
+    snprintf(layout_str, sizeof(layout_str), "%"PRIu64, layout);
+    ret = opt_default_new(o, opt, layout_str);
+    if (ret < 0)
+        return ret;
+
+    /* set 'ac' option based on channel layout */
+    channels = av_get_channel_layout_nb_channels(layout);
+    snprintf(layout_str, sizeof(layout_str), "%d", channels);
+    stream_str = strchr(opt, ':');
+    ac_str_size = 3 + (stream_str ? strlen(stream_str) : 0);
+    ac_str = av_mallocz(ac_str_size);
+    if (!ac_str)
+        return AVERROR(ENOMEM);
+    av_strlcpy(ac_str, "ac", 3);
+    if (stream_str)
+        av_strlcat(ac_str, stream_str, ac_str_size);
+    ret = parse_option(o, ac_str, layout_str, options);
+    av_free(ac_str);
+
+    return ret;
+}
+
+static int opt_audio_qscale(void *optctx, const char *opt, const char *arg)
+{
+    OptionsContext *o = optctx;
+    return parse_option(o, "q:a", arg, options);
+}
+
+static int opt_filter_complex(void *optctx, const char *opt, const char *arg)
+{
+    GROW_ARRAY(filtergraphs, nb_filtergraphs);
+    if (!(filtergraphs[nb_filtergraphs - 1] = av_mallocz(sizeof(*filtergraphs[0]))))
+        return AVERROR(ENOMEM);
+    filtergraphs[nb_filtergraphs - 1]->index      = nb_filtergraphs - 1;
+    filtergraphs[nb_filtergraphs - 1]->graph_desc = av_strdup(arg);
+    if (!filtergraphs[nb_filtergraphs - 1]->graph_desc)
+        return AVERROR(ENOMEM);
+
+    input_stream_potentially_available = 1;
+
+    return 0;
+}
+
+static int opt_filter_complex_script(void *optctx, const char *opt, const char *arg)
+{
+    uint8_t *graph_desc = read_file(arg);
+    if (!graph_desc)
+        return AVERROR(EINVAL);
+
+    GROW_ARRAY(filtergraphs, nb_filtergraphs);
+    if (!(filtergraphs[nb_filtergraphs - 1] = av_mallocz(sizeof(*filtergraphs[0]))))
+        return AVERROR(ENOMEM);
+    filtergraphs[nb_filtergraphs - 1]->index      = nb_filtergraphs - 1;
+    filtergraphs[nb_filtergraphs - 1]->graph_desc = graph_desc;
+
+    input_stream_potentially_available = 1;
+
+    return 0;
+}
+
+void show_help_default(const char *opt, const char *arg)
+{
+    /* per-file options have at least one of those set */
+    const int per_file = OPT_SPEC | OPT_OFFSET | OPT_PERFILE;
+    int show_advanced = 0, show_avoptions = 0;
+
+    if (opt && *opt) {
+        if (!strcmp(opt, "long"))
+            show_advanced = 1;
+        else if (!strcmp(opt, "full"))
+            show_advanced = show_avoptions = 1;
+        else
+            av_log(NULL, AV_LOG_ERROR, "Unknown help option '%s'.\n", opt);
+    }
+
+    show_usage();
+
+    printf("Getting help:\n"
+           "    -h      -- print basic options\n"
+           "    -h long -- print more options\n"
+           "    -h full -- print all options (including all format and codec specific options, very long)\n"
+           "    -h type=name -- print all options for the named decoder/encoder/demuxer/muxer/filter\n"
+           "    See man %s for detailed description of the options.\n"
+           "\n", program_name);
+
+    show_help_options(options, "Print help / information / capabilities:",
+                      OPT_EXIT, 0, 0);
+
+    show_help_options(options, "Global options (affect whole program "
+                      "instead of just one file:",
+                      0, per_file | OPT_EXIT | OPT_EXPERT, 0);
+    if (show_advanced)
+        show_help_options(options, "Advanced global options:", OPT_EXPERT,
+                          per_file | OPT_EXIT, 0);
+
+    show_help_options(options, "Per-file main options:", 0,
+                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE |
+                      OPT_EXIT, per_file);
+    if (show_advanced)
+        show_help_options(options, "Advanced per-file options:",
+                          OPT_EXPERT, OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE, per_file);
+
+    show_help_options(options, "Video options:",
+                      OPT_VIDEO, OPT_EXPERT | OPT_AUDIO, 0);
+    if (show_advanced)
+        show_help_options(options, "Advanced Video options:",
+                          OPT_EXPERT | OPT_VIDEO, OPT_AUDIO, 0);
+
+    show_help_options(options, "Audio options:",
+                      OPT_AUDIO, OPT_EXPERT | OPT_VIDEO, 0);
+    if (show_advanced)
+        show_help_options(options, "Advanced Audio options:",
+                          OPT_EXPERT | OPT_AUDIO, OPT_VIDEO, 0);
+    show_help_options(options, "Subtitle options:",
+                      OPT_SUBTITLE, 0, 0);
+    printf("\n");
+
+    if (show_avoptions) {
+        int flags = AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM;
+        show_help_children(avcodec_get_class(), flags);
+        show_help_children(avformat_get_class(), flags);
+#if CONFIG_SWSCALE
+        show_help_children(sws_get_class(), flags);
+#endif
+        show_help_children(swr_get_class(), AV_OPT_FLAG_AUDIO_PARAM);
+        show_help_children(avfilter_get_class(), AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM);
+    }
+}
+
+void show_usage(void)
+{
+    av_log(NULL, AV_LOG_INFO, "Hyper fast Audio and Video encoder\n");
+    av_log(NULL, AV_LOG_INFO, "usage: %s [options] [[infile options] -i infile]... {[outfile options] outfile}...\n", program_name);
+    av_log(NULL, AV_LOG_INFO, "\n");
+}
+
+enum OptGroup {
+    GROUP_OUTFILE,
+    GROUP_INFILE,
+};
+
+static const OptionGroupDef groups[] = {
+    [GROUP_OUTFILE] = { "output url",  NULL, OPT_OUTPUT },
+    [GROUP_INFILE]  = { "input url",   "i",  OPT_INPUT },
+};
+
+static int open_files(OptionGroupList *l, const char *inout,
+                      int (*open_file)(OptionsContext*, const char*))
+{
+    int i, ret;
+
+    for (i = 0; i < l->nb_groups; i++) {
+        OptionGroup *g = &l->groups[i];
+        OptionsContext o;
+
+        init_options(&o);
+        o.g = g;
+
+        ret = parse_optgroup(&o, g);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error parsing options for %s file "
+                   "%s.\n", inout, g->arg);
+            return ret;
+        }
+
+        av_log(NULL, AV_LOG_DEBUG, "Opening an %s file: %s.\n", inout, g->arg);
+        ret = open_file(&o, g->arg);
+        uninit_options(&o);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error opening %s file %s.\n",
+                   inout, g->arg);
+            return ret;
+        }
+        av_log(NULL, AV_LOG_DEBUG, "Successfully opened the file.\n");
+    }
+
+    return 0;
+}
+
+int ffmpeg_parse_options(int argc, char **argv)
+{
+    OptionParseContext octx;
+    uint8_t error[128];
+    int ret;
+
+    memset(&octx, 0, sizeof(octx));
+
+    /* split the commandline into an internal representation */
+    ret = split_commandline(&octx, argc, argv, options, groups,
+                            FF_ARRAY_ELEMS(groups));
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Error splitting the argument list: ");
+        goto fail;
+    }
+
+    /* apply global options */
+    ret = parse_optgroup(NULL, &octx.global_opts);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Error parsing global options: ");
+        goto fail;
+    }
+
+    /* configure terminal and setup signal handlers */
+    term_init();
+
+    /* open input files */
+    ret = open_files(&octx.groups[GROUP_INFILE], "input", open_input_file);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Error opening input files: ");
+        goto fail;
+    }
+
+    /* create the complex filtergraphs */
+    ret = init_complex_filters();
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Error initializing complex filters.\n");
+        goto fail;
+    }
+
+    /* open output files */
+    ret = open_files(&octx.groups[GROUP_OUTFILE], "output", open_output_file);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Error opening output files: ");
+        goto fail;
+    }
+
+    check_filter_outputs();
+
+fail:
+    uninit_parse_context(&octx);
+    if (ret < 0) {
+        av_strerror(ret, error, sizeof(error));
+        av_log(NULL, AV_LOG_FATAL, "%s\n", error);
+    }
+    return ret;
+}
+
+static int opt_progress(void *optctx, const char *opt, const char *arg)
+{
+    AVIOContext *avio = NULL;
+    int ret;
+
+    if (!strcmp(arg, "-"))
+        arg = "pipe:";
+    ret = avio_open2(&avio, arg, AVIO_FLAG_WRITE, &int_cb, NULL);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Failed to open progress URL \"%s\": %s\n",
+               arg, av_err2str(ret));
+        return ret;
+    }
+    progress_avio = avio;
+    return 0;
+}
+
+#define OFFSET(x) offsetof(OptionsContext, x)
+const OptionDef options[] = {
+    /* main options */
+    CMDUTILS_COMMON_OPTIONS
+    { "f",              HAS_ARG | OPT_STRING | OPT_OFFSET |
+                        OPT_INPUT | OPT_OUTPUT,                      { .off       = OFFSET(format) },
+        "force format", "fmt" },
+    { "y",              OPT_BOOL,                                    {              &file_overwrite },
+        "overwrite output files" },
+    { "n",              OPT_BOOL,                                    {              &no_file_overwrite },
+        "never overwrite output files" },
+    { "ignore_unknown", OPT_BOOL,                                    {              &ignore_unknown_streams },
+        "Ignore unknown stream types" },
+    { "copy_unknown",   OPT_BOOL | OPT_EXPERT,                       {              &copy_unknown_streams },
+        "Copy unknown stream types" },
+    { "c",              HAS_ARG | OPT_STRING | OPT_SPEC |
+                        OPT_INPUT | OPT_OUTPUT,                      { .off       = OFFSET(codec_names) },
+        "codec name", "codec" },
+    { "codec",          HAS_ARG | OPT_STRING | OPT_SPEC |
+                        OPT_INPUT | OPT_OUTPUT,                      { .off       = OFFSET(codec_names) },
+        "codec name", "codec" },
+    { "pre",            HAS_ARG | OPT_STRING | OPT_SPEC |
+                        OPT_OUTPUT,                                  { .off       = OFFSET(presets) },
+        "preset name", "preset" },
+    { "map",            HAS_ARG | OPT_EXPERT | OPT_PERFILE |
+                        OPT_OUTPUT,                                  { .func_arg = opt_map },
+        "set input stream mapping",
+        "[-]input_file_id[:stream_specifier][,sync_file_id[:stream_specifier]]" },
+    { "map_channel",    HAS_ARG | OPT_EXPERT | OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_map_channel },
+        "map an audio channel from one stream to another", "file.stream.channel[:syncfile.syncstream]" },
+    { "map_metadata",   HAS_ARG | OPT_STRING | OPT_SPEC |
+                        OPT_OUTPUT,                                  { .off       = OFFSET(metadata_map) },
+        "set metadata information of outfile from infile",
+        "outfile[,metadata]:infile[,metadata]" },
+    { "map_chapters",   HAS_ARG | OPT_INT | OPT_EXPERT | OPT_OFFSET |
+                        OPT_OUTPUT,                                  { .off = OFFSET(chapters_input_file) },
+        "set chapters mapping", "input_file_index" },
+    { "t",              HAS_ARG | OPT_TIME | OPT_OFFSET |
+                        OPT_INPUT | OPT_OUTPUT,                      { .off = OFFSET(recording_time) },
+        "record or transcode \"duration\" seconds of audio/video",
+        "duration" },
+    { "to",             HAS_ARG | OPT_TIME | OPT_OFFSET | OPT_OUTPUT,  { .off = OFFSET(stop_time) },
+        "record or transcode stop time", "time_stop" },
+    { "fs",             HAS_ARG | OPT_INT64 | OPT_OFFSET | OPT_OUTPUT, { .off = OFFSET(limit_filesize) },
+        "set the limit file size in bytes", "limit_size" },
+    { "ss",             HAS_ARG | OPT_TIME | OPT_OFFSET |
+                        OPT_INPUT | OPT_OUTPUT,                      { .off = OFFSET(start_time) },
+        "set the start time offset", "time_off" },
+    { "sseof",          HAS_ARG | OPT_TIME | OPT_OFFSET |
+                        OPT_INPUT | OPT_OUTPUT,                      { .off = OFFSET(start_time_eof) },
+        "set the start time offset relative to EOF", "time_off" },
+    { "seek_timestamp", HAS_ARG | OPT_INT | OPT_OFFSET |
+                        OPT_INPUT,                                   { .off = OFFSET(seek_timestamp) },
+        "enable/disable seeking by timestamp with -ss" },
+    { "accurate_seek",  OPT_BOOL | OPT_OFFSET | OPT_EXPERT |
+                        OPT_INPUT,                                   { .off = OFFSET(accurate_seek) },
+        "enable/disable accurate seeking with -ss" },
+    { "itsoffset",      HAS_ARG | OPT_TIME | OPT_OFFSET |
+                        OPT_EXPERT | OPT_INPUT,                      { .off = OFFSET(input_ts_offset) },
+        "set the input ts offset", "time_off" },
+    { "itsscale",       HAS_ARG | OPT_DOUBLE | OPT_SPEC |
+                        OPT_EXPERT | OPT_INPUT,                      { .off = OFFSET(ts_scale) },
+        "set the input ts scale", "scale" },
+    { "timestamp",      HAS_ARG | OPT_PERFILE | OPT_OUTPUT,          { .func_arg = opt_recording_timestamp },
+        "set the recording timestamp ('now' to set the current time)", "time" },
+    { "metadata",       HAS_ARG | OPT_STRING | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(metadata) },
+        "add metadata", "string=string" },
+    { "program",        HAS_ARG | OPT_STRING | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(program) },
+        "add program with specified streams", "title=string:st=number..." },
+    { "dframes",        HAS_ARG | OPT_PERFILE | OPT_EXPERT |
+                        OPT_OUTPUT,                                  { .func_arg = opt_data_frames },
+        "set the number of data frames to output", "number" },
+    { "benchmark",      OPT_BOOL | OPT_EXPERT,                       { &do_benchmark },
+        "add timings for benchmarking" },
+    { "benchmark_all",  OPT_BOOL | OPT_EXPERT,                       { &do_benchmark_all },
+      "add timings for each task" },
+    { "progress",       HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_progress },
+      "write program-readable progress information", "url" },
+    { "stdin",          OPT_BOOL | OPT_EXPERT,                       { &stdin_interaction },
+      "enable or disable interaction on standard input" },
+    { "timelimit",      HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_timelimit },
+        "set max runtime in seconds", "limit" },
+    { "dump",           OPT_BOOL | OPT_EXPERT,                       { &do_pkt_dump },
+        "dump each input packet" },
+    { "hex",            OPT_BOOL | OPT_EXPERT,                       { &do_hex_dump },
+        "when dumping packets, also dump the payload" },
+    { "re",             OPT_BOOL | OPT_EXPERT | OPT_OFFSET |
+                        OPT_INPUT,                                   { .off = OFFSET(rate_emu) },
+        "read input at native frame rate", "" },
+    { "target",         HAS_ARG | OPT_PERFILE | OPT_OUTPUT,          { .func_arg = opt_target },
+        "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\" or \"dv50\" "
+        "with optional prefixes \"pal-\", \"ntsc-\" or \"film-\")", "type" },
+    { "vsync",          HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_vsync },
+        "video sync method", "" },
+    { "frame_drop_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT,      { &frame_drop_threshold },
+        "frame drop threshold", "" },
+    { "async",          HAS_ARG | OPT_INT | OPT_EXPERT,              { &audio_sync_method },
+        "audio sync method", "" },
+    { "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT,          { &audio_drift_threshold },
+        "audio drift threshold", "threshold" },
+    { "copyts",         OPT_BOOL | OPT_EXPERT,                       { &copy_ts },
+        "copy timestamps" },
+    { "start_at_zero",  OPT_BOOL | OPT_EXPERT,                       { &start_at_zero },
+        "shift input timestamps to start at 0 when using copyts" },
+    { "copytb",         HAS_ARG | OPT_INT | OPT_EXPERT,              { &copy_tb },
+        "copy input stream time base when stream copying", "mode" },
+    { "shortest",       OPT_BOOL | OPT_EXPERT | OPT_OFFSET |
+                        OPT_OUTPUT,                                  { .off = OFFSET(shortest) },
+        "finish encoding within shortest input" },
+    { "apad",           OPT_STRING | HAS_ARG | OPT_SPEC |
+                        OPT_OUTPUT,                                  { .off = OFFSET(apad) },
+        "audio pad", "" },
+    { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT,       { &dts_delta_threshold },
+        "timestamp discontinuity delta threshold", "threshold" },
+    { "dts_error_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT,       { &dts_error_threshold },
+        "timestamp error delta threshold", "threshold" },
+    { "xerror",         OPT_BOOL | OPT_EXPERT,                       { &exit_on_error },
+        "exit on error", "error" },
+    { "abort_on",       HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_abort_on },
+        "abort on the specified condition flags", "flags" },
+    { "copyinkf",       OPT_BOOL | OPT_EXPERT | OPT_SPEC |
+                        OPT_OUTPUT,                                  { .off = OFFSET(copy_initial_nonkeyframes) },
+        "copy initial non-keyframes" },
+    { "copypriorss",    OPT_INT | HAS_ARG | OPT_EXPERT | OPT_SPEC | OPT_OUTPUT,   { .off = OFFSET(copy_prior_start) },
+        "copy or discard frames before start time" },
+    { "frames",         OPT_INT64 | HAS_ARG | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(max_frames) },
+        "set the number of frames to output", "number" },
+    { "tag",            OPT_STRING | HAS_ARG | OPT_SPEC |
+                        OPT_EXPERT | OPT_OUTPUT | OPT_INPUT,         { .off = OFFSET(codec_tags) },
+        "force codec tag/fourcc", "fourcc/tag" },
+    { "q",              HAS_ARG | OPT_EXPERT | OPT_DOUBLE |
+                        OPT_SPEC | OPT_OUTPUT,                       { .off = OFFSET(qscale) },
+        "use fixed quality scale (VBR)", "q" },
+    { "qscale",         HAS_ARG | OPT_EXPERT | OPT_PERFILE |
+                        OPT_OUTPUT,                                  { .func_arg = opt_qscale },
+        "use fixed quality scale (VBR)", "q" },
+    { "profile",        HAS_ARG | OPT_EXPERT | OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_profile },
+        "set profile", "profile" },
+    { "filter",         HAS_ARG | OPT_STRING | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(filters) },
+        "set stream filtergraph", "filter_graph" },
+    { "filter_threads",  HAS_ARG | OPT_INT,                          { &filter_nbthreads },
+        "number of non-complex filter threads" },
+    { "filter_script",  HAS_ARG | OPT_STRING | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(filter_scripts) },
+        "read stream filtergraph description from a file", "filename" },
+    { "reinit_filter",  HAS_ARG | OPT_INT | OPT_SPEC | OPT_INPUT,    { .off = OFFSET(reinit_filters) },
+        "reinit filtergraph on input parameter changes", "" },
+    { "filter_complex", HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_filter_complex },
+        "create a complex filtergraph", "graph_description" },
+    { "filter_complex_threads", HAS_ARG | OPT_INT,                   { &filter_complex_nbthreads },
+        "number of threads for -filter_complex" },
+    { "lavfi",          HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_filter_complex },
+        "create a complex filtergraph", "graph_description" },
+    { "filter_complex_script", HAS_ARG | OPT_EXPERT,                 { .func_arg = opt_filter_complex_script },
+        "read complex filtergraph description from a file", "filename" },
+    { "stats",          OPT_BOOL,                                    { &print_stats },
+        "print progress report during encoding", },
+    { "attach",         HAS_ARG | OPT_PERFILE | OPT_EXPERT |
+                        OPT_OUTPUT,                                  { .func_arg = opt_attach },
+        "add an attachment to the output file", "filename" },
+    { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC |
+                         OPT_EXPERT | OPT_INPUT,                     { .off = OFFSET(dump_attachment) },
+        "extract an attachment into a file", "filename" },
+    { "stream_loop", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_INPUT |
+                        OPT_OFFSET,                                  { .off = OFFSET(loop) }, "set number of times input stream shall be looped", "loop count" },
+    { "debug_ts",       OPT_BOOL | OPT_EXPERT,                       { &debug_ts },
+        "print timestamp debugging info" },
+    { "max_error_rate",  HAS_ARG | OPT_FLOAT,                        { &max_error_rate },
+        "maximum error rate", "ratio of errors (0.0: no errors, 1.0: 100% errors) above which ffmpeg returns an error instead of success." },
+    { "discard",        OPT_STRING | HAS_ARG | OPT_SPEC |
+                        OPT_INPUT,                                   { .off = OFFSET(discard) },
+        "discard", "" },
+    { "disposition",    OPT_STRING | HAS_ARG | OPT_SPEC |
+                        OPT_OUTPUT,                                  { .off = OFFSET(disposition) },
+        "disposition", "" },
+    { "thread_queue_size", HAS_ARG | OPT_INT | OPT_OFFSET | OPT_EXPERT | OPT_INPUT,
+                                                                     { .off = OFFSET(thread_queue_size) },
+        "set the maximum number of queued packets from the demuxer" },
+    { "find_stream_info", OPT_BOOL | OPT_PERFILE | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
+        "read and decode the streams to fill missing information with heuristics" },
+
+    /* video options */
+    { "vframes",      OPT_VIDEO | HAS_ARG  | OPT_PERFILE | OPT_OUTPUT,           { .func_arg = opt_video_frames },
+        "set the number of video frames to output", "number" },
+    { "r",            OPT_VIDEO | HAS_ARG  | OPT_STRING | OPT_SPEC |
+                      OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(frame_rates) },
+        "set frame rate (Hz value, fraction or abbreviation)", "rate" },
+    { "s",            OPT_VIDEO | HAS_ARG | OPT_SUBTITLE | OPT_STRING | OPT_SPEC |
+                      OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(frame_sizes) },
+        "set frame size (WxH or abbreviation)", "size" },
+    { "aspect",       OPT_VIDEO | HAS_ARG  | OPT_STRING | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(frame_aspect_ratios) },
+        "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
+    { "pix_fmt",      OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC |
+                      OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(frame_pix_fmts) },
+        "set pixel format", "format" },
+    { "bits_per_raw_sample", OPT_VIDEO | OPT_INT | HAS_ARG,                      { &frame_bits_per_raw_sample },
+        "set the number of bits per raw sample", "number" },
+    { "intra",        OPT_VIDEO | OPT_BOOL | OPT_EXPERT,                         { &intra_only },
+        "deprecated use -g 1" },
+    { "vn",           OPT_VIDEO | OPT_BOOL  | OPT_OFFSET | OPT_INPUT | OPT_OUTPUT,{ .off = OFFSET(video_disable) },
+        "disable video" },
+    { "rc_override",  OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(rc_overrides) },
+        "rate control override for specific intervals", "override" },
+    { "vcodec",       OPT_VIDEO | HAS_ARG  | OPT_PERFILE | OPT_INPUT |
+                      OPT_OUTPUT,                                                { .func_arg = opt_video_codec },
+        "force video codec ('copy' to copy stream)", "codec" },
+    { "sameq",        OPT_VIDEO | OPT_EXPERT ,                                   { .func_arg = opt_sameq },
+        "Removed" },
+    { "same_quant",   OPT_VIDEO | OPT_EXPERT ,                                   { .func_arg = opt_sameq },
+        "Removed" },
+    { "timecode",     OPT_VIDEO | HAS_ARG | OPT_PERFILE | OPT_OUTPUT,            { .func_arg = opt_timecode },
+        "set initial TimeCode value.", "hh:mm:ss[:;.]ff" },
+    { "pass",         OPT_VIDEO | HAS_ARG | OPT_SPEC | OPT_INT | OPT_OUTPUT,     { .off = OFFSET(pass) },
+        "select the pass number (1 to 3)", "n" },
+    { "passlogfile",  OPT_VIDEO | HAS_ARG | OPT_STRING | OPT_EXPERT | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(passlogfiles) },
+        "select two pass log file name prefix", "prefix" },
+    { "deinterlace",  OPT_VIDEO | OPT_BOOL | OPT_EXPERT,                         { &do_deinterlace },
+        "this option is deprecated, use the yadif filter instead" },
+    { "psnr",         OPT_VIDEO | OPT_BOOL | OPT_EXPERT,                         { &do_psnr },
+        "calculate PSNR of compressed frames" },
+    { "vstats",       OPT_VIDEO | OPT_EXPERT ,                                   { .func_arg = opt_vstats },
+        "dump video coding statistics to file" },
+    { "vstats_file",  OPT_VIDEO | HAS_ARG | OPT_EXPERT ,                         { .func_arg = opt_vstats_file },
+        "dump video coding statistics to file", "file" },
+    { "vstats_version",  OPT_VIDEO | OPT_INT | HAS_ARG | OPT_EXPERT ,            { &vstats_version },
+        "Version of the vstats format to use."},
+    { "vf",           OPT_VIDEO | HAS_ARG  | OPT_PERFILE | OPT_OUTPUT,           { .func_arg = opt_video_filters },
+        "set video filters", "filter_graph" },
+    { "intra_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(intra_matrices) },
+        "specify intra matrix coeffs", "matrix" },
+    { "inter_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(inter_matrices) },
+        "specify inter matrix coeffs", "matrix" },
+    { "chroma_intra_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(chroma_intra_matrices) },
+        "specify intra matrix coeffs", "matrix" },
+    { "top",          OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_INT| OPT_SPEC |
+                      OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(top_field_first) },
+        "top=1/bottom=0/auto=-1 field first", "" },
+    { "vtag",         OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_PERFILE |
+                      OPT_INPUT | OPT_OUTPUT,                                    { .func_arg = opt_old2new },
+        "force video tag/fourcc", "fourcc/tag" },
+    { "qphist",       OPT_VIDEO | OPT_BOOL | OPT_EXPERT ,                        { &qp_hist },
+        "show QP histogram" },
+    { "force_fps",    OPT_VIDEO | OPT_BOOL | OPT_EXPERT  | OPT_SPEC |
+                      OPT_OUTPUT,                                                { .off = OFFSET(force_fps) },
+        "force the selected framerate, disable the best supported framerate selection" },
+    { "streamid",     OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_PERFILE |
+                      OPT_OUTPUT,                                                { .func_arg = opt_streamid },
+        "set the value of an outfile streamid", "streamIndex:value" },
+    { "force_key_frames", OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT |
+                          OPT_SPEC | OPT_OUTPUT,                                 { .off = OFFSET(forced_key_frames) },
+        "force key frames at specified timestamps", "timestamps" },
+    { "ab",           OPT_VIDEO | HAS_ARG | OPT_PERFILE | OPT_OUTPUT,            { .func_arg = opt_bitrate },
+        "audio bitrate (please use -b:a)", "bitrate" },
+    { "b",            OPT_VIDEO | HAS_ARG | OPT_PERFILE | OPT_OUTPUT,            { .func_arg = opt_bitrate },
+        "video bitrate (please use -b:v)", "bitrate" },
+    { "hwaccel",          OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT |
+                          OPT_SPEC | OPT_INPUT,                                  { .off = OFFSET(hwaccels) },
+        "use HW accelerated decoding", "hwaccel name" },
+    { "hwaccel_device",   OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT |
+                          OPT_SPEC | OPT_INPUT,                                  { .off = OFFSET(hwaccel_devices) },
+        "select a device for HW acceleration", "devicename" },
+    { "hwaccel_output_format", OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT |
+                          OPT_SPEC | OPT_INPUT,                                  { .off = OFFSET(hwaccel_output_formats) },
+        "select output format used with HW accelerated decoding", "format" },
+#if CONFIG_VDA || CONFIG_VIDEOTOOLBOX
+    { "videotoolbox_pixfmt", HAS_ARG | OPT_STRING | OPT_EXPERT, { &videotoolbox_pixfmt}, "" },
+#endif
+    { "hwaccels",         OPT_EXIT,                                              { .func_arg = show_hwaccels },
+        "show available HW acceleration methods" },
+    { "autorotate",       HAS_ARG | OPT_BOOL | OPT_SPEC |
+                          OPT_EXPERT | OPT_INPUT,                                { .off = OFFSET(autorotate) },
+        "automatically insert correct rotate filters" },
+    { "hwaccel_lax_profile_check", OPT_BOOL | OPT_EXPERT,                        { &hwaccel_lax_profile_check},
+        "attempt to decode anyway if HW accelerated decoder's supported profiles do not exactly match the stream" },
+
+    /* audio options */
+    { "aframes",        OPT_AUDIO | HAS_ARG  | OPT_PERFILE | OPT_OUTPUT,           { .func_arg = opt_audio_frames },
+        "set the number of audio frames to output", "number" },
+    { "aq",             OPT_AUDIO | HAS_ARG  | OPT_PERFILE | OPT_OUTPUT,           { .func_arg = opt_audio_qscale },
+        "set audio quality (codec-specific)", "quality", },
+    { "ar",             OPT_AUDIO | HAS_ARG  | OPT_INT | OPT_SPEC |
+                        OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(audio_sample_rate) },
+        "set audio sampling rate (in Hz)", "rate" },
+    { "ac",             OPT_AUDIO | HAS_ARG  | OPT_INT | OPT_SPEC |
+                        OPT_INPUT | OPT_OUTPUT,                                    { .off = OFFSET(audio_channels) },
+        "set number of audio channels", "channels" },
+    { "an",             OPT_AUDIO | OPT_BOOL | OPT_OFFSET | OPT_INPUT | OPT_OUTPUT,{ .off = OFFSET(audio_disable) },
+        "disable audio" },
+    { "acodec",         OPT_AUDIO | HAS_ARG  | OPT_PERFILE |
+                        OPT_INPUT | OPT_OUTPUT,                                    { .func_arg = opt_audio_codec },
+        "force audio codec ('copy' to copy stream)", "codec" },
+    { "atag",           OPT_AUDIO | HAS_ARG  | OPT_EXPERT | OPT_PERFILE |
+                        OPT_OUTPUT,                                                { .func_arg = opt_old2new },
+        "force audio tag/fourcc", "fourcc/tag" },
+    { "vol",            OPT_AUDIO | HAS_ARG  | OPT_INT,                            { &audio_volume },
+        "change audio volume (256=normal)" , "volume" },
+    { "sample_fmt",     OPT_AUDIO | HAS_ARG  | OPT_EXPERT | OPT_SPEC |
+                        OPT_STRING | OPT_INPUT | OPT_OUTPUT,                       { .off = OFFSET(sample_fmts) },
+        "set sample format", "format" },
+    { "channel_layout", OPT_AUDIO | HAS_ARG  | OPT_EXPERT | OPT_PERFILE |
+                        OPT_INPUT | OPT_OUTPUT,                                    { .func_arg = opt_channel_layout },
+        "set channel layout", "layout" },
+    { "af",             OPT_AUDIO | HAS_ARG  | OPT_PERFILE | OPT_OUTPUT,           { .func_arg = opt_audio_filters },
+        "set audio filters", "filter_graph" },
+    { "guess_layout_max", OPT_AUDIO | HAS_ARG | OPT_INT | OPT_SPEC | OPT_EXPERT | OPT_INPUT, { .off = OFFSET(guess_layout_max) },
+      "set the maximum number of channels to try to guess the channel layout" },
+
+    /* subtitle options */
+    { "sn",     OPT_SUBTITLE | OPT_BOOL | OPT_OFFSET | OPT_INPUT | OPT_OUTPUT, { .off = OFFSET(subtitle_disable) },
+        "disable subtitle" },
+    { "scodec", OPT_SUBTITLE | HAS_ARG  | OPT_PERFILE | OPT_INPUT | OPT_OUTPUT, { .func_arg = opt_subtitle_codec },
+        "force subtitle codec ('copy' to copy stream)", "codec" },
+    { "stag",   OPT_SUBTITLE | HAS_ARG  | OPT_EXPERT  | OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_old2new }
+        , "force subtitle tag/fourcc", "fourcc/tag" },
+    { "fix_sub_duration", OPT_BOOL | OPT_EXPERT | OPT_SUBTITLE | OPT_SPEC | OPT_INPUT, { .off = OFFSET(fix_sub_duration) },
+        "fix subtitles duration" },
+    { "canvas_size", OPT_SUBTITLE | HAS_ARG | OPT_STRING | OPT_SPEC | OPT_INPUT, { .off = OFFSET(canvas_sizes) },
+        "set canvas size (WxH or abbreviation)", "size" },
+
+    /* grab options */
+    { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_video_channel },
+        "deprecated, use -channel", "channel" },
+    { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_video_standard },
+        "deprecated, use -standard", "standard" },
+    { "isync", OPT_BOOL | OPT_EXPERT, { &input_sync }, "this option is deprecated and does nothing", "" },
+
+    /* muxer options */
+    { "muxdelay",   OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET | OPT_OUTPUT, { .off = OFFSET(mux_max_delay) },
+        "set the maximum demux-decode delay", "seconds" },
+    { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET | OPT_OUTPUT, { .off = OFFSET(mux_preload) },
+        "set the initial demux-decode delay", "seconds" },
+    { "override_ffserver", OPT_BOOL | OPT_EXPERT | OPT_OUTPUT, { &override_ffserver },
+        "override the options from ffserver", "" },
+    { "sdp_file", HAS_ARG | OPT_EXPERT | OPT_OUTPUT, { .func_arg = opt_sdp_file },
+        "specify a file in which to print sdp information", "file" },
+
+    { "time_base", HAS_ARG | OPT_STRING | OPT_EXPERT | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(time_bases) },
+        "set the desired time base hint for output stream (1:24, 1:48000 or 0.04166, 2.0833e-5)", "ratio" },
+    { "enc_time_base", HAS_ARG | OPT_STRING | OPT_EXPERT | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(enc_time_bases) },
+        "set the desired time base for the encoder (1:24, 1:48000 or 0.04166, 2.0833e-5). "
+        "two special values are defined - "
+        "0 = use frame rate (video) or sample rate (audio),"
+        "-1 = match source time base", "ratio" },
+
+    { "bsf", HAS_ARG | OPT_STRING | OPT_SPEC | OPT_EXPERT | OPT_OUTPUT, { .off = OFFSET(bitstream_filters) },
+        "A comma-separated list of bitstream filters", "bitstream_filters" },
+    { "absf", HAS_ARG | OPT_AUDIO | OPT_EXPERT| OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_old2new },
+        "deprecated", "audio bitstream_filters" },
+    { "vbsf", OPT_VIDEO | HAS_ARG | OPT_EXPERT| OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_old2new },
+        "deprecated", "video bitstream_filters" },
+
+    { "apre", HAS_ARG | OPT_AUDIO | OPT_EXPERT| OPT_PERFILE | OPT_OUTPUT,    { .func_arg = opt_preset },
+        "set the audio options to the indicated preset", "preset" },
+    { "vpre", OPT_VIDEO | HAS_ARG | OPT_EXPERT| OPT_PERFILE | OPT_OUTPUT,    { .func_arg = opt_preset },
+        "set the video options to the indicated preset", "preset" },
+    { "spre", HAS_ARG | OPT_SUBTITLE | OPT_EXPERT| OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_preset },
+        "set the subtitle options to the indicated preset", "preset" },
+    { "fpre", HAS_ARG | OPT_EXPERT| OPT_PERFILE | OPT_OUTPUT,                { .func_arg = opt_preset },
+        "set options from indicated preset file", "filename" },
+
+    { "max_muxing_queue_size", HAS_ARG | OPT_INT | OPT_SPEC | OPT_EXPERT | OPT_OUTPUT, { .off = OFFSET(max_muxing_queue_size) },
+        "maximum number of packets that can be buffered while waiting for all streams to initialize", "packets" },
+
+    /* data codec support */
+    { "dcodec", HAS_ARG | OPT_DATA | OPT_PERFILE | OPT_EXPERT | OPT_INPUT | OPT_OUTPUT, { .func_arg = opt_data_codec },
+        "force data codec ('copy' to copy stream)", "codec" },
+    { "dn", OPT_BOOL | OPT_VIDEO | OPT_OFFSET | OPT_INPUT | OPT_OUTPUT, { .off = OFFSET(data_disable) },
+        "disable data" },
+
+#if CONFIG_VAAPI
+    { "vaapi_device", HAS_ARG | OPT_EXPERT, { .func_arg = opt_vaapi_device },
+        "set VAAPI hardware device (DRM path or X11 display name)", "device" },
+#endif
+
+#if CONFIG_QSV
+    { "qsv_device", HAS_ARG | OPT_STRING | OPT_EXPERT, { &qsv_device },
+        "set QSV hardware device (DirectX adapter index, DRM path or X11 display name)", "device"},
+#endif
+
+    { "init_hw_device", HAS_ARG | OPT_EXPERT, { .func_arg = opt_init_hw_device },
+        "initialise hardware device", "args" },
+    { "filter_hw_device", HAS_ARG | OPT_EXPERT, { .func_arg = opt_filter_hw_device },
+        "set hardware device used when filtering", "device" },
+
+    { NULL, },
+};
diff --git a/fftools/ffmpeg_qsv.c b/fftools/ffmpeg_qsv.c
new file mode 100644
index 0000000000..7442750029
--- /dev/null
+++ b/fftools/ffmpeg_qsv.c
@@ -0,0 +1,109 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <mfx/mfxvideo.h>
+#include <stdlib.h>
+
+#include "libavutil/dict.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_qsv.h"
+#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+#include "libavcodec/qsv.h"
+
+#include "ffmpeg.h"
+
+char *qsv_device = NULL;
+
+static int qsv_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
+{
+    InputStream *ist = s->opaque;
+
+    return av_hwframe_get_buffer(ist->hw_frames_ctx, frame, 0);
+}
+
+static void qsv_uninit(AVCodecContext *s)
+{
+    InputStream *ist = s->opaque;
+    av_buffer_unref(&ist->hw_frames_ctx);
+}
+
+static int qsv_device_init(InputStream *ist)
+{
+    int err;
+    AVDictionary *dict = NULL;
+
+    if (qsv_device) {
+        err = av_dict_set(&dict, "child_device", qsv_device, 0);
+        if (err < 0)
+            return err;
+    }
+
+    err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV,
+                                 ist->hwaccel_device, dict, 0);
+    if (err < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Error creating a QSV device\n");
+        goto err_out;
+    }
+
+err_out:
+    if (dict)
+        av_dict_free(&dict);
+
+    return err;
+}
+
+int qsv_init(AVCodecContext *s)
+{
+    InputStream *ist = s->opaque;
+    AVHWFramesContext *frames_ctx;
+    AVQSVFramesContext *frames_hwctx;
+    int ret;
+
+    if (!hw_device_ctx) {
+        ret = qsv_device_init(ist);
+        if (ret < 0)
+            return ret;
+    }
+
+    av_buffer_unref(&ist->hw_frames_ctx);
+    ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
+    if (!ist->hw_frames_ctx)
+        return AVERROR(ENOMEM);
+
+    frames_ctx   = (AVHWFramesContext*)ist->hw_frames_ctx->data;
+    frames_hwctx = frames_ctx->hwctx;
+
+    frames_ctx->width             = FFALIGN(s->coded_width,  32);
+    frames_ctx->height            = FFALIGN(s->coded_height, 32);
+    frames_ctx->format            = AV_PIX_FMT_QSV;
+    frames_ctx->sw_format         = s->sw_pix_fmt;
+    frames_ctx->initial_pool_size = 64;
+    frames_hwctx->frame_type      = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
+
+    ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n");
+        return ret;
+    }
+
+    ist->hwaccel_get_buffer = qsv_get_buffer;
+    ist->hwaccel_uninit     = qsv_uninit;
+
+    return 0;
+}
diff --git a/fftools/ffmpeg_videotoolbox.c b/fftools/ffmpeg_videotoolbox.c
new file mode 100644
index 0000000000..e9039654b9
--- /dev/null
+++ b/fftools/ffmpeg_videotoolbox.c
@@ -0,0 +1,201 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#if HAVE_UTGETOSTYPEFROMSTRING
+#include <CoreServices/CoreServices.h>
+#endif
+
+#include "libavcodec/avcodec.h"
+#if CONFIG_VDA
+#  include "libavcodec/vda.h"
+#endif
+#if CONFIG_VIDEOTOOLBOX
+#  include "libavcodec/videotoolbox.h"
+#endif
+#include "libavutil/imgutils.h"
+#include "ffmpeg.h"
+
+typedef struct VTContext {
+    AVFrame *tmp_frame;
+} VTContext;
+
+char *videotoolbox_pixfmt;
+
+static int videotoolbox_retrieve_data(AVCodecContext *s, AVFrame *frame)
+{
+    InputStream *ist = s->opaque;
+    VTContext  *vt = ist->hwaccel_ctx;
+    CVPixelBufferRef pixbuf = (CVPixelBufferRef)frame->data[3];
+    OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf);
+    CVReturn err;
+    uint8_t *data[4] = { 0 };
+    int linesize[4] = { 0 };
+    int planes, ret, i;
+
+    av_frame_unref(vt->tmp_frame);
+
+    switch (pixel_format) {
+    case kCVPixelFormatType_420YpCbCr8Planar: vt->tmp_frame->format = AV_PIX_FMT_YUV420P; break;
+    case kCVPixelFormatType_422YpCbCr8:       vt->tmp_frame->format = AV_PIX_FMT_UYVY422; break;
+    case kCVPixelFormatType_32BGRA:           vt->tmp_frame->format = AV_PIX_FMT_BGRA; break;
+#ifdef kCFCoreFoundationVersionNumber10_7
+    case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange: vt->tmp_frame->format = AV_PIX_FMT_NV12; break;
+#endif
+    default:
+        av_log(NULL, AV_LOG_ERROR,
+               "%s: Unsupported pixel format: %s\n",
+               av_fourcc2str(s->codec_tag), videotoolbox_pixfmt);
+        return AVERROR(ENOSYS);
+    }
+
+    vt->tmp_frame->width  = frame->width;
+    vt->tmp_frame->height = frame->height;
+    ret = av_frame_get_buffer(vt->tmp_frame, 32);
+    if (ret < 0)
+        return ret;
+
+    err = CVPixelBufferLockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
+    if (err != kCVReturnSuccess) {
+        av_log(NULL, AV_LOG_ERROR, "Error locking the pixel buffer.\n");
+        return AVERROR_UNKNOWN;
+    }
+
+    if (CVPixelBufferIsPlanar(pixbuf)) {
+
+        planes = CVPixelBufferGetPlaneCount(pixbuf);
+        for (i = 0; i < planes; i++) {
+            data[i]     = CVPixelBufferGetBaseAddressOfPlane(pixbuf, i);
+            linesize[i] = CVPixelBufferGetBytesPerRowOfPlane(pixbuf, i);
+        }
+    } else {
+        data[0] = CVPixelBufferGetBaseAddress(pixbuf);
+        linesize[0] = CVPixelBufferGetBytesPerRow(pixbuf);
+    }
+
+    av_image_copy(vt->tmp_frame->data, vt->tmp_frame->linesize,
+                  (const uint8_t **)data, linesize, vt->tmp_frame->format,
+                  frame->width, frame->height);
+
+    ret = av_frame_copy_props(vt->tmp_frame, frame);
+    CVPixelBufferUnlockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
+    if (ret < 0)
+        return ret;
+
+    av_frame_unref(frame);
+    av_frame_move_ref(frame, vt->tmp_frame);
+
+    return 0;
+}
+
+static void videotoolbox_uninit(AVCodecContext *s)
+{
+    InputStream *ist = s->opaque;
+    VTContext  *vt = ist->hwaccel_ctx;
+
+    ist->hwaccel_uninit        = NULL;
+    ist->hwaccel_retrieve_data = NULL;
+
+    av_frame_free(&vt->tmp_frame);
+
+    if (ist->hwaccel_id == HWACCEL_VIDEOTOOLBOX) {
+#if CONFIG_VIDEOTOOLBOX
+        av_videotoolbox_default_free(s);
+#endif
+    } else {
+#if CONFIG_VDA
+        av_vda_default_free(s);
+#endif
+    }
+    av_freep(&ist->hwaccel_ctx);
+}
+
+int videotoolbox_init(AVCodecContext *s)
+{
+    InputStream *ist = s->opaque;
+    int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
+    int ret = 0;
+    VTContext *vt;
+
+    vt = av_mallocz(sizeof(*vt));
+    if (!vt)
+        return AVERROR(ENOMEM);
+
+    ist->hwaccel_ctx           = vt;
+    ist->hwaccel_uninit        = videotoolbox_uninit;
+    ist->hwaccel_retrieve_data = videotoolbox_retrieve_data;
+
+    vt->tmp_frame = av_frame_alloc();
+    if (!vt->tmp_frame) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    if (ist->hwaccel_id == HWACCEL_VIDEOTOOLBOX) {
+#if CONFIG_VIDEOTOOLBOX
+        if (!videotoolbox_pixfmt) {
+            ret = av_videotoolbox_default_init(s);
+        } else {
+            AVVideotoolboxContext *vtctx = av_videotoolbox_alloc_context();
+            CFStringRef pixfmt_str = CFStringCreateWithCString(kCFAllocatorDefault,
+                                                               videotoolbox_pixfmt,
+                                                               kCFStringEncodingUTF8);
+#if HAVE_UTGETOSTYPEFROMSTRING
+            vtctx->cv_pix_fmt_type = UTGetOSTypeFromString(pixfmt_str);
+#else
+            av_log(s, loglevel, "UTGetOSTypeFromString() is not available "
+                   "on this platform, %s pixel format can not be honored from "
+                   "the command line\n", videotoolbox_pixfmt);
+#endif
+            ret = av_videotoolbox_default_init2(s, vtctx);
+            CFRelease(pixfmt_str);
+        }
+#endif
+    } else {
+#if CONFIG_VDA
+        if (!videotoolbox_pixfmt) {
+            ret = av_vda_default_init(s);
+        } else {
+            AVVDAContext *vdactx = av_vda_alloc_context();
+            CFStringRef pixfmt_str = CFStringCreateWithCString(kCFAllocatorDefault,
+                                                               videotoolbox_pixfmt,
+                                                               kCFStringEncodingUTF8);
+#if HAVE_UTGETOSTYPEFROMSTRING
+            vdactx->cv_pix_fmt_type = UTGetOSTypeFromString(pixfmt_str);
+#else
+            av_log(s, loglevel, "UTGetOSTypeFromString() is not available "
+                   "on this platform, %s pixel format can not be honored from "
+                   "the command line\n", videotoolbox_pixfmt);
+#endif
+            ret = av_vda_default_init2(s, vdactx);
+            CFRelease(pixfmt_str);
+        }
+#endif
+    }
+    if (ret < 0) {
+        av_log(NULL, loglevel,
+               "Error creating %s decoder.\n", ist->hwaccel_id == HWACCEL_VIDEOTOOLBOX ? "Videotoolbox" : "VDA");
+        goto fail;
+    }
+
+    return 0;
+fail:
+    videotoolbox_uninit(s);
+    return ret;
+}
diff --git a/fftools/ffplay.c b/fftools/ffplay.c
new file mode 100644
index 0000000000..9f7774613c
--- /dev/null
+++ b/fftools/ffplay.c
@@ -0,0 +1,3765 @@
+/*
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple media player based on the FFmpeg libraries
+ */
+
+#include "config.h"
+#include <inttypes.h>
+#include <math.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdint.h>
+
+#include "libavutil/avstring.h"
+#include "libavutil/eval.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/dict.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/samplefmt.h"
+#include "libavutil/avassert.h"
+#include "libavutil/time.h"
+#include "libavformat/avformat.h"
+#include "libavdevice/avdevice.h"
+#include "libswscale/swscale.h"
+#include "libavutil/opt.h"
+#include "libavcodec/avfft.h"
+#include "libswresample/swresample.h"
+
+#if CONFIG_AVFILTER
+# include "libavfilter/avfilter.h"
+# include "libavfilter/buffersink.h"
+# include "libavfilter/buffersrc.h"
+#endif
+
+#include <SDL.h>
+#include <SDL_thread.h>
+
+#include "cmdutils.h"
+
+#include <assert.h>
+
+const char program_name[] = "ffplay";
+const int program_birth_year = 2003;
+
+#define MAX_QUEUE_SIZE (15 * 1024 * 1024)
+#define MIN_FRAMES 25
+#define EXTERNAL_CLOCK_MIN_FRAMES 2
+#define EXTERNAL_CLOCK_MAX_FRAMES 10
+
+/* Minimum SDL audio buffer size, in samples. */
+#define SDL_AUDIO_MIN_BUFFER_SIZE 512
+/* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
+#define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
+
+/* Step size for volume control in dB */
+#define SDL_VOLUME_STEP (0.75)
+
+/* no AV sync correction is done if below the minimum AV sync threshold */
+#define AV_SYNC_THRESHOLD_MIN 0.04
+/* AV sync correction is done if above the maximum AV sync threshold */
+#define AV_SYNC_THRESHOLD_MAX 0.1
+/* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
+#define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
+/* no AV correction is done if too big error */
+#define AV_NOSYNC_THRESHOLD 10.0
+
+/* maximum audio speed change to get correct sync */
+#define SAMPLE_CORRECTION_PERCENT_MAX 10
+
+/* external clock speed adjustment constants for realtime sources based on buffer fullness */
+#define EXTERNAL_CLOCK_SPEED_MIN  0.900
+#define EXTERNAL_CLOCK_SPEED_MAX  1.010
+#define EXTERNAL_CLOCK_SPEED_STEP 0.001
+
+/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
+#define AUDIO_DIFF_AVG_NB   20
+
+/* polls for possible required screen refresh at least this often, should be less than 1/fps */
+#define REFRESH_RATE 0.01
+
+/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
+/* TODO: We assume that a decoded and resampled frame fits into this buffer */
+#define SAMPLE_ARRAY_SIZE (8 * 65536)
+
+#define CURSOR_HIDE_DELAY 1000000
+
+#define USE_ONEPASS_SUBTITLE_RENDER 1
+
+static unsigned sws_flags = SWS_BICUBIC;
+
+typedef struct MyAVPacketList {
+    AVPacket pkt;
+    struct MyAVPacketList *next;
+    int serial;
+} MyAVPacketList;
+
+typedef struct PacketQueue {
+    MyAVPacketList *first_pkt, *last_pkt;
+    int nb_packets;
+    int size;
+    int64_t duration;
+    int abort_request;
+    int serial;
+    SDL_mutex *mutex;
+    SDL_cond *cond;
+} PacketQueue;
+
+#define VIDEO_PICTURE_QUEUE_SIZE 3
+#define SUBPICTURE_QUEUE_SIZE 16
+#define SAMPLE_QUEUE_SIZE 9
+#define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
+
+typedef struct AudioParams {
+    int freq;
+    int channels;
+    int64_t channel_layout;
+    enum AVSampleFormat fmt;
+    int frame_size;
+    int bytes_per_sec;
+} AudioParams;
+
+typedef struct Clock {
+    double pts;           /* clock base */
+    double pts_drift;     /* clock base minus time at which we updated the clock */
+    double last_updated;
+    double speed;
+    int serial;           /* clock is based on a packet with this serial */
+    int paused;
+    int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
+} Clock;
+
+/* Common struct for handling all types of decoded data and allocated render buffers. */
+typedef struct Frame {
+    AVFrame *frame;
+    AVSubtitle sub;
+    int serial;
+    double pts;           /* presentation timestamp for the frame */
+    double duration;      /* estimated duration of the frame */
+    int64_t pos;          /* byte position of the frame in the input file */
+    int width;
+    int height;
+    int format;
+    AVRational sar;
+    int uploaded;
+    int flip_v;
+} Frame;
+
+typedef struct FrameQueue {
+    Frame queue[FRAME_QUEUE_SIZE];
+    int rindex;
+    int windex;
+    int size;
+    int max_size;
+    int keep_last;
+    int rindex_shown;
+    SDL_mutex *mutex;
+    SDL_cond *cond;
+    PacketQueue *pktq;
+} FrameQueue;
+
+enum {
+    AV_SYNC_AUDIO_MASTER, /* default choice */
+    AV_SYNC_VIDEO_MASTER,
+    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
+};
+
+typedef struct Decoder {
+    AVPacket pkt;
+    PacketQueue *queue;
+    AVCodecContext *avctx;
+    int pkt_serial;
+    int finished;
+    int packet_pending;
+    SDL_cond *empty_queue_cond;
+    int64_t start_pts;
+    AVRational start_pts_tb;
+    int64_t next_pts;
+    AVRational next_pts_tb;
+    SDL_Thread *decoder_tid;
+} Decoder;
+
+typedef struct VideoState {
+    SDL_Thread *read_tid;
+    AVInputFormat *iformat;
+    int abort_request;
+    int force_refresh;
+    int paused;
+    int last_paused;
+    int queue_attachments_req;
+    int seek_req;
+    int seek_flags;
+    int64_t seek_pos;
+    int64_t seek_rel;
+    int read_pause_return;
+    AVFormatContext *ic;
+    int realtime;
+
+    Clock audclk;
+    Clock vidclk;
+    Clock extclk;
+
+    FrameQueue pictq;
+    FrameQueue subpq;
+    FrameQueue sampq;
+
+    Decoder auddec;
+    Decoder viddec;
+    Decoder subdec;
+
+    int audio_stream;
+
+    int av_sync_type;
+
+    double audio_clock;
+    int audio_clock_serial;
+    double audio_diff_cum; /* used for AV difference average computation */
+    double audio_diff_avg_coef;
+    double audio_diff_threshold;
+    int audio_diff_avg_count;
+    AVStream *audio_st;
+    PacketQueue audioq;
+    int audio_hw_buf_size;
+    uint8_t *audio_buf;
+    uint8_t *audio_buf1;
+    unsigned int audio_buf_size; /* in bytes */
+    unsigned int audio_buf1_size;
+    int audio_buf_index; /* in bytes */
+    int audio_write_buf_size;
+    int audio_volume;
+    int muted;
+    struct AudioParams audio_src;
+#if CONFIG_AVFILTER
+    struct AudioParams audio_filter_src;
+#endif
+    struct AudioParams audio_tgt;
+    struct SwrContext *swr_ctx;
+    int frame_drops_early;
+    int frame_drops_late;
+
+    enum ShowMode {
+        SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
+    } show_mode;
+    int16_t sample_array[SAMPLE_ARRAY_SIZE];
+    int sample_array_index;
+    int last_i_start;
+    RDFTContext *rdft;
+    int rdft_bits;
+    FFTSample *rdft_data;
+    int xpos;
+    double last_vis_time;
+    SDL_Texture *vis_texture;
+    SDL_Texture *sub_texture;
+    SDL_Texture *vid_texture;
+
+    int subtitle_stream;
+    AVStream *subtitle_st;
+    PacketQueue subtitleq;
+
+    double frame_timer;
+    double frame_last_returned_time;
+    double frame_last_filter_delay;
+    int video_stream;
+    AVStream *video_st;
+    PacketQueue videoq;
+    double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
+    struct SwsContext *img_convert_ctx;
+    struct SwsContext *sub_convert_ctx;
+    int eof;
+
+    char *filename;
+    int width, height, xleft, ytop;
+    int step;
+
+#if CONFIG_AVFILTER
+    int vfilter_idx;
+    AVFilterContext *in_video_filter;   // the first filter in the video chain
+    AVFilterContext *out_video_filter;  // the last filter in the video chain
+    AVFilterContext *in_audio_filter;   // the first filter in the audio chain
+    AVFilterContext *out_audio_filter;  // the last filter in the audio chain
+    AVFilterGraph *agraph;              // audio filter graph
+#endif
+
+    int last_video_stream, last_audio_stream, last_subtitle_stream;
+
+    SDL_cond *continue_read_thread;
+} VideoState;
+
+/* options specified by the user */
+static AVInputFormat *file_iformat;
+static const char *input_filename;
+static const char *window_title;
+static int default_width  = 640;
+static int default_height = 480;
+static int screen_width  = 0;
+static int screen_height = 0;
+static int audio_disable;
+static int video_disable;
+static int subtitle_disable;
+static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
+static int seek_by_bytes = -1;
+static int display_disable;
+static int borderless;
+static int startup_volume = 100;
+static int show_status = 1;
+static int av_sync_type = AV_SYNC_AUDIO_MASTER;
+static int64_t start_time = AV_NOPTS_VALUE;
+static int64_t duration = AV_NOPTS_VALUE;
+static int fast = 0;
+static int genpts = 0;
+static int lowres = 0;
+static int decoder_reorder_pts = -1;
+static int autoexit;
+static int exit_on_keydown;
+static int exit_on_mousedown;
+static int loop = 1;
+static int framedrop = -1;
+static int infinite_buffer = -1;
+static enum ShowMode show_mode = SHOW_MODE_NONE;
+static const char *audio_codec_name;
+static const char *subtitle_codec_name;
+static const char *video_codec_name;
+double rdftspeed = 0.02;
+static int64_t cursor_last_shown;
+static int cursor_hidden = 0;
+#if CONFIG_AVFILTER
+static const char **vfilters_list = NULL;
+static int nb_vfilters = 0;
+static char *afilters = NULL;
+#endif
+static int autorotate = 1;
+static int find_stream_info = 1;
+
+/* current context */
+static int is_full_screen;
+static int64_t audio_callback_time;
+
+static AVPacket flush_pkt;
+
+#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
+
+static SDL_Window *window;
+static SDL_Renderer *renderer;
+
+static const struct TextureFormatEntry {
+    enum AVPixelFormat format;
+    int texture_fmt;
+} sdl_texture_format_map[] = {
+    { AV_PIX_FMT_RGB8,           SDL_PIXELFORMAT_RGB332 },
+    { AV_PIX_FMT_RGB444,         SDL_PIXELFORMAT_RGB444 },
+    { AV_PIX_FMT_RGB555,         SDL_PIXELFORMAT_RGB555 },
+    { AV_PIX_FMT_BGR555,         SDL_PIXELFORMAT_BGR555 },
+    { AV_PIX_FMT_RGB565,         SDL_PIXELFORMAT_RGB565 },
+    { AV_PIX_FMT_BGR565,         SDL_PIXELFORMAT_BGR565 },
+    { AV_PIX_FMT_RGB24,          SDL_PIXELFORMAT_RGB24 },
+    { AV_PIX_FMT_BGR24,          SDL_PIXELFORMAT_BGR24 },
+    { AV_PIX_FMT_0RGB32,         SDL_PIXELFORMAT_RGB888 },
+    { AV_PIX_FMT_0BGR32,         SDL_PIXELFORMAT_BGR888 },
+    { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
+    { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
+    { AV_PIX_FMT_RGB32,          SDL_PIXELFORMAT_ARGB8888 },
+    { AV_PIX_FMT_RGB32_1,        SDL_PIXELFORMAT_RGBA8888 },
+    { AV_PIX_FMT_BGR32,          SDL_PIXELFORMAT_ABGR8888 },
+    { AV_PIX_FMT_BGR32_1,        SDL_PIXELFORMAT_BGRA8888 },
+    { AV_PIX_FMT_YUV420P,        SDL_PIXELFORMAT_IYUV },
+    { AV_PIX_FMT_YUYV422,        SDL_PIXELFORMAT_YUY2 },
+    { AV_PIX_FMT_UYVY422,        SDL_PIXELFORMAT_UYVY },
+    { AV_PIX_FMT_NONE,           SDL_PIXELFORMAT_UNKNOWN },
+};
+
+#if CONFIG_AVFILTER
+static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
+{
+    GROW_ARRAY(vfilters_list, nb_vfilters);
+    vfilters_list[nb_vfilters - 1] = arg;
+    return 0;
+}
+#endif
+
+static inline
+int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
+                   enum AVSampleFormat fmt2, int64_t channel_count2)
+{
+    /* If channel count == 1, planar and non-planar formats are the same */
+    if (channel_count1 == 1 && channel_count2 == 1)
+        return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
+    else
+        return channel_count1 != channel_count2 || fmt1 != fmt2;
+}
+
+static inline
+int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
+{
+    if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
+        return channel_layout;
+    else
+        return 0;
+}
+
+static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
+{
+    MyAVPacketList *pkt1;
+
+    if (q->abort_request)
+       return -1;
+
+    pkt1 = av_malloc(sizeof(MyAVPacketList));
+    if (!pkt1)
+        return -1;
+    pkt1->pkt = *pkt;
+    pkt1->next = NULL;
+    if (pkt == &flush_pkt)
+        q->serial++;
+    pkt1->serial = q->serial;
+
+    if (!q->last_pkt)
+        q->first_pkt = pkt1;
+    else
+        q->last_pkt->next = pkt1;
+    q->last_pkt = pkt1;
+    q->nb_packets++;
+    q->size += pkt1->pkt.size + sizeof(*pkt1);
+    q->duration += pkt1->pkt.duration;
+    /* XXX: should duplicate packet data in DV case */
+    SDL_CondSignal(q->cond);
+    return 0;
+}
+
+static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
+{
+    int ret;
+
+    SDL_LockMutex(q->mutex);
+    ret = packet_queue_put_private(q, pkt);
+    SDL_UnlockMutex(q->mutex);
+
+    if (pkt != &flush_pkt && ret < 0)
+        av_packet_unref(pkt);
+
+    return ret;
+}
+
+static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
+{
+    AVPacket pkt1, *pkt = &pkt1;
+    av_init_packet(pkt);
+    pkt->data = NULL;
+    pkt->size = 0;
+    pkt->stream_index = stream_index;
+    return packet_queue_put(q, pkt);
+}
+
+/* packet queue handling */
+static int packet_queue_init(PacketQueue *q)
+{
+    memset(q, 0, sizeof(PacketQueue));
+    q->mutex = SDL_CreateMutex();
+    if (!q->mutex) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
+        return AVERROR(ENOMEM);
+    }
+    q->cond = SDL_CreateCond();
+    if (!q->cond) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
+        return AVERROR(ENOMEM);
+    }
+    q->abort_request = 1;
+    return 0;
+}
+
+static void packet_queue_flush(PacketQueue *q)
+{
+    MyAVPacketList *pkt, *pkt1;
+
+    SDL_LockMutex(q->mutex);
+    for (pkt = q->first_pkt; pkt; pkt = pkt1) {
+        pkt1 = pkt->next;
+        av_packet_unref(&pkt->pkt);
+        av_freep(&pkt);
+    }
+    q->last_pkt = NULL;
+    q->first_pkt = NULL;
+    q->nb_packets = 0;
+    q->size = 0;
+    q->duration = 0;
+    SDL_UnlockMutex(q->mutex);
+}
+
+static void packet_queue_destroy(PacketQueue *q)
+{
+    packet_queue_flush(q);
+    SDL_DestroyMutex(q->mutex);
+    SDL_DestroyCond(q->cond);
+}
+
+static void packet_queue_abort(PacketQueue *q)
+{
+    SDL_LockMutex(q->mutex);
+
+    q->abort_request = 1;
+
+    SDL_CondSignal(q->cond);
+
+    SDL_UnlockMutex(q->mutex);
+}
+
+static void packet_queue_start(PacketQueue *q)
+{
+    SDL_LockMutex(q->mutex);
+    q->abort_request = 0;
+    packet_queue_put_private(q, &flush_pkt);
+    SDL_UnlockMutex(q->mutex);
+}
+
+/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
+static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
+{
+    MyAVPacketList *pkt1;
+    int ret;
+
+    SDL_LockMutex(q->mutex);
+
+    for (;;) {
+        if (q->abort_request) {
+            ret = -1;
+            break;
+        }
+
+        pkt1 = q->first_pkt;
+        if (pkt1) {
+            q->first_pkt = pkt1->next;
+            if (!q->first_pkt)
+                q->last_pkt = NULL;
+            q->nb_packets--;
+            q->size -= pkt1->pkt.size + sizeof(*pkt1);
+            q->duration -= pkt1->pkt.duration;
+            *pkt = pkt1->pkt;
+            if (serial)
+                *serial = pkt1->serial;
+            av_free(pkt1);
+            ret = 1;
+            break;
+        } else if (!block) {
+            ret = 0;
+            break;
+        } else {
+            SDL_CondWait(q->cond, q->mutex);
+        }
+    }
+    SDL_UnlockMutex(q->mutex);
+    return ret;
+}
+
+static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
+    memset(d, 0, sizeof(Decoder));
+    d->avctx = avctx;
+    d->queue = queue;
+    d->empty_queue_cond = empty_queue_cond;
+    d->start_pts = AV_NOPTS_VALUE;
+    d->pkt_serial = -1;
+}
+
+static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
+    int ret = AVERROR(EAGAIN);
+
+    for (;;) {
+        AVPacket pkt;
+
+        if (d->queue->serial == d->pkt_serial) {
+            do {
+                if (d->queue->abort_request)
+                    return -1;
+
+                switch (d->avctx->codec_type) {
+                    case AVMEDIA_TYPE_VIDEO:
+                        ret = avcodec_receive_frame(d->avctx, frame);
+                        if (ret >= 0) {
+                            if (decoder_reorder_pts == -1) {
+                                frame->pts = frame->best_effort_timestamp;
+                            } else if (!decoder_reorder_pts) {
+                                frame->pts = frame->pkt_dts;
+                            }
+                        }
+                        break;
+                    case AVMEDIA_TYPE_AUDIO:
+                        ret = avcodec_receive_frame(d->avctx, frame);
+                        if (ret >= 0) {
+                            AVRational tb = (AVRational){1, frame->sample_rate};
+                            if (frame->pts != AV_NOPTS_VALUE)
+                                frame->pts = av_rescale_q(frame->pts, av_codec_get_pkt_timebase(d->avctx), tb);
+                            else if (d->next_pts != AV_NOPTS_VALUE)
+                                frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
+                            if (frame->pts != AV_NOPTS_VALUE) {
+                                d->next_pts = frame->pts + frame->nb_samples;
+                                d->next_pts_tb = tb;
+                            }
+                        }
+                        break;
+                }
+                if (ret == AVERROR_EOF) {
+                    d->finished = d->pkt_serial;
+                    avcodec_flush_buffers(d->avctx);
+                    return 0;
+                }
+                if (ret >= 0)
+                    return 1;
+            } while (ret != AVERROR(EAGAIN));
+        }
+
+        do {
+            if (d->queue->nb_packets == 0)
+                SDL_CondSignal(d->empty_queue_cond);
+            if (d->packet_pending) {
+                av_packet_move_ref(&pkt, &d->pkt);
+                d->packet_pending = 0;
+            } else {
+                if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
+                    return -1;
+            }
+        } while (d->queue->serial != d->pkt_serial);
+
+        if (pkt.data == flush_pkt.data) {
+            avcodec_flush_buffers(d->avctx);
+            d->finished = 0;
+            d->next_pts = d->start_pts;
+            d->next_pts_tb = d->start_pts_tb;
+        } else {
+            if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
+                int got_frame = 0;
+                ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
+                if (ret < 0) {
+                    ret = AVERROR(EAGAIN);
+                } else {
+                    if (got_frame && !pkt.data) {
+                       d->packet_pending = 1;
+                       av_packet_move_ref(&d->pkt, &pkt);
+                    }
+                    ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
+                }
+            } else {
+                if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
+                    av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
+                    d->packet_pending = 1;
+                    av_packet_move_ref(&d->pkt, &pkt);
+                }
+            }
+            av_packet_unref(&pkt);
+        }
+    }
+}
+
+static void decoder_destroy(Decoder *d) {
+    av_packet_unref(&d->pkt);
+    avcodec_free_context(&d->avctx);
+}
+
+static void frame_queue_unref_item(Frame *vp)
+{
+    av_frame_unref(vp->frame);
+    avsubtitle_free(&vp->sub);
+}
+
+static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
+{
+    int i;
+    memset(f, 0, sizeof(FrameQueue));
+    if (!(f->mutex = SDL_CreateMutex())) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
+        return AVERROR(ENOMEM);
+    }
+    if (!(f->cond = SDL_CreateCond())) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
+        return AVERROR(ENOMEM);
+    }
+    f->pktq = pktq;
+    f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
+    f->keep_last = !!keep_last;
+    for (i = 0; i < f->max_size; i++)
+        if (!(f->queue[i].frame = av_frame_alloc()))
+            return AVERROR(ENOMEM);
+    return 0;
+}
+
+static void frame_queue_destory(FrameQueue *f)
+{
+    int i;
+    for (i = 0; i < f->max_size; i++) {
+        Frame *vp = &f->queue[i];
+        frame_queue_unref_item(vp);
+        av_frame_free(&vp->frame);
+    }
+    SDL_DestroyMutex(f->mutex);
+    SDL_DestroyCond(f->cond);
+}
+
+static void frame_queue_signal(FrameQueue *f)
+{
+    SDL_LockMutex(f->mutex);
+    SDL_CondSignal(f->cond);
+    SDL_UnlockMutex(f->mutex);
+}
+
+static Frame *frame_queue_peek(FrameQueue *f)
+{
+    return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
+}
+
+static Frame *frame_queue_peek_next(FrameQueue *f)
+{
+    return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
+}
+
+static Frame *frame_queue_peek_last(FrameQueue *f)
+{
+    return &f->queue[f->rindex];
+}
+
+static Frame *frame_queue_peek_writable(FrameQueue *f)
+{
+    /* wait until we have space to put a new frame */
+    SDL_LockMutex(f->mutex);
+    while (f->size >= f->max_size &&
+           !f->pktq->abort_request) {
+        SDL_CondWait(f->cond, f->mutex);
+    }
+    SDL_UnlockMutex(f->mutex);
+
+    if (f->pktq->abort_request)
+        return NULL;
+
+    return &f->queue[f->windex];
+}
+
+static Frame *frame_queue_peek_readable(FrameQueue *f)
+{
+    /* wait until we have a readable a new frame */
+    SDL_LockMutex(f->mutex);
+    while (f->size - f->rindex_shown <= 0 &&
+           !f->pktq->abort_request) {
+        SDL_CondWait(f->cond, f->mutex);
+    }
+    SDL_UnlockMutex(f->mutex);
+
+    if (f->pktq->abort_request)
+        return NULL;
+
+    return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
+}
+
+static void frame_queue_push(FrameQueue *f)
+{
+    if (++f->windex == f->max_size)
+        f->windex = 0;
+    SDL_LockMutex(f->mutex);
+    f->size++;
+    SDL_CondSignal(f->cond);
+    SDL_UnlockMutex(f->mutex);
+}
+
+static void frame_queue_next(FrameQueue *f)
+{
+    if (f->keep_last && !f->rindex_shown) {
+        f->rindex_shown = 1;
+        return;
+    }
+    frame_queue_unref_item(&f->queue[f->rindex]);
+    if (++f->rindex == f->max_size)
+        f->rindex = 0;
+    SDL_LockMutex(f->mutex);
+    f->size--;
+    SDL_CondSignal(f->cond);
+    SDL_UnlockMutex(f->mutex);
+}
+
+/* return the number of undisplayed frames in the queue */
+static int frame_queue_nb_remaining(FrameQueue *f)
+{
+    return f->size - f->rindex_shown;
+}
+
+/* return last shown position */
+static int64_t frame_queue_last_pos(FrameQueue *f)
+{
+    Frame *fp = &f->queue[f->rindex];
+    if (f->rindex_shown && fp->serial == f->pktq->serial)
+        return fp->pos;
+    else
+        return -1;
+}
+
+static void decoder_abort(Decoder *d, FrameQueue *fq)
+{
+    packet_queue_abort(d->queue);
+    frame_queue_signal(fq);
+    SDL_WaitThread(d->decoder_tid, NULL);
+    d->decoder_tid = NULL;
+    packet_queue_flush(d->queue);
+}
+
+static inline void fill_rectangle(int x, int y, int w, int h)
+{
+    SDL_Rect rect;
+    rect.x = x;
+    rect.y = y;
+    rect.w = w;
+    rect.h = h;
+    if (w && h)
+        SDL_RenderFillRect(renderer, &rect);
+}
+
+static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
+{
+    Uint32 format;
+    int access, w, h;
+    if (SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
+        void *pixels;
+        int pitch;
+        SDL_DestroyTexture(*texture);
+        if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
+            return -1;
+        if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
+            return -1;
+        if (init_texture) {
+            if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
+                return -1;
+            memset(pixels, 0, pitch * new_height);
+            SDL_UnlockTexture(*texture);
+        }
+        av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
+    }
+    return 0;
+}
+
+static void calculate_display_rect(SDL_Rect *rect,
+                                   int scr_xleft, int scr_ytop, int scr_width, int scr_height,
+                                   int pic_width, int pic_height, AVRational pic_sar)
+{
+    float aspect_ratio;
+    int width, height, x, y;
+
+    if (pic_sar.num == 0)
+        aspect_ratio = 0;
+    else
+        aspect_ratio = av_q2d(pic_sar);
+
+    if (aspect_ratio <= 0.0)
+        aspect_ratio = 1.0;
+    aspect_ratio *= (float)pic_width / (float)pic_height;
+
+    /* XXX: we suppose the screen has a 1.0 pixel ratio */
+    height = scr_height;
+    width = lrint(height * aspect_ratio) & ~1;
+    if (width > scr_width) {
+        width = scr_width;
+        height = lrint(width / aspect_ratio) & ~1;
+    }
+    x = (scr_width - width) / 2;
+    y = (scr_height - height) / 2;
+    rect->x = scr_xleft + x;
+    rect->y = scr_ytop  + y;
+    rect->w = FFMAX(width,  1);
+    rect->h = FFMAX(height, 1);
+}
+
+static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
+{
+    int i;
+    *sdl_blendmode = SDL_BLENDMODE_NONE;
+    *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
+    if (format == AV_PIX_FMT_RGB32   ||
+        format == AV_PIX_FMT_RGB32_1 ||
+        format == AV_PIX_FMT_BGR32   ||
+        format == AV_PIX_FMT_BGR32_1)
+        *sdl_blendmode = SDL_BLENDMODE_BLEND;
+    for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
+        if (format == sdl_texture_format_map[i].format) {
+            *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
+            return;
+        }
+    }
+}
+
+static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
+    int ret = 0;
+    Uint32 sdl_pix_fmt;
+    SDL_BlendMode sdl_blendmode;
+    get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
+    if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
+        return -1;
+    switch (sdl_pix_fmt) {
+        case SDL_PIXELFORMAT_UNKNOWN:
+            /* This should only happen if we are not using avfilter... */
+            *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
+                frame->width, frame->height, frame->format, frame->width, frame->height,
+                AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
+            if (*img_convert_ctx != NULL) {
+                uint8_t *pixels[4];
+                int pitch[4];
+                if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
+                    sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
+                              0, frame->height, pixels, pitch);
+                    SDL_UnlockTexture(*tex);
+                }
+            } else {
+                av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
+                ret = -1;
+            }
+            break;
+        case SDL_PIXELFORMAT_IYUV:
+            if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
+                ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
+                                                       frame->data[1], frame->linesize[1],
+                                                       frame->data[2], frame->linesize[2]);
+            } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
+                ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height                    - 1), -frame->linesize[0],
+                                                       frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
+                                                       frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
+            } else {
+                av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
+                return -1;
+            }
+            break;
+        default:
+            if (frame->linesize[0] < 0) {
+                ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
+            } else {
+                ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
+            }
+            break;
+    }
+    return ret;
+}
+
+static void video_image_display(VideoState *is)
+{
+    Frame *vp;
+    Frame *sp = NULL;
+    SDL_Rect rect;
+
+    vp = frame_queue_peek_last(&is->pictq);
+    if (is->subtitle_st) {
+        if (frame_queue_nb_remaining(&is->subpq) > 0) {
+            sp = frame_queue_peek(&is->subpq);
+
+            if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
+                if (!sp->uploaded) {
+                    uint8_t* pixels[4];
+                    int pitch[4];
+                    int i;
+                    if (!sp->width || !sp->height) {
+                        sp->width = vp->width;
+                        sp->height = vp->height;
+                    }
+                    if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
+                        return;
+
+                    for (i = 0; i < sp->sub.num_rects; i++) {
+                        AVSubtitleRect *sub_rect = sp->sub.rects[i];
+
+                        sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
+                        sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
+                        sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
+                        sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
+
+                        is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
+                            sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
+                            sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
+                            0, NULL, NULL, NULL);
+                        if (!is->sub_convert_ctx) {
+                            av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
+                            return;
+                        }
+                        if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
+                            sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
+                                      0, sub_rect->h, pixels, pitch);
+                            SDL_UnlockTexture(is->sub_texture);
+                        }
+                    }
+                    sp->uploaded = 1;
+                }
+            } else
+                sp = NULL;
+        }
+    }
+
+    calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
+
+    if (!vp->uploaded) {
+        if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
+            return;
+        vp->uploaded = 1;
+        vp->flip_v = vp->frame->linesize[0] < 0;
+    }
+
+    SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
+    if (sp) {
+#if USE_ONEPASS_SUBTITLE_RENDER
+        SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
+#else
+        int i;
+        double xratio = (double)rect.w / (double)sp->width;
+        double yratio = (double)rect.h / (double)sp->height;
+        for (i = 0; i < sp->sub.num_rects; i++) {
+            SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
+            SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
+                               .y = rect.y + sub_rect->y * yratio,
+                               .w = sub_rect->w * xratio,
+                               .h = sub_rect->h * yratio};
+            SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
+        }
+#endif
+    }
+}
+
+static inline int compute_mod(int a, int b)
+{
+    return a < 0 ? a%b + b : a%b;
+}
+
+static void video_audio_display(VideoState *s)
+{
+    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
+    int ch, channels, h, h2;
+    int64_t time_diff;
+    int rdft_bits, nb_freq;
+
+    for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
+        ;
+    nb_freq = 1 << (rdft_bits - 1);
+
+    /* compute display index : center on currently output samples */
+    channels = s->audio_tgt.channels;
+    nb_display_channels = channels;
+    if (!s->paused) {
+        int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
+        n = 2 * channels;
+        delay = s->audio_write_buf_size;
+        delay /= n;
+
+        /* to be more precise, we take into account the time spent since
+           the last buffer computation */
+        if (audio_callback_time) {
+            time_diff = av_gettime_relative() - audio_callback_time;
+            delay -= (time_diff * s->audio_tgt.freq) / 1000000;
+        }
+
+        delay += 2 * data_used;
+        if (delay < data_used)
+            delay = data_used;
+
+        i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
+        if (s->show_mode == SHOW_MODE_WAVES) {
+            h = INT_MIN;
+            for (i = 0; i < 1000; i += channels) {
+                int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
+                int a = s->sample_array[idx];
+                int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
+                int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
+                int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
+                int score = a - d;
+                if (h < score && (b ^ c) < 0) {
+                    h = score;
+                    i_start = idx;
+                }
+            }
+        }
+
+        s->last_i_start = i_start;
+    } else {
+        i_start = s->last_i_start;
+    }
+
+    if (s->show_mode == SHOW_MODE_WAVES) {
+        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
+
+        /* total height for one channel */
+        h = s->height / nb_display_channels;
+        /* graph height / 2 */
+        h2 = (h * 9) / 20;
+        for (ch = 0; ch < nb_display_channels; ch++) {
+            i = i_start + ch;
+            y1 = s->ytop + ch * h + (h / 2); /* position of center line */
+            for (x = 0; x < s->width; x++) {
+                y = (s->sample_array[i] * h2) >> 15;
+                if (y < 0) {
+                    y = -y;
+                    ys = y1 - y;
+                } else {
+                    ys = y1;
+                }
+                fill_rectangle(s->xleft + x, ys, 1, y);
+                i += channels;
+                if (i >= SAMPLE_ARRAY_SIZE)
+                    i -= SAMPLE_ARRAY_SIZE;
+            }
+        }
+
+        SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
+
+        for (ch = 1; ch < nb_display_channels; ch++) {
+            y = s->ytop + ch * h;
+            fill_rectangle(s->xleft, y, s->width, 1);
+        }
+    } else {
+        if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
+            return;
+
+        nb_display_channels= FFMIN(nb_display_channels, 2);
+        if (rdft_bits != s->rdft_bits) {
+            av_rdft_end(s->rdft);
+            av_free(s->rdft_data);
+            s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
+            s->rdft_bits = rdft_bits;
+            s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
+        }
+        if (!s->rdft || !s->rdft_data){
+            av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
+            s->show_mode = SHOW_MODE_WAVES;
+        } else {
+            FFTSample *data[2];
+            SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
+            uint32_t *pixels;
+            int pitch;
+            for (ch = 0; ch < nb_display_channels; ch++) {
+                data[ch] = s->rdft_data + 2 * nb_freq * ch;
+                i = i_start + ch;
+                for (x = 0; x < 2 * nb_freq; x++) {
+                    double w = (x-nb_freq) * (1.0 / nb_freq);
+                    data[ch][x] = s->sample_array[i] * (1.0 - w * w);
+                    i += channels;
+                    if (i >= SAMPLE_ARRAY_SIZE)
+                        i -= SAMPLE_ARRAY_SIZE;
+                }
+                av_rdft_calc(s->rdft, data[ch]);
+            }
+            /* Least efficient way to do this, we should of course
+             * directly access it but it is more than fast enough. */
+            if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
+                pitch >>= 2;
+                pixels += pitch * s->height;
+                for (y = 0; y < s->height; y++) {
+                    double w = 1 / sqrt(nb_freq);
+                    int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
+                    int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
+                                                        : a;
+                    a = FFMIN(a, 255);
+                    b = FFMIN(b, 255);
+                    pixels -= pitch;
+                    *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
+                }
+                SDL_UnlockTexture(s->vis_texture);
+            }
+            SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
+        }
+        if (!s->paused)
+            s->xpos++;
+        if (s->xpos >= s->width)
+            s->xpos= s->xleft;
+    }
+}
+
+static void stream_component_close(VideoState *is, int stream_index)
+{
+    AVFormatContext *ic = is->ic;
+    AVCodecParameters *codecpar;
+
+    if (stream_index < 0 || stream_index >= ic->nb_streams)
+        return;
+    codecpar = ic->streams[stream_index]->codecpar;
+
+    switch (codecpar->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        decoder_abort(&is->auddec, &is->sampq);
+        SDL_CloseAudio();
+        decoder_destroy(&is->auddec);
+        swr_free(&is->swr_ctx);
+        av_freep(&is->audio_buf1);
+        is->audio_buf1_size = 0;
+        is->audio_buf = NULL;
+
+        if (is->rdft) {
+            av_rdft_end(is->rdft);
+            av_freep(&is->rdft_data);
+            is->rdft = NULL;
+            is->rdft_bits = 0;
+        }
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        decoder_abort(&is->viddec, &is->pictq);
+        decoder_destroy(&is->viddec);
+        break;
+    case AVMEDIA_TYPE_SUBTITLE:
+        decoder_abort(&is->subdec, &is->subpq);
+        decoder_destroy(&is->subdec);
+        break;
+    default:
+        break;
+    }
+
+    ic->streams[stream_index]->discard = AVDISCARD_ALL;
+    switch (codecpar->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        is->audio_st = NULL;
+        is->audio_stream = -1;
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        is->video_st = NULL;
+        is->video_stream = -1;
+        break;
+    case AVMEDIA_TYPE_SUBTITLE:
+        is->subtitle_st = NULL;
+        is->subtitle_stream = -1;
+        break;
+    default:
+        break;
+    }
+}
+
+static void stream_close(VideoState *is)
+{
+    /* XXX: use a special url_shutdown call to abort parse cleanly */
+    is->abort_request = 1;
+    SDL_WaitThread(is->read_tid, NULL);
+
+    /* close each stream */
+    if (is->audio_stream >= 0)
+        stream_component_close(is, is->audio_stream);
+    if (is->video_stream >= 0)
+        stream_component_close(is, is->video_stream);
+    if (is->subtitle_stream >= 0)
+        stream_component_close(is, is->subtitle_stream);
+
+    avformat_close_input(&is->ic);
+
+    packet_queue_destroy(&is->videoq);
+    packet_queue_destroy(&is->audioq);
+    packet_queue_destroy(&is->subtitleq);
+
+    /* free all pictures */
+    frame_queue_destory(&is->pictq);
+    frame_queue_destory(&is->sampq);
+    frame_queue_destory(&is->subpq);
+    SDL_DestroyCond(is->continue_read_thread);
+    sws_freeContext(is->img_convert_ctx);
+    sws_freeContext(is->sub_convert_ctx);
+    av_free(is->filename);
+    if (is->vis_texture)
+        SDL_DestroyTexture(is->vis_texture);
+    if (is->vid_texture)
+        SDL_DestroyTexture(is->vid_texture);
+    if (is->sub_texture)
+        SDL_DestroyTexture(is->sub_texture);
+    av_free(is);
+}
+
+static void do_exit(VideoState *is)
+{
+    if (is) {
+        stream_close(is);
+    }
+    if (renderer)
+        SDL_DestroyRenderer(renderer);
+    if (window)
+        SDL_DestroyWindow(window);
+    av_lockmgr_register(NULL);
+    uninit_opts();
+#if CONFIG_AVFILTER
+    av_freep(&vfilters_list);
+#endif
+    avformat_network_deinit();
+    if (show_status)
+        printf("\n");
+    SDL_Quit();
+    av_log(NULL, AV_LOG_QUIET, "%s", "");
+    exit(0);
+}
+
+static void sigterm_handler(int sig)
+{
+    exit(123);
+}
+
+static void set_default_window_size(int width, int height, AVRational sar)
+{
+    SDL_Rect rect;
+    calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
+    default_width  = rect.w;
+    default_height = rect.h;
+}
+
+static int video_open(VideoState *is)
+{
+    int w,h;
+
+    if (screen_width) {
+        w = screen_width;
+        h = screen_height;
+    } else {
+        w = default_width;
+        h = default_height;
+    }
+
+    if (!window) {
+        int flags = SDL_WINDOW_SHOWN;
+        if (!window_title)
+            window_title = input_filename;
+        if (is_full_screen)
+            flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
+        if (borderless)
+            flags |= SDL_WINDOW_BORDERLESS;
+        else
+            flags |= SDL_WINDOW_RESIZABLE;
+        window = SDL_CreateWindow(window_title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, flags);
+        SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
+        if (window) {
+            SDL_RendererInfo info;
+            renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+            if (!renderer) {
+                av_log(NULL, AV_LOG_WARNING, "Failed to initialize a hardware accelerated renderer: %s\n", SDL_GetError());
+                renderer = SDL_CreateRenderer(window, -1, 0);
+            }
+            if (renderer) {
+                if (!SDL_GetRendererInfo(renderer, &info))
+                    av_log(NULL, AV_LOG_VERBOSE, "Initialized %s renderer.\n", info.name);
+            }
+        }
+    } else {
+        SDL_SetWindowSize(window, w, h);
+    }
+
+    if (!window || !renderer) {
+        av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
+        do_exit(is);
+    }
+
+    is->width  = w;
+    is->height = h;
+
+    return 0;
+}
+
+/* display the current picture, if any */
+static void video_display(VideoState *is)
+{
+    if (!window)
+        video_open(is);
+
+    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+    SDL_RenderClear(renderer);
+    if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
+        video_audio_display(is);
+    else if (is->video_st)
+        video_image_display(is);
+    SDL_RenderPresent(renderer);
+}
+
+static double get_clock(Clock *c)
+{
+    if (*c->queue_serial != c->serial)
+        return NAN;
+    if (c->paused) {
+        return c->pts;
+    } else {
+        double time = av_gettime_relative() / 1000000.0;
+        return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
+    }
+}
+
+static void set_clock_at(Clock *c, double pts, int serial, double time)
+{
+    c->pts = pts;
+    c->last_updated = time;
+    c->pts_drift = c->pts - time;
+    c->serial = serial;
+}
+
+static void set_clock(Clock *c, double pts, int serial)
+{
+    double time = av_gettime_relative() / 1000000.0;
+    set_clock_at(c, pts, serial, time);
+}
+
+static void set_clock_speed(Clock *c, double speed)
+{
+    set_clock(c, get_clock(c), c->serial);
+    c->speed = speed;
+}
+
+static void init_clock(Clock *c, int *queue_serial)
+{
+    c->speed = 1.0;
+    c->paused = 0;
+    c->queue_serial = queue_serial;
+    set_clock(c, NAN, -1);
+}
+
+static void sync_clock_to_slave(Clock *c, Clock *slave)
+{
+    double clock = get_clock(c);
+    double slave_clock = get_clock(slave);
+    if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
+        set_clock(c, slave_clock, slave->serial);
+}
+
+static int get_master_sync_type(VideoState *is) {
+    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
+        if (is->video_st)
+            return AV_SYNC_VIDEO_MASTER;
+        else
+            return AV_SYNC_AUDIO_MASTER;
+    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
+        if (is->audio_st)
+            return AV_SYNC_AUDIO_MASTER;
+        else
+            return AV_SYNC_EXTERNAL_CLOCK;
+    } else {
+        return AV_SYNC_EXTERNAL_CLOCK;
+    }
+}
+
+/* get the current master clock value */
+static double get_master_clock(VideoState *is)
+{
+    double val;
+
+    switch (get_master_sync_type(is)) {
+        case AV_SYNC_VIDEO_MASTER:
+            val = get_clock(&is->vidclk);
+            break;
+        case AV_SYNC_AUDIO_MASTER:
+            val = get_clock(&is->audclk);
+            break;
+        default:
+            val = get_clock(&is->extclk);
+            break;
+    }
+    return val;
+}
+
+static void check_external_clock_speed(VideoState *is) {
+   if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
+       is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
+       set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
+   } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
+              (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
+       set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
+   } else {
+       double speed = is->extclk.speed;
+       if (speed != 1.0)
+           set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
+   }
+}
+
+/* seek in the stream */
+static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
+{
+    if (!is->seek_req) {
+        is->seek_pos = pos;
+        is->seek_rel = rel;
+        is->seek_flags &= ~AVSEEK_FLAG_BYTE;
+        if (seek_by_bytes)
+            is->seek_flags |= AVSEEK_FLAG_BYTE;
+        is->seek_req = 1;
+        SDL_CondSignal(is->continue_read_thread);
+    }
+}
+
+/* pause or resume the video */
+static void stream_toggle_pause(VideoState *is)
+{
+    if (is->paused) {
+        is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
+        if (is->read_pause_return != AVERROR(ENOSYS)) {
+            is->vidclk.paused = 0;
+        }
+        set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
+    }
+    set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
+    is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
+}
+
+static void toggle_pause(VideoState *is)
+{
+    stream_toggle_pause(is);
+    is->step = 0;
+}
+
+static void toggle_mute(VideoState *is)
+{
+    is->muted = !is->muted;
+}
+
+static void update_volume(VideoState *is, int sign, double step)
+{
+    double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
+    int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
+    is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
+}
+
+static void step_to_next_frame(VideoState *is)
+{
+    /* if the stream is paused unpause it, then step */
+    if (is->paused)
+        stream_toggle_pause(is);
+    is->step = 1;
+}
+
+static double compute_target_delay(double delay, VideoState *is)
+{
+    double sync_threshold, diff = 0;
+
+    /* update delay to follow master synchronisation source */
+    if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
+        /* if video is slave, we try to correct big delays by
+           duplicating or deleting a frame */
+        diff = get_clock(&is->vidclk) - get_master_clock(is);
+
+        /* skip or repeat frame. We take into account the
+           delay to compute the threshold. I still don't know
+           if it is the best guess */
+        sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
+        if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
+            if (diff <= -sync_threshold)
+                delay = FFMAX(0, delay + diff);
+            else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
+                delay = delay + diff;
+            else if (diff >= sync_threshold)
+                delay = 2 * delay;
+        }
+    }
+
+    av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
+            delay, -diff);
+
+    return delay;
+}
+
+static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
+    if (vp->serial == nextvp->serial) {
+        double duration = nextvp->pts - vp->pts;
+        if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
+            return vp->duration;
+        else
+            return duration;
+    } else {
+        return 0.0;
+    }
+}
+
+static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
+    /* update current video pts */
+    set_clock(&is->vidclk, pts, serial);
+    sync_clock_to_slave(&is->extclk, &is->vidclk);
+}
+
+/* called to display each frame */
+static void video_refresh(void *opaque, double *remaining_time)
+{
+    VideoState *is = opaque;
+    double time;
+
+    Frame *sp, *sp2;
+
+    if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
+        check_external_clock_speed(is);
+
+    if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
+        time = av_gettime_relative() / 1000000.0;
+        if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
+            video_display(is);
+            is->last_vis_time = time;
+        }
+        *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
+    }
+
+    if (is->video_st) {
+retry:
+        if (frame_queue_nb_remaining(&is->pictq) == 0) {
+            // nothing to do, no picture to display in the queue
+        } else {
+            double last_duration, duration, delay;
+            Frame *vp, *lastvp;
+
+            /* dequeue the picture */
+            lastvp = frame_queue_peek_last(&is->pictq);
+            vp = frame_queue_peek(&is->pictq);
+
+            if (vp->serial != is->videoq.serial) {
+                frame_queue_next(&is->pictq);
+                goto retry;
+            }
+
+            if (lastvp->serial != vp->serial)
+                is->frame_timer = av_gettime_relative() / 1000000.0;
+
+            if (is->paused)
+                goto display;
+
+            /* compute nominal last_duration */
+            last_duration = vp_duration(is, lastvp, vp);
+            delay = compute_target_delay(last_duration, is);
+
+            time= av_gettime_relative()/1000000.0;
+            if (time < is->frame_timer + delay) {
+                *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
+                goto display;
+            }
+
+            is->frame_timer += delay;
+            if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
+                is->frame_timer = time;
+
+            SDL_LockMutex(is->pictq.mutex);
+            if (!isnan(vp->pts))
+                update_video_pts(is, vp->pts, vp->pos, vp->serial);
+            SDL_UnlockMutex(is->pictq.mutex);
+
+            if (frame_queue_nb_remaining(&is->pictq) > 1) {
+                Frame *nextvp = frame_queue_peek_next(&is->pictq);
+                duration = vp_duration(is, vp, nextvp);
+                if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
+                    is->frame_drops_late++;
+                    frame_queue_next(&is->pictq);
+                    goto retry;
+                }
+            }
+
+            if (is->subtitle_st) {
+                    while (frame_queue_nb_remaining(&is->subpq) > 0) {
+                        sp = frame_queue_peek(&is->subpq);
+
+                        if (frame_queue_nb_remaining(&is->subpq) > 1)
+                            sp2 = frame_queue_peek_next(&is->subpq);
+                        else
+                            sp2 = NULL;
+
+                        if (sp->serial != is->subtitleq.serial
+                                || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
+                                || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
+                        {
+                            if (sp->uploaded) {
+                                int i;
+                                for (i = 0; i < sp->sub.num_rects; i++) {
+                                    AVSubtitleRect *sub_rect = sp->sub.rects[i];
+                                    uint8_t *pixels;
+                                    int pitch, j;
+
+                                    if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
+                                        for (j = 0; j < sub_rect->h; j++, pixels += pitch)
+                                            memset(pixels, 0, sub_rect->w << 2);
+                                        SDL_UnlockTexture(is->sub_texture);
+                                    }
+                                }
+                            }
+                            frame_queue_next(&is->subpq);
+                        } else {
+                            break;
+                        }
+                    }
+            }
+
+            frame_queue_next(&is->pictq);
+            is->force_refresh = 1;
+
+            if (is->step && !is->paused)
+                stream_toggle_pause(is);
+        }
+display:
+        /* display picture */
+        if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
+            video_display(is);
+    }
+    is->force_refresh = 0;
+    if (show_status) {
+        static int64_t last_time;
+        int64_t cur_time;
+        int aqsize, vqsize, sqsize;
+        double av_diff;
+
+        cur_time = av_gettime_relative();
+        if (!last_time || (cur_time - last_time) >= 30000) {
+            aqsize = 0;
+            vqsize = 0;
+            sqsize = 0;
+            if (is->audio_st)
+                aqsize = is->audioq.size;
+            if (is->video_st)
+                vqsize = is->videoq.size;
+            if (is->subtitle_st)
+                sqsize = is->subtitleq.size;
+            av_diff = 0;
+            if (is->audio_st && is->video_st)
+                av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
+            else if (is->video_st)
+                av_diff = get_master_clock(is) - get_clock(&is->vidclk);
+            else if (is->audio_st)
+                av_diff = get_master_clock(is) - get_clock(&is->audclk);
+            av_log(NULL, AV_LOG_INFO,
+                   "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
+                   get_master_clock(is),
+                   (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
+                   av_diff,
+                   is->frame_drops_early + is->frame_drops_late,
+                   aqsize / 1024,
+                   vqsize / 1024,
+                   sqsize,
+                   is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
+                   is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
+            fflush(stdout);
+            last_time = cur_time;
+        }
+    }
+}
+
+static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
+{
+    Frame *vp;
+
+#if defined(DEBUG_SYNC)
+    printf("frame_type=%c pts=%0.3f\n",
+           av_get_picture_type_char(src_frame->pict_type), pts);
+#endif
+
+    if (!(vp = frame_queue_peek_writable(&is->pictq)))
+        return -1;
+
+    vp->sar = src_frame->sample_aspect_ratio;
+    vp->uploaded = 0;
+
+    vp->width = src_frame->width;
+    vp->height = src_frame->height;
+    vp->format = src_frame->format;
+
+    vp->pts = pts;
+    vp->duration = duration;
+    vp->pos = pos;
+    vp->serial = serial;
+
+    set_default_window_size(vp->width, vp->height, vp->sar);
+
+    av_frame_move_ref(vp->frame, src_frame);
+    frame_queue_push(&is->pictq);
+    return 0;
+}
+
+static int get_video_frame(VideoState *is, AVFrame *frame)
+{
+    int got_picture;
+
+    if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
+        return -1;
+
+    if (got_picture) {
+        double dpts = NAN;
+
+        if (frame->pts != AV_NOPTS_VALUE)
+            dpts = av_q2d(is->video_st->time_base) * frame->pts;
+
+        frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
+
+        if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
+            if (frame->pts != AV_NOPTS_VALUE) {
+                double diff = dpts - get_master_clock(is);
+                if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
+                    diff - is->frame_last_filter_delay < 0 &&
+                    is->viddec.pkt_serial == is->vidclk.serial &&
+                    is->videoq.nb_packets) {
+                    is->frame_drops_early++;
+                    av_frame_unref(frame);
+                    got_picture = 0;
+                }
+            }
+        }
+    }
+
+    return got_picture;
+}
+
+#if CONFIG_AVFILTER
+static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
+                                 AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
+{
+    int ret, i;
+    int nb_filters = graph->nb_filters;
+    AVFilterInOut *outputs = NULL, *inputs = NULL;
+
+    if (filtergraph) {
+        outputs = avfilter_inout_alloc();
+        inputs  = avfilter_inout_alloc();
+        if (!outputs || !inputs) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+
+        outputs->name       = av_strdup("in");
+        outputs->filter_ctx = source_ctx;
+        outputs->pad_idx    = 0;
+        outputs->next       = NULL;
+
+        inputs->name        = av_strdup("out");
+        inputs->filter_ctx  = sink_ctx;
+        inputs->pad_idx     = 0;
+        inputs->next        = NULL;
+
+        if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
+            goto fail;
+    } else {
+        if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
+            goto fail;
+    }
+
+    /* Reorder the filters to ensure that inputs of the custom filters are merged first */
+    for (i = 0; i < graph->nb_filters - nb_filters; i++)
+        FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
+
+    ret = avfilter_graph_config(graph, NULL);
+fail:
+    avfilter_inout_free(&outputs);
+    avfilter_inout_free(&inputs);
+    return ret;
+}
+
+static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
+{
+    enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
+    char sws_flags_str[512] = "";
+    char buffersrc_args[256];
+    int ret;
+    AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
+    AVCodecParameters *codecpar = is->video_st->codecpar;
+    AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
+    AVDictionaryEntry *e = NULL;
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(pix_fmts); i++)
+        pix_fmts[i] = sdl_texture_format_map[i].format;
+
+    while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
+        if (!strcmp(e->key, "sws_flags")) {
+            av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
+        } else
+            av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
+    }
+    if (strlen(sws_flags_str))
+        sws_flags_str[strlen(sws_flags_str)-1] = '\0';
+
+    graph->scale_sws_opts = av_strdup(sws_flags_str);
+
+    snprintf(buffersrc_args, sizeof(buffersrc_args),
+             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
+             frame->width, frame->height, frame->format,
+             is->video_st->time_base.num, is->video_st->time_base.den,
+             codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
+    if (fr.num && fr.den)
+        av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
+
+    if ((ret = avfilter_graph_create_filter(&filt_src,
+                                            avfilter_get_by_name("buffer"),
+                                            "ffplay_buffer", buffersrc_args, NULL,
+                                            graph)) < 0)
+        goto fail;
+
+    ret = avfilter_graph_create_filter(&filt_out,
+                                       avfilter_get_by_name("buffersink"),
+                                       "ffplay_buffersink", NULL, NULL, graph);
+    if (ret < 0)
+        goto fail;
+
+    if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
+        goto fail;
+
+    last_filter = filt_out;
+
+/* Note: this macro adds a filter before the lastly added filter, so the
+ * processing order of the filters is in reverse */
+#define INSERT_FILT(name, arg) do {                                          \
+    AVFilterContext *filt_ctx;                                               \
+                                                                             \
+    ret = avfilter_graph_create_filter(&filt_ctx,                            \
+                                       avfilter_get_by_name(name),           \
+                                       "ffplay_" name, arg, NULL, graph);    \
+    if (ret < 0)                                                             \
+        goto fail;                                                           \
+                                                                             \
+    ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
+    if (ret < 0)                                                             \
+        goto fail;                                                           \
+                                                                             \
+    last_filter = filt_ctx;                                                  \
+} while (0)
+
+    if (autorotate) {
+        double theta  = get_rotation(is->video_st);
+
+        if (fabs(theta - 90) < 1.0) {
+            INSERT_FILT("transpose", "clock");
+        } else if (fabs(theta - 180) < 1.0) {
+            INSERT_FILT("hflip", NULL);
+            INSERT_FILT("vflip", NULL);
+        } else if (fabs(theta - 270) < 1.0) {
+            INSERT_FILT("transpose", "cclock");
+        } else if (fabs(theta) > 1.0) {
+            char rotate_buf[64];
+            snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
+            INSERT_FILT("rotate", rotate_buf);
+        }
+    }
+
+    if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
+        goto fail;
+
+    is->in_video_filter  = filt_src;
+    is->out_video_filter = filt_out;
+
+fail:
+    return ret;
+}
+
+static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
+{
+    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
+    int sample_rates[2] = { 0, -1 };
+    int64_t channel_layouts[2] = { 0, -1 };
+    int channels[2] = { 0, -1 };
+    AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
+    char aresample_swr_opts[512] = "";
+    AVDictionaryEntry *e = NULL;
+    char asrc_args[256];
+    int ret;
+
+    avfilter_graph_free(&is->agraph);
+    if (!(is->agraph = avfilter_graph_alloc()))
+        return AVERROR(ENOMEM);
+
+    while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
+        av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
+    if (strlen(aresample_swr_opts))
+        aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
+    av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
+
+    ret = snprintf(asrc_args, sizeof(asrc_args),
+                   "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
+                   is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
+                   is->audio_filter_src.channels,
+                   1, is->audio_filter_src.freq);
+    if (is->audio_filter_src.channel_layout)
+        snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
+                 ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
+
+    ret = avfilter_graph_create_filter(&filt_asrc,
+                                       avfilter_get_by_name("abuffer"), "ffplay_abuffer",
+                                       asrc_args, NULL, is->agraph);
+    if (ret < 0)
+        goto end;
+
+
+    ret = avfilter_graph_create_filter(&filt_asink,
+                                       avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
+                                       NULL, NULL, is->agraph);
+    if (ret < 0)
+        goto end;
+
+    if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
+        goto end;
+    if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
+        goto end;
+
+    if (force_output_format) {
+        channel_layouts[0] = is->audio_tgt.channel_layout;
+        channels       [0] = is->audio_tgt.channels;
+        sample_rates   [0] = is->audio_tgt.freq;
+        if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
+            goto end;
+        if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
+            goto end;
+        if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
+            goto end;
+        if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
+            goto end;
+    }
+
+
+    if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
+        goto end;
+
+    is->in_audio_filter  = filt_asrc;
+    is->out_audio_filter = filt_asink;
+
+end:
+    if (ret < 0)
+        avfilter_graph_free(&is->agraph);
+    return ret;
+}
+#endif  /* CONFIG_AVFILTER */
+
+static int audio_thread(void *arg)
+{
+    VideoState *is = arg;
+    AVFrame *frame = av_frame_alloc();
+    Frame *af;
+#if CONFIG_AVFILTER
+    int last_serial = -1;
+    int64_t dec_channel_layout;
+    int reconfigure;
+#endif
+    int got_frame = 0;
+    AVRational tb;
+    int ret = 0;
+
+    if (!frame)
+        return AVERROR(ENOMEM);
+
+    do {
+        if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
+            goto the_end;
+
+        if (got_frame) {
+                tb = (AVRational){1, frame->sample_rate};
+
+#if CONFIG_AVFILTER
+                dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
+
+                reconfigure =
+                    cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
+                                   frame->format, frame->channels)    ||
+                    is->audio_filter_src.channel_layout != dec_channel_layout ||
+                    is->audio_filter_src.freq           != frame->sample_rate ||
+                    is->auddec.pkt_serial               != last_serial;
+
+                if (reconfigure) {
+                    char buf1[1024], buf2[1024];
+                    av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
+                    av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
+                    av_log(NULL, AV_LOG_DEBUG,
+                           "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
+                           is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
+                           frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
+
+                    is->audio_filter_src.fmt            = frame->format;
+                    is->audio_filter_src.channels       = frame->channels;
+                    is->audio_filter_src.channel_layout = dec_channel_layout;
+                    is->audio_filter_src.freq           = frame->sample_rate;
+                    last_serial                         = is->auddec.pkt_serial;
+
+                    if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
+                        goto the_end;
+                }
+
+            if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
+                goto the_end;
+
+            while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
+                tb = av_buffersink_get_time_base(is->out_audio_filter);
+#endif
+                if (!(af = frame_queue_peek_writable(&is->sampq)))
+                    goto the_end;
+
+                af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
+                af->pos = frame->pkt_pos;
+                af->serial = is->auddec.pkt_serial;
+                af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
+
+                av_frame_move_ref(af->frame, frame);
+                frame_queue_push(&is->sampq);
+
+#if CONFIG_AVFILTER
+                if (is->audioq.serial != is->auddec.pkt_serial)
+                    break;
+            }
+            if (ret == AVERROR_EOF)
+                is->auddec.finished = is->auddec.pkt_serial;
+#endif
+        }
+    } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
+ the_end:
+#if CONFIG_AVFILTER
+    avfilter_graph_free(&is->agraph);
+#endif
+    av_frame_free(&frame);
+    return ret;
+}
+
+static int decoder_start(Decoder *d, int (*fn)(void *), void *arg)
+{
+    packet_queue_start(d->queue);
+    d->decoder_tid = SDL_CreateThread(fn, "decoder", arg);
+    if (!d->decoder_tid) {
+        av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
+        return AVERROR(ENOMEM);
+    }
+    return 0;
+}
+
+static int video_thread(void *arg)
+{
+    VideoState *is = arg;
+    AVFrame *frame = av_frame_alloc();
+    double pts;
+    double duration;
+    int ret;
+    AVRational tb = is->video_st->time_base;
+    AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
+
+#if CONFIG_AVFILTER
+    AVFilterGraph *graph = avfilter_graph_alloc();
+    AVFilterContext *filt_out = NULL, *filt_in = NULL;
+    int last_w = 0;
+    int last_h = 0;
+    enum AVPixelFormat last_format = -2;
+    int last_serial = -1;
+    int last_vfilter_idx = 0;
+    if (!graph) {
+        av_frame_free(&frame);
+        return AVERROR(ENOMEM);
+    }
+
+#endif
+
+    if (!frame) {
+#if CONFIG_AVFILTER
+        avfilter_graph_free(&graph);
+#endif
+        return AVERROR(ENOMEM);
+    }
+
+    for (;;) {
+        ret = get_video_frame(is, frame);
+        if (ret < 0)
+            goto the_end;
+        if (!ret)
+            continue;
+
+#if CONFIG_AVFILTER
+        if (   last_w != frame->width
+            || last_h != frame->height
+            || last_format != frame->format
+            || last_serial != is->viddec.pkt_serial
+            || last_vfilter_idx != is->vfilter_idx) {
+            av_log(NULL, AV_LOG_DEBUG,
+                   "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
+                   last_w, last_h,
+                   (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
+                   frame->width, frame->height,
+                   (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
+            avfilter_graph_free(&graph);
+            graph = avfilter_graph_alloc();
+            if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
+                SDL_Event event;
+                event.type = FF_QUIT_EVENT;
+                event.user.data1 = is;
+                SDL_PushEvent(&event);
+                goto the_end;
+            }
+            filt_in  = is->in_video_filter;
+            filt_out = is->out_video_filter;
+            last_w = frame->width;
+            last_h = frame->height;
+            last_format = frame->format;
+            last_serial = is->viddec.pkt_serial;
+            last_vfilter_idx = is->vfilter_idx;
+            frame_rate = av_buffersink_get_frame_rate(filt_out);
+        }
+
+        ret = av_buffersrc_add_frame(filt_in, frame);
+        if (ret < 0)
+            goto the_end;
+
+        while (ret >= 0) {
+            is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
+
+            ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
+            if (ret < 0) {
+                if (ret == AVERROR_EOF)
+                    is->viddec.finished = is->viddec.pkt_serial;
+                ret = 0;
+                break;
+            }
+
+            is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
+            if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
+                is->frame_last_filter_delay = 0;
+            tb = av_buffersink_get_time_base(filt_out);
+#endif
+            duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
+            pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
+            ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
+            av_frame_unref(frame);
+#if CONFIG_AVFILTER
+        }
+#endif
+
+        if (ret < 0)
+            goto the_end;
+    }
+ the_end:
+#if CONFIG_AVFILTER
+    avfilter_graph_free(&graph);
+#endif
+    av_frame_free(&frame);
+    return 0;
+}
+
+static int subtitle_thread(void *arg)
+{
+    VideoState *is = arg;
+    Frame *sp;
+    int got_subtitle;
+    double pts;
+
+    for (;;) {
+        if (!(sp = frame_queue_peek_writable(&is->subpq)))
+            return 0;
+
+        if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
+            break;
+
+        pts = 0;
+
+        if (got_subtitle && sp->sub.format == 0) {
+            if (sp->sub.pts != AV_NOPTS_VALUE)
+                pts = sp->sub.pts / (double)AV_TIME_BASE;
+            sp->pts = pts;
+            sp->serial = is->subdec.pkt_serial;
+            sp->width = is->subdec.avctx->width;
+            sp->height = is->subdec.avctx->height;
+            sp->uploaded = 0;
+
+            /* now we can update the picture count */
+            frame_queue_push(&is->subpq);
+        } else if (got_subtitle) {
+            avsubtitle_free(&sp->sub);
+        }
+    }
+    return 0;
+}
+
+/* copy samples for viewing in editor window */
+static void update_sample_display(VideoState *is, short *samples, int samples_size)
+{
+    int size, len;
+
+    size = samples_size / sizeof(short);
+    while (size > 0) {
+        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
+        if (len > size)
+            len = size;
+        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
+        samples += len;
+        is->sample_array_index += len;
+        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
+            is->sample_array_index = 0;
+        size -= len;
+    }
+}
+
+/* return the wanted number of samples to get better sync if sync_type is video
+ * or external master clock */
+static int synchronize_audio(VideoState *is, int nb_samples)
+{
+    int wanted_nb_samples = nb_samples;
+
+    /* if not master, then we try to remove or add samples to correct the clock */
+    if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
+        double diff, avg_diff;
+        int min_nb_samples, max_nb_samples;
+
+        diff = get_clock(&is->audclk) - get_master_clock(is);
+
+        if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
+            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
+            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
+                /* not enough measures to have a correct estimate */
+                is->audio_diff_avg_count++;
+            } else {
+                /* estimate the A-V difference */
+                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
+
+                if (fabs(avg_diff) >= is->audio_diff_threshold) {
+                    wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
+                    min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
+                    max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
+                    wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
+                }
+                av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
+                        diff, avg_diff, wanted_nb_samples - nb_samples,
+                        is->audio_clock, is->audio_diff_threshold);
+            }
+        } else {
+            /* too big difference : may be initial PTS errors, so
+               reset A-V filter */
+            is->audio_diff_avg_count = 0;
+            is->audio_diff_cum       = 0;
+        }
+    }
+
+    return wanted_nb_samples;
+}
+
+/**
+ * Decode one audio frame and return its uncompressed size.
+ *
+ * The processed audio frame is decoded, converted if required, and
+ * stored in is->audio_buf, with size in bytes given by the return
+ * value.
+ */
+static int audio_decode_frame(VideoState *is)
+{
+    int data_size, resampled_data_size;
+    int64_t dec_channel_layout;
+    av_unused double audio_clock0;
+    int wanted_nb_samples;
+    Frame *af;
+
+    if (is->paused)
+        return -1;
+
+    do {
+#if defined(_WIN32)
+        while (frame_queue_nb_remaining(&is->sampq) == 0) {
+            if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
+                return -1;
+            av_usleep (1000);
+        }
+#endif
+        if (!(af = frame_queue_peek_readable(&is->sampq)))
+            return -1;
+        frame_queue_next(&is->sampq);
+    } while (af->serial != is->audioq.serial);
+
+    data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
+                                           af->frame->nb_samples,
+                                           af->frame->format, 1);
+
+    dec_channel_layout =
+        (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
+        af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
+    wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
+
+    if (af->frame->format        != is->audio_src.fmt            ||
+        dec_channel_layout       != is->audio_src.channel_layout ||
+        af->frame->sample_rate   != is->audio_src.freq           ||
+        (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
+        swr_free(&is->swr_ctx);
+        is->swr_ctx = swr_alloc_set_opts(NULL,
+                                         is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
+                                         dec_channel_layout,           af->frame->format, af->frame->sample_rate,
+                                         0, NULL);
+        if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
+                    af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
+                    is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
+            swr_free(&is->swr_ctx);
+            return -1;
+        }
+        is->audio_src.channel_layout = dec_channel_layout;
+        is->audio_src.channels       = af->frame->channels;
+        is->audio_src.freq = af->frame->sample_rate;
+        is->audio_src.fmt = af->frame->format;
+    }
+
+    if (is->swr_ctx) {
+        const uint8_t **in = (const uint8_t **)af->frame->extended_data;
+        uint8_t **out = &is->audio_buf1;
+        int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
+        int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
+        int len2;
+        if (out_size < 0) {
+            av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
+            return -1;
+        }
+        if (wanted_nb_samples != af->frame->nb_samples) {
+            if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
+                                        wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
+                av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
+                return -1;
+            }
+        }
+        av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
+        if (!is->audio_buf1)
+            return AVERROR(ENOMEM);
+        len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
+        if (len2 < 0) {
+            av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
+            return -1;
+        }
+        if (len2 == out_count) {
+            av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
+            if (swr_init(is->swr_ctx) < 0)
+                swr_free(&is->swr_ctx);
+        }
+        is->audio_buf = is->audio_buf1;
+        resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
+    } else {
+        is->audio_buf = af->frame->data[0];
+        resampled_data_size = data_size;
+    }
+
+    audio_clock0 = is->audio_clock;
+    /* update the audio clock with the pts */
+    if (!isnan(af->pts))
+        is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
+    else
+        is->audio_clock = NAN;
+    is->audio_clock_serial = af->serial;
+#ifdef DEBUG
+    {
+        static double last_clock;
+        printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
+               is->audio_clock - last_clock,
+               is->audio_clock, audio_clock0);
+        last_clock = is->audio_clock;
+    }
+#endif
+    return resampled_data_size;
+}
+
+/* prepare a new audio buffer */
+static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
+{
+    VideoState *is = opaque;
+    int audio_size, len1;
+
+    audio_callback_time = av_gettime_relative();
+
+    while (len > 0) {
+        if (is->audio_buf_index >= is->audio_buf_size) {
+           audio_size = audio_decode_frame(is);
+           if (audio_size < 0) {
+                /* if error, just output silence */
+               is->audio_buf = NULL;
+               is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
+           } else {
+               if (is->show_mode != SHOW_MODE_VIDEO)
+                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
+               is->audio_buf_size = audio_size;
+           }
+           is->audio_buf_index = 0;
+        }
+        len1 = is->audio_buf_size - is->audio_buf_index;
+        if (len1 > len)
+            len1 = len;
+        if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
+            memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
+        else {
+            memset(stream, 0, len1);
+            if (!is->muted && is->audio_buf)
+                SDL_MixAudio(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1, is->audio_volume);
+        }
+        len -= len1;
+        stream += len1;
+        is->audio_buf_index += len1;
+    }
+    is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
+    /* Let's assume the audio driver that is used by SDL has two periods. */
+    if (!isnan(is->audio_clock)) {
+        set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
+        sync_clock_to_slave(&is->extclk, &is->audclk);
+    }
+}
+
+static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
+{
+    SDL_AudioSpec wanted_spec, spec;
+    const char *env;
+    static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
+    static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
+    int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
+
+    env = SDL_getenv("SDL_AUDIO_CHANNELS");
+    if (env) {
+        wanted_nb_channels = atoi(env);
+        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
+    }
+    if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
+        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
+        wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
+    }
+    wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
+    wanted_spec.channels = wanted_nb_channels;
+    wanted_spec.freq = wanted_sample_rate;
+    if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
+        av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
+        return -1;
+    }
+    while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
+        next_sample_rate_idx--;
+    wanted_spec.format = AUDIO_S16SYS;
+    wanted_spec.silence = 0;
+    wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
+    wanted_spec.callback = sdl_audio_callback;
+    wanted_spec.userdata = opaque;
+    while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
+        av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
+               wanted_spec.channels, wanted_spec.freq, SDL_GetError());
+        wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
+        if (!wanted_spec.channels) {
+            wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
+            wanted_spec.channels = wanted_nb_channels;
+            if (!wanted_spec.freq) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "No more combinations to try, audio open failed\n");
+                return -1;
+            }
+        }
+        wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
+    }
+    if (spec.format != AUDIO_S16SYS) {
+        av_log(NULL, AV_LOG_ERROR,
+               "SDL advised audio format %d is not supported!\n", spec.format);
+        return -1;
+    }
+    if (spec.channels != wanted_spec.channels) {
+        wanted_channel_layout = av_get_default_channel_layout(spec.channels);
+        if (!wanted_channel_layout) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "SDL advised channel count %d is not supported!\n", spec.channels);
+            return -1;
+        }
+    }
+
+    audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
+    audio_hw_params->freq = spec.freq;
+    audio_hw_params->channel_layout = wanted_channel_layout;
+    audio_hw_params->channels =  spec.channels;
+    audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
+    audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
+    if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
+        av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
+        return -1;
+    }
+    return spec.size;
+}
+
+/* open a given stream. Return 0 if OK */
+static int stream_component_open(VideoState *is, int stream_index)
+{
+    AVFormatContext *ic = is->ic;
+    AVCodecContext *avctx;
+    AVCodec *codec;
+    const char *forced_codec_name = NULL;
+    AVDictionary *opts = NULL;
+    AVDictionaryEntry *t = NULL;
+    int sample_rate, nb_channels;
+    int64_t channel_layout;
+    int ret = 0;
+    int stream_lowres = lowres;
+
+    if (stream_index < 0 || stream_index >= ic->nb_streams)
+        return -1;
+
+    avctx = avcodec_alloc_context3(NULL);
+    if (!avctx)
+        return AVERROR(ENOMEM);
+
+    ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
+    if (ret < 0)
+        goto fail;
+    av_codec_set_pkt_timebase(avctx, ic->streams[stream_index]->time_base);
+
+    codec = avcodec_find_decoder(avctx->codec_id);
+
+    switch(avctx->codec_type){
+        case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
+        case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
+        case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
+    }
+    if (forced_codec_name)
+        codec = avcodec_find_decoder_by_name(forced_codec_name);
+    if (!codec) {
+        if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
+                                      "No codec could be found with name '%s'\n", forced_codec_name);
+        else                   av_log(NULL, AV_LOG_WARNING,
+                                      "No codec could be found with id %d\n", avctx->codec_id);
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
+
+    avctx->codec_id = codec->id;
+    if(stream_lowres > av_codec_get_max_lowres(codec)){
+        av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
+                av_codec_get_max_lowres(codec));
+        stream_lowres = av_codec_get_max_lowres(codec);
+    }
+    av_codec_set_lowres(avctx, stream_lowres);
+
+#if FF_API_EMU_EDGE
+    if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
+#endif
+    if (fast)
+        avctx->flags2 |= AV_CODEC_FLAG2_FAST;
+#if FF_API_EMU_EDGE
+    if(codec->capabilities & AV_CODEC_CAP_DR1)
+        avctx->flags |= CODEC_FLAG_EMU_EDGE;
+#endif
+
+    opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
+    if (!av_dict_get(opts, "threads", NULL, 0))
+        av_dict_set(&opts, "threads", "auto", 0);
+    if (stream_lowres)
+        av_dict_set_int(&opts, "lowres", stream_lowres, 0);
+    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
+        av_dict_set(&opts, "refcounted_frames", "1", 0);
+    if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
+        goto fail;
+    }
+    if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
+        ret =  AVERROR_OPTION_NOT_FOUND;
+        goto fail;
+    }
+
+    is->eof = 0;
+    ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
+    switch (avctx->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+#if CONFIG_AVFILTER
+        {
+            AVFilterContext *sink;
+
+            is->audio_filter_src.freq           = avctx->sample_rate;
+            is->audio_filter_src.channels       = avctx->channels;
+            is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
+            is->audio_filter_src.fmt            = avctx->sample_fmt;
+            if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
+                goto fail;
+            sink = is->out_audio_filter;
+            sample_rate    = av_buffersink_get_sample_rate(sink);
+            nb_channels    = av_buffersink_get_channels(sink);
+            channel_layout = av_buffersink_get_channel_layout(sink);
+        }
+#else
+        sample_rate    = avctx->sample_rate;
+        nb_channels    = avctx->channels;
+        channel_layout = avctx->channel_layout;
+#endif
+
+        /* prepare audio output */
+        if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
+            goto fail;
+        is->audio_hw_buf_size = ret;
+        is->audio_src = is->audio_tgt;
+        is->audio_buf_size  = 0;
+        is->audio_buf_index = 0;
+
+        /* init averaging filter */
+        is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
+        is->audio_diff_avg_count = 0;
+        /* since we do not have a precise anough audio FIFO fullness,
+           we correct audio sync only if larger than this threshold */
+        is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
+
+        is->audio_stream = stream_index;
+        is->audio_st = ic->streams[stream_index];
+
+        decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
+        if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
+            is->auddec.start_pts = is->audio_st->start_time;
+            is->auddec.start_pts_tb = is->audio_st->time_base;
+        }
+        if ((ret = decoder_start(&is->auddec, audio_thread, is)) < 0)
+            goto out;
+        SDL_PauseAudio(0);
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        is->video_stream = stream_index;
+        is->video_st = ic->streams[stream_index];
+
+        decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
+        if ((ret = decoder_start(&is->viddec, video_thread, is)) < 0)
+            goto out;
+        is->queue_attachments_req = 1;
+        break;
+    case AVMEDIA_TYPE_SUBTITLE:
+        is->subtitle_stream = stream_index;
+        is->subtitle_st = ic->streams[stream_index];
+
+        decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
+        if ((ret = decoder_start(&is->subdec, subtitle_thread, is)) < 0)
+            goto out;
+        break;
+    default:
+        break;
+    }
+    goto out;
+
+fail:
+    avcodec_free_context(&avctx);
+out:
+    av_dict_free(&opts);
+
+    return ret;
+}
+
+static int decode_interrupt_cb(void *ctx)
+{
+    VideoState *is = ctx;
+    return is->abort_request;
+}
+
+static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
+    return stream_id < 0 ||
+           queue->abort_request ||
+           (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
+           queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
+}
+
+static int is_realtime(AVFormatContext *s)
+{
+    if(   !strcmp(s->iformat->name, "rtp")
+       || !strcmp(s->iformat->name, "rtsp")
+       || !strcmp(s->iformat->name, "sdp")
+    )
+        return 1;
+
+    if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
+                 || !strncmp(s->filename, "udp:", 4)
+                )
+    )
+        return 1;
+    return 0;
+}
+
+/* this thread gets the stream from the disk or the network */
+static int read_thread(void *arg)
+{
+    VideoState *is = arg;
+    AVFormatContext *ic = NULL;
+    int err, i, ret;
+    int st_index[AVMEDIA_TYPE_NB];
+    AVPacket pkt1, *pkt = &pkt1;
+    int64_t stream_start_time;
+    int pkt_in_play_range = 0;
+    AVDictionaryEntry *t;
+    SDL_mutex *wait_mutex = SDL_CreateMutex();
+    int scan_all_pmts_set = 0;
+    int64_t pkt_ts;
+
+    if (!wait_mutex) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    memset(st_index, -1, sizeof(st_index));
+    is->last_video_stream = is->video_stream = -1;
+    is->last_audio_stream = is->audio_stream = -1;
+    is->last_subtitle_stream = is->subtitle_stream = -1;
+    is->eof = 0;
+
+    ic = avformat_alloc_context();
+    if (!ic) {
+        av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+    ic->interrupt_callback.callback = decode_interrupt_cb;
+    ic->interrupt_callback.opaque = is;
+    if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
+        av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
+        scan_all_pmts_set = 1;
+    }
+    err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
+    if (err < 0) {
+        print_error(is->filename, err);
+        ret = -1;
+        goto fail;
+    }
+    if (scan_all_pmts_set)
+        av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
+
+    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
+        ret = AVERROR_OPTION_NOT_FOUND;
+        goto fail;
+    }
+    is->ic = ic;
+
+    if (genpts)
+        ic->flags |= AVFMT_FLAG_GENPTS;
+
+    av_format_inject_global_side_data(ic);
+
+    if (find_stream_info) {
+        AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
+        int orig_nb_streams = ic->nb_streams;
+
+        err = avformat_find_stream_info(ic, opts);
+
+        for (i = 0; i < orig_nb_streams; i++)
+            av_dict_free(&opts[i]);
+        av_freep(&opts);
+
+        if (err < 0) {
+            av_log(NULL, AV_LOG_WARNING,
+                   "%s: could not find codec parameters\n", is->filename);
+            ret = -1;
+            goto fail;
+        }
+    }
+
+    if (ic->pb)
+        ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
+
+    if (seek_by_bytes < 0)
+        seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
+
+    is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
+
+    if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
+        window_title = av_asprintf("%s - %s", t->value, input_filename);
+
+    /* if seeking requested, we execute it */
+    if (start_time != AV_NOPTS_VALUE) {
+        int64_t timestamp;
+
+        timestamp = start_time;
+        /* add the stream start time */
+        if (ic->start_time != AV_NOPTS_VALUE)
+            timestamp += ic->start_time;
+        ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
+                    is->filename, (double)timestamp / AV_TIME_BASE);
+        }
+    }
+
+    is->realtime = is_realtime(ic);
+
+    if (show_status)
+        av_dump_format(ic, 0, is->filename, 0);
+
+    for (i = 0; i < ic->nb_streams; i++) {
+        AVStream *st = ic->streams[i];
+        enum AVMediaType type = st->codecpar->codec_type;
+        st->discard = AVDISCARD_ALL;
+        if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
+            if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
+                st_index[type] = i;
+    }
+    for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
+        if (wanted_stream_spec[i] && st_index[i] == -1) {
+            av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
+            st_index[i] = INT_MAX;
+        }
+    }
+
+    if (!video_disable)
+        st_index[AVMEDIA_TYPE_VIDEO] =
+            av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
+                                st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
+    if (!audio_disable)
+        st_index[AVMEDIA_TYPE_AUDIO] =
+            av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
+                                st_index[AVMEDIA_TYPE_AUDIO],
+                                st_index[AVMEDIA_TYPE_VIDEO],
+                                NULL, 0);
+    if (!video_disable && !subtitle_disable)
+        st_index[AVMEDIA_TYPE_SUBTITLE] =
+            av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
+                                st_index[AVMEDIA_TYPE_SUBTITLE],
+                                (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
+                                 st_index[AVMEDIA_TYPE_AUDIO] :
+                                 st_index[AVMEDIA_TYPE_VIDEO]),
+                                NULL, 0);
+
+    is->show_mode = show_mode;
+    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
+        AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
+        AVCodecParameters *codecpar = st->codecpar;
+        AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
+        if (codecpar->width)
+            set_default_window_size(codecpar->width, codecpar->height, sar);
+    }
+
+    /* open the streams */
+    if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
+        stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
+    }
+
+    ret = -1;
+    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
+        ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
+    }
+    if (is->show_mode == SHOW_MODE_NONE)
+        is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
+
+    if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
+        stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
+    }
+
+    if (is->video_stream < 0 && is->audio_stream < 0) {
+        av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
+               is->filename);
+        ret = -1;
+        goto fail;
+    }
+
+    if (infinite_buffer < 0 && is->realtime)
+        infinite_buffer = 1;
+
+    for (;;) {
+        if (is->abort_request)
+            break;
+        if (is->paused != is->last_paused) {
+            is->last_paused = is->paused;
+            if (is->paused)
+                is->read_pause_return = av_read_pause(ic);
+            else
+                av_read_play(ic);
+        }
+#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
+        if (is->paused &&
+                (!strcmp(ic->iformat->name, "rtsp") ||
+                 (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
+            /* wait 10 ms to avoid trying to get another packet */
+            /* XXX: horrible */
+            SDL_Delay(10);
+            continue;
+        }
+#endif
+        if (is->seek_req) {
+            int64_t seek_target = is->seek_pos;
+            int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
+            int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
+// FIXME the +-2 is due to rounding being not done in the correct direction in generation
+//      of the seek_pos/seek_rel variables
+
+            ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "%s: error while seeking\n", is->ic->filename);
+            } else {
+                if (is->audio_stream >= 0) {
+                    packet_queue_flush(&is->audioq);
+                    packet_queue_put(&is->audioq, &flush_pkt);
+                }
+                if (is->subtitle_stream >= 0) {
+                    packet_queue_flush(&is->subtitleq);
+                    packet_queue_put(&is->subtitleq, &flush_pkt);
+                }
+                if (is->video_stream >= 0) {
+                    packet_queue_flush(&is->videoq);
+                    packet_queue_put(&is->videoq, &flush_pkt);
+                }
+                if (is->seek_flags & AVSEEK_FLAG_BYTE) {
+                   set_clock(&is->extclk, NAN, 0);
+                } else {
+                   set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
+                }
+            }
+            is->seek_req = 0;
+            is->queue_attachments_req = 1;
+            is->eof = 0;
+            if (is->paused)
+                step_to_next_frame(is);
+        }
+        if (is->queue_attachments_req) {
+            if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
+                AVPacket copy = { 0 };
+                if ((ret = av_packet_ref(&copy, &is->video_st->attached_pic)) < 0)
+                    goto fail;
+                packet_queue_put(&is->videoq, &copy);
+                packet_queue_put_nullpacket(&is->videoq, is->video_stream);
+            }
+            is->queue_attachments_req = 0;
+        }
+
+        /* if the queue are full, no need to read more */
+        if (infinite_buffer<1 &&
+              (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
+            || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
+                stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
+                stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
+            /* wait 10 ms */
+            SDL_LockMutex(wait_mutex);
+            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
+            SDL_UnlockMutex(wait_mutex);
+            continue;
+        }
+        if (!is->paused &&
+            (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
+            (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
+            if (loop != 1 && (!loop || --loop)) {
+                stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
+            } else if (autoexit) {
+                ret = AVERROR_EOF;
+                goto fail;
+            }
+        }
+        ret = av_read_frame(ic, pkt);
+        if (ret < 0) {
+            if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
+                if (is->video_stream >= 0)
+                    packet_queue_put_nullpacket(&is->videoq, is->video_stream);
+                if (is->audio_stream >= 0)
+                    packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
+                if (is->subtitle_stream >= 0)
+                    packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
+                is->eof = 1;
+            }
+            if (ic->pb && ic->pb->error)
+                break;
+            SDL_LockMutex(wait_mutex);
+            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
+            SDL_UnlockMutex(wait_mutex);
+            continue;
+        } else {
+            is->eof = 0;
+        }
+        /* check if packet is in play range specified by user, then queue, otherwise discard */
+        stream_start_time = ic->streams[pkt->stream_index]->start_time;
+        pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
+        pkt_in_play_range = duration == AV_NOPTS_VALUE ||
+                (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
+                av_q2d(ic->streams[pkt->stream_index]->time_base) -
+                (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
+                <= ((double)duration / 1000000);
+        if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
+            packet_queue_put(&is->audioq, pkt);
+        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
+                   && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
+            packet_queue_put(&is->videoq, pkt);
+        } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
+            packet_queue_put(&is->subtitleq, pkt);
+        } else {
+            av_packet_unref(pkt);
+        }
+    }
+
+    ret = 0;
+ fail:
+    if (ic && !is->ic)
+        avformat_close_input(&ic);
+
+    if (ret != 0) {
+        SDL_Event event;
+
+        event.type = FF_QUIT_EVENT;
+        event.user.data1 = is;
+        SDL_PushEvent(&event);
+    }
+    SDL_DestroyMutex(wait_mutex);
+    return 0;
+}
+
+static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
+{
+    VideoState *is;
+
+    is = av_mallocz(sizeof(VideoState));
+    if (!is)
+        return NULL;
+    is->filename = av_strdup(filename);
+    if (!is->filename)
+        goto fail;
+    is->iformat = iformat;
+    is->ytop    = 0;
+    is->xleft   = 0;
+
+    /* start video display */
+    if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
+        goto fail;
+    if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
+        goto fail;
+    if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
+        goto fail;
+
+    if (packet_queue_init(&is->videoq) < 0 ||
+        packet_queue_init(&is->audioq) < 0 ||
+        packet_queue_init(&is->subtitleq) < 0)
+        goto fail;
+
+    if (!(is->continue_read_thread = SDL_CreateCond())) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
+        goto fail;
+    }
+
+    init_clock(&is->vidclk, &is->videoq.serial);
+    init_clock(&is->audclk, &is->audioq.serial);
+    init_clock(&is->extclk, &is->extclk.serial);
+    is->audio_clock_serial = -1;
+    if (startup_volume < 0)
+        av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
+    if (startup_volume > 100)
+        av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
+    startup_volume = av_clip(startup_volume, 0, 100);
+    startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
+    is->audio_volume = startup_volume;
+    is->muted = 0;
+    is->av_sync_type = av_sync_type;
+    is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
+    if (!is->read_tid) {
+        av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
+fail:
+        stream_close(is);
+        return NULL;
+    }
+    return is;
+}
+
+static void stream_cycle_channel(VideoState *is, int codec_type)
+{
+    AVFormatContext *ic = is->ic;
+    int start_index, stream_index;
+    int old_index;
+    AVStream *st;
+    AVProgram *p = NULL;
+    int nb_streams = is->ic->nb_streams;
+
+    if (codec_type == AVMEDIA_TYPE_VIDEO) {
+        start_index = is->last_video_stream;
+        old_index = is->video_stream;
+    } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
+        start_index = is->last_audio_stream;
+        old_index = is->audio_stream;
+    } else {
+        start_index = is->last_subtitle_stream;
+        old_index = is->subtitle_stream;
+    }
+    stream_index = start_index;
+
+    if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
+        p = av_find_program_from_stream(ic, NULL, is->video_stream);
+        if (p) {
+            nb_streams = p->nb_stream_indexes;
+            for (start_index = 0; start_index < nb_streams; start_index++)
+                if (p->stream_index[start_index] == stream_index)
+                    break;
+            if (start_index == nb_streams)
+                start_index = -1;
+            stream_index = start_index;
+        }
+    }
+
+    for (;;) {
+        if (++stream_index >= nb_streams)
+        {
+            if (codec_type == AVMEDIA_TYPE_SUBTITLE)
+            {
+                stream_index = -1;
+                is->last_subtitle_stream = -1;
+                goto the_end;
+            }
+            if (start_index == -1)
+                return;
+            stream_index = 0;
+        }
+        if (stream_index == start_index)
+            return;
+        st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
+        if (st->codecpar->codec_type == codec_type) {
+            /* check that parameters are OK */
+            switch (codec_type) {
+            case AVMEDIA_TYPE_AUDIO:
+                if (st->codecpar->sample_rate != 0 &&
+                    st->codecpar->channels != 0)
+                    goto the_end;
+                break;
+            case AVMEDIA_TYPE_VIDEO:
+            case AVMEDIA_TYPE_SUBTITLE:
+                goto the_end;
+            default:
+                break;
+            }
+        }
+    }
+ the_end:
+    if (p && stream_index != -1)
+        stream_index = p->stream_index[stream_index];
+    av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
+           av_get_media_type_string(codec_type),
+           old_index,
+           stream_index);
+
+    stream_component_close(is, old_index);
+    stream_component_open(is, stream_index);
+}
+
+
+static void toggle_full_screen(VideoState *is)
+{
+    is_full_screen = !is_full_screen;
+    SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
+}
+
+static void toggle_audio_display(VideoState *is)
+{
+    int next = is->show_mode;
+    do {
+        next = (next + 1) % SHOW_MODE_NB;
+    } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
+    if (is->show_mode != next) {
+        is->force_refresh = 1;
+        is->show_mode = next;
+    }
+}
+
+static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
+    double remaining_time = 0.0;
+    SDL_PumpEvents();
+    while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
+        if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
+            SDL_ShowCursor(0);
+            cursor_hidden = 1;
+        }
+        if (remaining_time > 0.0)
+            av_usleep((int64_t)(remaining_time * 1000000.0));
+        remaining_time = REFRESH_RATE;
+        if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
+            video_refresh(is, &remaining_time);
+        SDL_PumpEvents();
+    }
+}
+
+static void seek_chapter(VideoState *is, int incr)
+{
+    int64_t pos = get_master_clock(is) * AV_TIME_BASE;
+    int i;
+
+    if (!is->ic->nb_chapters)
+        return;
+
+    /* find the current chapter */
+    for (i = 0; i < is->ic->nb_chapters; i++) {
+        AVChapter *ch = is->ic->chapters[i];
+        if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
+            i--;
+            break;
+        }
+    }
+
+    i += incr;
+    i = FFMAX(i, 0);
+    if (i >= is->ic->nb_chapters)
+        return;
+
+    av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
+    stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
+                                 AV_TIME_BASE_Q), 0, 0);
+}
+
+/* handle an event sent by the GUI */
+static void event_loop(VideoState *cur_stream)
+{
+    SDL_Event event;
+    double incr, pos, frac;
+
+    for (;;) {
+        double x;
+        refresh_loop_wait_event(cur_stream, &event);
+        switch (event.type) {
+        case SDL_KEYDOWN:
+            if (exit_on_keydown) {
+                do_exit(cur_stream);
+                break;
+            }
+            switch (event.key.keysym.sym) {
+            case SDLK_ESCAPE:
+            case SDLK_q:
+                do_exit(cur_stream);
+                break;
+            case SDLK_f:
+                toggle_full_screen(cur_stream);
+                cur_stream->force_refresh = 1;
+                break;
+            case SDLK_p:
+            case SDLK_SPACE:
+                toggle_pause(cur_stream);
+                break;
+            case SDLK_m:
+                toggle_mute(cur_stream);
+                break;
+            case SDLK_KP_MULTIPLY:
+            case SDLK_0:
+                update_volume(cur_stream, 1, SDL_VOLUME_STEP);
+                break;
+            case SDLK_KP_DIVIDE:
+            case SDLK_9:
+                update_volume(cur_stream, -1, SDL_VOLUME_STEP);
+                break;
+            case SDLK_s: // S: Step to next frame
+                step_to_next_frame(cur_stream);
+                break;
+            case SDLK_a:
+                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
+                break;
+            case SDLK_v:
+                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
+                break;
+            case SDLK_c:
+                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
+                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
+                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
+                break;
+            case SDLK_t:
+                stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
+                break;
+            case SDLK_w:
+#if CONFIG_AVFILTER
+                if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
+                    if (++cur_stream->vfilter_idx >= nb_vfilters)
+                        cur_stream->vfilter_idx = 0;
+                } else {
+                    cur_stream->vfilter_idx = 0;
+                    toggle_audio_display(cur_stream);
+                }
+#else
+                toggle_audio_display(cur_stream);
+#endif
+                break;
+            case SDLK_PAGEUP:
+                if (cur_stream->ic->nb_chapters <= 1) {
+                    incr = 600.0;
+                    goto do_seek;
+                }
+                seek_chapter(cur_stream, 1);
+                break;
+            case SDLK_PAGEDOWN:
+                if (cur_stream->ic->nb_chapters <= 1) {
+                    incr = -600.0;
+                    goto do_seek;
+                }
+                seek_chapter(cur_stream, -1);
+                break;
+            case SDLK_LEFT:
+                incr = -10.0;
+                goto do_seek;
+            case SDLK_RIGHT:
+                incr = 10.0;
+                goto do_seek;
+            case SDLK_UP:
+                incr = 60.0;
+                goto do_seek;
+            case SDLK_DOWN:
+                incr = -60.0;
+            do_seek:
+                    if (seek_by_bytes) {
+                        pos = -1;
+                        if (pos < 0 && cur_stream->video_stream >= 0)
+                            pos = frame_queue_last_pos(&cur_stream->pictq);
+                        if (pos < 0 && cur_stream->audio_stream >= 0)
+                            pos = frame_queue_last_pos(&cur_stream->sampq);
+                        if (pos < 0)
+                            pos = avio_tell(cur_stream->ic->pb);
+                        if (cur_stream->ic->bit_rate)
+                            incr *= cur_stream->ic->bit_rate / 8.0;
+                        else
+                            incr *= 180000.0;
+                        pos += incr;
+                        stream_seek(cur_stream, pos, incr, 1);
+                    } else {
+                        pos = get_master_clock(cur_stream);
+                        if (isnan(pos))
+                            pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
+                        pos += incr;
+                        if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
+                            pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
+                        stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
+                    }
+                break;
+            default:
+                break;
+            }
+            break;
+        case SDL_MOUSEBUTTONDOWN:
+            if (exit_on_mousedown) {
+                do_exit(cur_stream);
+                break;
+            }
+            if (event.button.button == SDL_BUTTON_LEFT) {
+                static int64_t last_mouse_left_click = 0;
+                if (av_gettime_relative() - last_mouse_left_click <= 500000) {
+                    toggle_full_screen(cur_stream);
+                    cur_stream->force_refresh = 1;
+                    last_mouse_left_click = 0;
+                } else {
+                    last_mouse_left_click = av_gettime_relative();
+                }
+            }
+        case SDL_MOUSEMOTION:
+            if (cursor_hidden) {
+                SDL_ShowCursor(1);
+                cursor_hidden = 0;
+            }
+            cursor_last_shown = av_gettime_relative();
+            if (event.type == SDL_MOUSEBUTTONDOWN) {
+                if (event.button.button != SDL_BUTTON_RIGHT)
+                    break;
+                x = event.button.x;
+            } else {
+                if (!(event.motion.state & SDL_BUTTON_RMASK))
+                    break;
+                x = event.motion.x;
+            }
+                if (seek_by_bytes || cur_stream->ic->duration <= 0) {
+                    uint64_t size =  avio_size(cur_stream->ic->pb);
+                    stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
+                } else {
+                    int64_t ts;
+                    int ns, hh, mm, ss;
+                    int tns, thh, tmm, tss;
+                    tns  = cur_stream->ic->duration / 1000000LL;
+                    thh  = tns / 3600;
+                    tmm  = (tns % 3600) / 60;
+                    tss  = (tns % 60);
+                    frac = x / cur_stream->width;
+                    ns   = frac * tns;
+                    hh   = ns / 3600;
+                    mm   = (ns % 3600) / 60;
+                    ss   = (ns % 60);
+                    av_log(NULL, AV_LOG_INFO,
+                           "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
+                            hh, mm, ss, thh, tmm, tss);
+                    ts = frac * cur_stream->ic->duration;
+                    if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
+                        ts += cur_stream->ic->start_time;
+                    stream_seek(cur_stream, ts, 0, 0);
+                }
+            break;
+        case SDL_WINDOWEVENT:
+            switch (event.window.event) {
+                case SDL_WINDOWEVENT_RESIZED:
+                    screen_width  = cur_stream->width  = event.window.data1;
+                    screen_height = cur_stream->height = event.window.data2;
+                    if (cur_stream->vis_texture) {
+                        SDL_DestroyTexture(cur_stream->vis_texture);
+                        cur_stream->vis_texture = NULL;
+                    }
+                case SDL_WINDOWEVENT_EXPOSED:
+                    cur_stream->force_refresh = 1;
+            }
+            break;
+        case SDL_QUIT:
+        case FF_QUIT_EVENT:
+            do_exit(cur_stream);
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+static int opt_frame_size(void *optctx, const char *opt, const char *arg)
+{
+    av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
+    return opt_default(NULL, "video_size", arg);
+}
+
+static int opt_width(void *optctx, const char *opt, const char *arg)
+{
+    screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
+    return 0;
+}
+
+static int opt_height(void *optctx, const char *opt, const char *arg)
+{
+    screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
+    return 0;
+}
+
+static int opt_format(void *optctx, const char *opt, const char *arg)
+{
+    file_iformat = av_find_input_format(arg);
+    if (!file_iformat) {
+        av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
+        return AVERROR(EINVAL);
+    }
+    return 0;
+}
+
+static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
+{
+    av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
+    return opt_default(NULL, "pixel_format", arg);
+}
+
+static int opt_sync(void *optctx, const char *opt, const char *arg)
+{
+    if (!strcmp(arg, "audio"))
+        av_sync_type = AV_SYNC_AUDIO_MASTER;
+    else if (!strcmp(arg, "video"))
+        av_sync_type = AV_SYNC_VIDEO_MASTER;
+    else if (!strcmp(arg, "ext"))
+        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
+    else {
+        av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
+        exit(1);
+    }
+    return 0;
+}
+
+static int opt_seek(void *optctx, const char *opt, const char *arg)
+{
+    start_time = parse_time_or_die(opt, arg, 1);
+    return 0;
+}
+
+static int opt_duration(void *optctx, const char *opt, const char *arg)
+{
+    duration = parse_time_or_die(opt, arg, 1);
+    return 0;
+}
+
+static int opt_show_mode(void *optctx, const char *opt, const char *arg)
+{
+    show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
+                !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
+                !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
+                parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
+    return 0;
+}
+
+static void opt_input_file(void *optctx, const char *filename)
+{
+    if (input_filename) {
+        av_log(NULL, AV_LOG_FATAL,
+               "Argument '%s' provided as input filename, but '%s' was already specified.\n",
+                filename, input_filename);
+        exit(1);
+    }
+    if (!strcmp(filename, "-"))
+        filename = "pipe:";
+    input_filename = filename;
+}
+
+static int opt_codec(void *optctx, const char *opt, const char *arg)
+{
+   const char *spec = strchr(opt, ':');
+   if (!spec) {
+       av_log(NULL, AV_LOG_ERROR,
+              "No media specifier was specified in '%s' in option '%s'\n",
+               arg, opt);
+       return AVERROR(EINVAL);
+   }
+   spec++;
+   switch (spec[0]) {
+   case 'a' :    audio_codec_name = arg; break;
+   case 's' : subtitle_codec_name = arg; break;
+   case 'v' :    video_codec_name = arg; break;
+   default:
+       av_log(NULL, AV_LOG_ERROR,
+              "Invalid media specifier '%s' in option '%s'\n", spec, opt);
+       return AVERROR(EINVAL);
+   }
+   return 0;
+}
+
+static int dummy;
+
+static const OptionDef options[] = {
+    CMDUTILS_COMMON_OPTIONS
+    { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
+    { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
+    { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
+    { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
+    { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
+    { "vn", OPT_BOOL, { &video_disable }, "disable video" },
+    { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
+    { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
+    { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
+    { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
+    { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
+    { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
+    { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
+    { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
+    { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
+    { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
+    { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
+    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
+    { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
+    { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
+    { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
+    { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
+    { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
+    { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
+    { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
+    { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
+    { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
+    { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
+    { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
+    { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
+    { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
+#if CONFIG_AVFILTER
+    { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
+    { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
+#endif
+    { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
+    { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
+    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
+    { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
+    { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
+    { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
+    { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
+    { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
+    { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
+    { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
+        "read and decode the streams to fill missing information with heuristics" },
+    { NULL, },
+};
+
+static void show_usage(void)
+{
+    av_log(NULL, AV_LOG_INFO, "Simple media player\n");
+    av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
+    av_log(NULL, AV_LOG_INFO, "\n");
+}
+
+void show_help_default(const char *opt, const char *arg)
+{
+    av_log_set_callback(log_callback_help);
+    show_usage();
+    show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
+    show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
+    printf("\n");
+    show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
+    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
+#if !CONFIG_AVFILTER
+    show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
+#else
+    show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
+#endif
+    printf("\nWhile playing:\n"
+           "q, ESC              quit\n"
+           "f                   toggle full screen\n"
+           "p, SPC              pause\n"
+           "m                   toggle mute\n"
+           "9, 0                decrease and increase volume respectively\n"
+           "/, *                decrease and increase volume respectively\n"
+           "a                   cycle audio channel in the current program\n"
+           "v                   cycle video channel\n"
+           "t                   cycle subtitle channel in the current program\n"
+           "c                   cycle program\n"
+           "w                   cycle video filters or show modes\n"
+           "s                   activate frame-step mode\n"
+           "left/right          seek backward/forward 10 seconds\n"
+           "down/up             seek backward/forward 1 minute\n"
+           "page down/page up   seek backward/forward 10 minutes\n"
+           "right mouse click   seek to percentage in file corresponding to fraction of width\n"
+           "left double-click   toggle full screen\n"
+           );
+}
+
+static int lockmgr(void **mtx, enum AVLockOp op)
+{
+   switch(op) {
+      case AV_LOCK_CREATE:
+          *mtx = SDL_CreateMutex();
+          if(!*mtx) {
+              av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
+              return 1;
+          }
+          return 0;
+      case AV_LOCK_OBTAIN:
+          return !!SDL_LockMutex(*mtx);
+      case AV_LOCK_RELEASE:
+          return !!SDL_UnlockMutex(*mtx);
+      case AV_LOCK_DESTROY:
+          SDL_DestroyMutex(*mtx);
+          return 0;
+   }
+   return 1;
+}
+
+/* Called from the main */
+int main(int argc, char **argv)
+{
+    int flags;
+    VideoState *is;
+
+    init_dynload();
+
+    av_log_set_flags(AV_LOG_SKIP_REPEATED);
+    parse_loglevel(argc, argv, options);
+
+    /* register all codecs, demux and protocols */
+#if CONFIG_AVDEVICE
+    avdevice_register_all();
+#endif
+#if CONFIG_AVFILTER
+    avfilter_register_all();
+#endif
+    av_register_all();
+    avformat_network_init();
+
+    init_opts();
+
+    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
+    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
+
+    show_banner(argc, argv, options);
+
+    parse_options(NULL, argc, argv, options, opt_input_file);
+
+    if (!input_filename) {
+        show_usage();
+        av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
+        av_log(NULL, AV_LOG_FATAL,
+               "Use -h to get full help or, even better, run 'man %s'\n", program_name);
+        exit(1);
+    }
+
+    if (display_disable) {
+        video_disable = 1;
+    }
+    flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
+    if (audio_disable)
+        flags &= ~SDL_INIT_AUDIO;
+    else {
+        /* Try to work around an occasional ALSA buffer underflow issue when the
+         * period size is NPOT due to ALSA resampling by forcing the buffer size. */
+        if (!SDL_getenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE"))
+            SDL_setenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE","1", 1);
+    }
+    if (display_disable)
+        flags &= ~SDL_INIT_VIDEO;
+    if (SDL_Init (flags)) {
+        av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
+        av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
+        exit(1);
+    }
+
+    SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
+    SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
+
+    if (av_lockmgr_register(lockmgr)) {
+        av_log(NULL, AV_LOG_FATAL, "Could not initialize lock manager!\n");
+        do_exit(NULL);
+    }
+
+    av_init_packet(&flush_pkt);
+    flush_pkt.data = (uint8_t *)&flush_pkt;
+
+    is = stream_open(input_filename, file_iformat);
+    if (!is) {
+        av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
+        do_exit(NULL);
+    }
+
+    event_loop(is);
+
+    /* never returns */
+
+    return 0;
+}
diff --git a/fftools/ffprobe.c b/fftools/ffprobe.c
new file mode 100644
index 0000000000..b2e8949d9f
--- /dev/null
+++ b/fftools/ffprobe.c
@@ -0,0 +1,3692 @@
+/*
+ * Copyright (c) 2007-2010 Stefano Sabatini
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple media prober based on the FFmpeg libraries
+ */
+
+#include "config.h"
+#include "libavutil/ffversion.h"
+
+#include <string.h>
+
+#include "libavformat/avformat.h"
+#include "libavcodec/avcodec.h"
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/bprint.h"
+#include "libavutil/display.h"
+#include "libavutil/hash.h"
+#include "libavutil/mastering_display_metadata.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/spherical.h"
+#include "libavutil/stereo3d.h"
+#include "libavutil/dict.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/libm.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/timecode.h"
+#include "libavutil/timestamp.h"
+#include "libavdevice/avdevice.h"
+#include "libswscale/swscale.h"
+#include "libswresample/swresample.h"
+#include "libpostproc/postprocess.h"
+#include "cmdutils.h"
+
+#include "libavutil/thread.h"
+
+#if !HAVE_THREADS
+#  ifdef pthread_mutex_lock
+#    undef pthread_mutex_lock
+#  endif
+#  define pthread_mutex_lock(a) do{}while(0)
+#  ifdef pthread_mutex_unlock
+#    undef pthread_mutex_unlock
+#  endif
+#  define pthread_mutex_unlock(a) do{}while(0)
+#endif
+
+typedef struct InputStream {
+    AVStream *st;
+
+    AVCodecContext *dec_ctx;
+} InputStream;
+
+typedef struct InputFile {
+    AVFormatContext *fmt_ctx;
+
+    InputStream *streams;
+    int       nb_streams;
+} InputFile;
+
+const char program_name[] = "ffprobe";
+const int program_birth_year = 2007;
+
+static int do_bitexact = 0;
+static int do_count_frames = 0;
+static int do_count_packets = 0;
+static int do_read_frames  = 0;
+static int do_read_packets = 0;
+static int do_show_chapters = 0;
+static int do_show_error   = 0;
+static int do_show_format  = 0;
+static int do_show_frames  = 0;
+static int do_show_packets = 0;
+static int do_show_programs = 0;
+static int do_show_streams = 0;
+static int do_show_stream_disposition = 0;
+static int do_show_data    = 0;
+static int do_show_program_version  = 0;
+static int do_show_library_versions = 0;
+static int do_show_pixel_formats = 0;
+static int do_show_pixel_format_flags = 0;
+static int do_show_pixel_format_components = 0;
+static int do_show_log = 0;
+
+static int do_show_chapter_tags = 0;
+static int do_show_format_tags = 0;
+static int do_show_frame_tags = 0;
+static int do_show_program_tags = 0;
+static int do_show_stream_tags = 0;
+static int do_show_packet_tags = 0;
+
+static int show_value_unit              = 0;
+static int use_value_prefix             = 0;
+static int use_byte_value_binary_prefix = 0;
+static int use_value_sexagesimal_format = 0;
+static int show_private_data            = 1;
+
+static char *print_format;
+static char *stream_specifier;
+static char *show_data_hash;
+
+typedef struct ReadInterval {
+    int id;             ///< identifier
+    int64_t start, end; ///< start, end in second/AV_TIME_BASE units
+    int has_start, has_end;
+    int start_is_offset, end_is_offset;
+    int duration_frames;
+} ReadInterval;
+
+static ReadInterval *read_intervals;
+static int read_intervals_nb = 0;
+
+static int find_stream_info  = 1;
+
+/* section structure definition */
+
+#define SECTION_MAX_NB_CHILDREN 10
+
+struct section {
+    int id;             ///< unique id identifying a section
+    const char *name;
+
+#define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level
+#define SECTION_FLAG_IS_ARRAY        2 ///< the section contains an array of elements of the same type
+#define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
+                                           ///  For these sections the element_name field is mandatory.
+    int flags;
+    int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
+    const char *element_name; ///< name of the contained element, if provided
+    const char *unique_name;  ///< unique section name, in case the name is ambiguous
+    AVDictionary *entries_to_show;
+    int show_all_entries;
+};
+
+typedef enum {
+    SECTION_ID_NONE = -1,
+    SECTION_ID_CHAPTER,
+    SECTION_ID_CHAPTER_TAGS,
+    SECTION_ID_CHAPTERS,
+    SECTION_ID_ERROR,
+    SECTION_ID_FORMAT,
+    SECTION_ID_FORMAT_TAGS,
+    SECTION_ID_FRAME,
+    SECTION_ID_FRAMES,
+    SECTION_ID_FRAME_TAGS,
+    SECTION_ID_FRAME_SIDE_DATA_LIST,
+    SECTION_ID_FRAME_SIDE_DATA,
+    SECTION_ID_FRAME_LOG,
+    SECTION_ID_FRAME_LOGS,
+    SECTION_ID_LIBRARY_VERSION,
+    SECTION_ID_LIBRARY_VERSIONS,
+    SECTION_ID_PACKET,
+    SECTION_ID_PACKET_TAGS,
+    SECTION_ID_PACKETS,
+    SECTION_ID_PACKETS_AND_FRAMES,
+    SECTION_ID_PACKET_SIDE_DATA_LIST,
+    SECTION_ID_PACKET_SIDE_DATA,
+    SECTION_ID_PIXEL_FORMAT,
+    SECTION_ID_PIXEL_FORMAT_FLAGS,
+    SECTION_ID_PIXEL_FORMAT_COMPONENT,
+    SECTION_ID_PIXEL_FORMAT_COMPONENTS,
+    SECTION_ID_PIXEL_FORMATS,
+    SECTION_ID_PROGRAM_STREAM_DISPOSITION,
+    SECTION_ID_PROGRAM_STREAM_TAGS,
+    SECTION_ID_PROGRAM,
+    SECTION_ID_PROGRAM_STREAMS,
+    SECTION_ID_PROGRAM_STREAM,
+    SECTION_ID_PROGRAM_TAGS,
+    SECTION_ID_PROGRAM_VERSION,
+    SECTION_ID_PROGRAMS,
+    SECTION_ID_ROOT,
+    SECTION_ID_STREAM,
+    SECTION_ID_STREAM_DISPOSITION,
+    SECTION_ID_STREAMS,
+    SECTION_ID_STREAM_TAGS,
+    SECTION_ID_STREAM_SIDE_DATA_LIST,
+    SECTION_ID_STREAM_SIDE_DATA,
+    SECTION_ID_SUBTITLE,
+} SectionID;
+
+static struct section sections[] = {
+    [SECTION_ID_CHAPTERS] =           { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },
+    [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
+    [SECTION_ID_CHAPTER_TAGS] =       { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
+    [SECTION_ID_ERROR] =              { SECTION_ID_ERROR, "error", 0, { -1 } },
+    [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
+    [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
+    [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, SECTION_ID_SUBTITLE, -1 } },
+    [SECTION_ID_FRAME] =              { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, SECTION_ID_FRAME_SIDE_DATA_LIST, SECTION_ID_FRAME_LOGS, -1 } },
+    [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
+    [SECTION_ID_FRAME_SIDE_DATA_LIST] ={ SECTION_ID_FRAME_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_SIDE_DATA, -1 }, .element_name = "side_data", .unique_name = "frame_side_data_list" },
+    [SECTION_ID_FRAME_SIDE_DATA] =     { SECTION_ID_FRAME_SIDE_DATA, "side_data", 0, { -1 } },
+    [SECTION_ID_FRAME_LOGS] =         { SECTION_ID_FRAME_LOGS, "logs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME_LOG, -1 } },
+    [SECTION_ID_FRAME_LOG] =          { SECTION_ID_FRAME_LOG, "log", 0, { -1 },  },
+    [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },
+    [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
+    [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
+    [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
+    [SECTION_ID_PACKET] =             { SECTION_ID_PACKET, "packet", 0, { SECTION_ID_PACKET_TAGS, SECTION_ID_PACKET_SIDE_DATA_LIST, -1 } },
+    [SECTION_ID_PACKET_TAGS] =        { SECTION_ID_PACKET_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "packet_tags" },
+    [SECTION_ID_PACKET_SIDE_DATA_LIST] ={ SECTION_ID_PACKET_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET_SIDE_DATA, -1 }, .element_name = "side_data", .unique_name = "packet_side_data_list" },
+    [SECTION_ID_PACKET_SIDE_DATA] =     { SECTION_ID_PACKET_SIDE_DATA, "side_data", 0, { -1 } },
+    [SECTION_ID_PIXEL_FORMATS] =      { SECTION_ID_PIXEL_FORMATS, "pixel_formats", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PIXEL_FORMAT, -1 } },
+    [SECTION_ID_PIXEL_FORMAT] =       { SECTION_ID_PIXEL_FORMAT, "pixel_format", 0, { SECTION_ID_PIXEL_FORMAT_FLAGS, SECTION_ID_PIXEL_FORMAT_COMPONENTS, -1 } },
+    [SECTION_ID_PIXEL_FORMAT_FLAGS] = { SECTION_ID_PIXEL_FORMAT_FLAGS, "flags", 0, { -1 }, .unique_name = "pixel_format_flags" },
+    [SECTION_ID_PIXEL_FORMAT_COMPONENTS] = { SECTION_ID_PIXEL_FORMAT_COMPONENTS, "components", SECTION_FLAG_IS_ARRAY, {SECTION_ID_PIXEL_FORMAT_COMPONENT, -1 }, .unique_name = "pixel_format_components" },
+    [SECTION_ID_PIXEL_FORMAT_COMPONENT]  = { SECTION_ID_PIXEL_FORMAT_COMPONENT, "component", 0, { -1 } },
+    [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
+    [SECTION_ID_PROGRAM_STREAM_TAGS] =        { SECTION_ID_PROGRAM_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_stream_tags" },
+    [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
+    [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
+    [SECTION_ID_PROGRAM_STREAM] =             { SECTION_ID_PROGRAM_STREAM, "stream", 0, { SECTION_ID_PROGRAM_STREAM_DISPOSITION, SECTION_ID_PROGRAM_STREAM_TAGS, -1 }, .unique_name = "program_stream" },
+    [SECTION_ID_PROGRAM_TAGS] =               { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
+    [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
+    [SECTION_ID_PROGRAMS] =                   { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },
+    [SECTION_ID_ROOT] =               { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,
+                                        { SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,
+                                          SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS,
+                                          SECTION_ID_PIXEL_FORMATS, -1} },
+    [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },
+    [SECTION_ID_STREAM] =             { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, SECTION_ID_STREAM_SIDE_DATA_LIST, -1 } },
+    [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
+    [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
+    [SECTION_ID_STREAM_SIDE_DATA_LIST] ={ SECTION_ID_STREAM_SIDE_DATA_LIST, "side_data_list", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM_SIDE_DATA, -1 }, .element_name = "side_data", .unique_name = "stream_side_data_list" },
+    [SECTION_ID_STREAM_SIDE_DATA] =     { SECTION_ID_STREAM_SIDE_DATA, "side_data", 0, { -1 } },
+    [SECTION_ID_SUBTITLE] =           { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },
+};
+
+static const OptionDef *options;
+
+/* FFprobe context */
+static const char *input_filename;
+static AVInputFormat *iformat = NULL;
+
+static struct AVHashContext *hash;
+
+static const struct {
+    double bin_val;
+    double dec_val;
+    const char *bin_str;
+    const char *dec_str;
+} si_prefixes[] = {
+    { 1.0, 1.0, "", "" },
+    { 1.024e3, 1e3, "Ki", "K" },
+    { 1.048576e6, 1e6, "Mi", "M" },
+    { 1.073741824e9, 1e9, "Gi", "G" },
+    { 1.099511627776e12, 1e12, "Ti", "T" },
+    { 1.125899906842624e15, 1e15, "Pi", "P" },
+};
+
+static const char unit_second_str[]         = "s"    ;
+static const char unit_hertz_str[]          = "Hz"   ;
+static const char unit_byte_str[]           = "byte" ;
+static const char unit_bit_per_second_str[] = "bit/s";
+
+static int nb_streams;
+static uint64_t *nb_streams_packets;
+static uint64_t *nb_streams_frames;
+static int *selected_streams;
+
+#if HAVE_THREADS
+pthread_mutex_t log_mutex;
+#endif
+typedef struct LogBuffer {
+    char *context_name;
+    int log_level;
+    char *log_message;
+    AVClassCategory category;
+    char *parent_name;
+    AVClassCategory parent_category;
+}LogBuffer;
+
+static LogBuffer *log_buffer;
+static int log_buffer_size;
+
+static void log_callback(void *ptr, int level, const char *fmt, va_list vl)
+{
+    AVClass* avc = ptr ? *(AVClass **) ptr : NULL;
+    va_list vl2;
+    char line[1024];
+    static int print_prefix = 1;
+    void *new_log_buffer;
+
+    va_copy(vl2, vl);
+    av_log_default_callback(ptr, level, fmt, vl);
+    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
+    va_end(vl2);
+
+#if HAVE_THREADS
+    pthread_mutex_lock(&log_mutex);
+
+    new_log_buffer = av_realloc_array(log_buffer, log_buffer_size + 1, sizeof(*log_buffer));
+    if (new_log_buffer) {
+        char *msg;
+        int i;
+
+        log_buffer = new_log_buffer;
+        memset(&log_buffer[log_buffer_size], 0, sizeof(log_buffer[log_buffer_size]));
+        log_buffer[log_buffer_size].context_name= avc ? av_strdup(avc->item_name(ptr)) : NULL;
+        if (avc) {
+            if (avc->get_category) log_buffer[log_buffer_size].category = avc->get_category(ptr);
+            else                   log_buffer[log_buffer_size].category = avc->category;
+        }
+        log_buffer[log_buffer_size].log_level   = level;
+        msg = log_buffer[log_buffer_size].log_message = av_strdup(line);
+        for (i=strlen(msg) - 1; i>=0 && msg[i] == '\n'; i--) {
+            msg[i] = 0;
+        }
+        if (avc && avc->parent_log_context_offset) {
+            AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) +
+                                   avc->parent_log_context_offset);
+            if (parent && *parent) {
+                log_buffer[log_buffer_size].parent_name = av_strdup((*parent)->item_name(parent));
+                log_buffer[log_buffer_size].parent_category =
+                    (*parent)->get_category ? (*parent)->get_category(parent) :(*parent)->category;
+            }
+        }
+        log_buffer_size ++;
+    }
+
+    pthread_mutex_unlock(&log_mutex);
+#endif
+}
+
+static void ffprobe_cleanup(int ret)
+{
+    int i;
+    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
+        av_dict_free(&(sections[i].entries_to_show));
+
+#if HAVE_THREADS
+    pthread_mutex_destroy(&log_mutex);
+#endif
+}
+
+struct unit_value {
+    union { double d; long long int i; } val;
+    const char *unit;
+};
+
+static char *value_string(char *buf, int buf_size, struct unit_value uv)
+{
+    double vald;
+    long long int vali;
+    int show_float = 0;
+
+    if (uv.unit == unit_second_str) {
+        vald = uv.val.d;
+        show_float = 1;
+    } else {
+        vald = vali = uv.val.i;
+    }
+
+    if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
+        double secs;
+        int hours, mins;
+        secs  = vald;
+        mins  = (int)secs / 60;
+        secs  = secs - mins * 60;
+        hours = mins / 60;
+        mins %= 60;
+        snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
+    } else {
+        const char *prefix_string = "";
+
+        if (use_value_prefix && vald > 1) {
+            long long int index;
+
+            if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
+                index = (long long int) (log2(vald)) / 10;
+                index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
+                vald /= si_prefixes[index].bin_val;
+                prefix_string = si_prefixes[index].bin_str;
+            } else {
+                index = (long long int) (log10(vald)) / 3;
+                index = av_clip(index, 0, FF_ARRAY_ELEMS(si_prefixes) - 1);
+                vald /= si_prefixes[index].dec_val;
+                prefix_string = si_prefixes[index].dec_str;
+            }
+            vali = vald;
+        }
+
+        if (show_float || (use_value_prefix && vald != (long long int)vald))
+            snprintf(buf, buf_size, "%f", vald);
+        else
+            snprintf(buf, buf_size, "%lld", vali);
+        av_strlcatf(buf, buf_size, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
+                 prefix_string, show_value_unit ? uv.unit : "");
+    }
+
+    return buf;
+}
+
+/* WRITERS API */
+
+typedef struct WriterContext WriterContext;
+
+#define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
+#define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
+
+typedef enum {
+    WRITER_STRING_VALIDATION_FAIL,
+    WRITER_STRING_VALIDATION_REPLACE,
+    WRITER_STRING_VALIDATION_IGNORE,
+    WRITER_STRING_VALIDATION_NB
+} StringValidation;
+
+typedef struct Writer {
+    const AVClass *priv_class;      ///< private class of the writer, if any
+    int priv_size;                  ///< private size for the writer context
+    const char *name;
+
+    int  (*init)  (WriterContext *wctx);
+    void (*uninit)(WriterContext *wctx);
+
+    void (*print_section_header)(WriterContext *wctx);
+    void (*print_section_footer)(WriterContext *wctx);
+    void (*print_integer)       (WriterContext *wctx, const char *, long long int);
+    void (*print_rational)      (WriterContext *wctx, AVRational *q, char *sep);
+    void (*print_string)        (WriterContext *wctx, const char *, const char *);
+    int flags;                  ///< a combination or WRITER_FLAG_*
+} Writer;
+
+#define SECTION_MAX_NB_LEVELS 10
+
+struct WriterContext {
+    const AVClass *class;           ///< class of the writer
+    const Writer *writer;           ///< the Writer of which this is an instance
+    char *name;                     ///< name of this writer instance
+    void *priv;                     ///< private data for use by the filter
+
+    const struct section *sections; ///< array containing all sections
+    int nb_sections;                ///< number of sections
+
+    int level;                      ///< current level, starting from 0
+
+    /** number of the item printed in the given section, starting from 0 */
+    unsigned int nb_item[SECTION_MAX_NB_LEVELS];
+
+    /** section per each level */
+    const struct section *section[SECTION_MAX_NB_LEVELS];
+    AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
+                                                  ///  used by various writers
+
+    unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
+    unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
+    unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
+
+    int string_validation;
+    char *string_validation_replacement;
+    unsigned int string_validation_utf8_flags;
+};
+
+static const char *writer_get_name(void *p)
+{
+    WriterContext *wctx = p;
+    return wctx->writer->name;
+}
+
+#define OFFSET(x) offsetof(WriterContext, x)
+
+static const AVOption writer_options[] = {
+    { "string_validation", "set string validation mode",
+      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
+    { "sv", "set string validation mode",
+      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
+    { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },
+    { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
+    { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },
+    { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},
+    { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},
+    { NULL }
+};
+
+static void *writer_child_next(void *obj, void *prev)
+{
+    WriterContext *ctx = obj;
+    if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
+        return ctx->priv;
+    return NULL;
+}
+
+static const AVClass writer_class = {
+    .class_name = "Writer",
+    .item_name  = writer_get_name,
+    .option     = writer_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+    .child_next = writer_child_next,
+};
+
+static void writer_close(WriterContext **wctx)
+{
+    int i;
+
+    if (!*wctx)
+        return;
+
+    if ((*wctx)->writer->uninit)
+        (*wctx)->writer->uninit(*wctx);
+    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
+        av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
+    if ((*wctx)->writer->priv_class)
+        av_opt_free((*wctx)->priv);
+    av_freep(&((*wctx)->priv));
+    av_opt_free(*wctx);
+    av_freep(wctx);
+}
+
+static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)
+{
+    int i;
+    av_bprintf(bp, "0X");
+    for (i = 0; i < ubuf_size; i++)
+        av_bprintf(bp, "%02X", ubuf[i]);
+}
+
+
+static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
+                       const struct section *sections, int nb_sections)
+{
+    int i, ret = 0;
+
+    if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    (*wctx)->class = &writer_class;
+    (*wctx)->writer = writer;
+    (*wctx)->level = -1;
+    (*wctx)->sections = sections;
+    (*wctx)->nb_sections = nb_sections;
+
+    av_opt_set_defaults(*wctx);
+
+    if (writer->priv_class) {
+        void *priv_ctx = (*wctx)->priv;
+        *((const AVClass **)priv_ctx) = writer->priv_class;
+        av_opt_set_defaults(priv_ctx);
+    }
+
+    /* convert options to dictionary */
+    if (args) {
+        AVDictionary *opts = NULL;
+        AVDictionaryEntry *opt = NULL;
+
+        if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
+            av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
+            av_dict_free(&opts);
+            goto fail;
+        }
+
+        while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
+            if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
+                av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
+                       opt->key, opt->value);
+                av_dict_free(&opts);
+                goto fail;
+            }
+        }
+
+        av_dict_free(&opts);
+    }
+
+    /* validate replace string */
+    {
+        const uint8_t *p = (*wctx)->string_validation_replacement;
+        const uint8_t *endp = p + strlen(p);
+        while (*p) {
+            const uint8_t *p0 = p;
+            int32_t code;
+            ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);
+            if (ret < 0) {
+                AVBPrint bp;
+                av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
+                bprint_bytes(&bp, p0, p-p0),
+                    av_log(wctx, AV_LOG_ERROR,
+                           "Invalid UTF8 sequence %s found in string validation replace '%s'\n",
+                           bp.str, (*wctx)->string_validation_replacement);
+                return ret;
+            }
+        }
+    }
+
+    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
+        av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    if ((*wctx)->writer->init)
+        ret = (*wctx)->writer->init(*wctx);
+    if (ret < 0)
+        goto fail;
+
+    return 0;
+
+fail:
+    writer_close(wctx);
+    return ret;
+}
+
+static inline void writer_print_section_header(WriterContext *wctx,
+                                               int section_id)
+{
+    int parent_section_id;
+    wctx->level++;
+    av_assert0(wctx->level < SECTION_MAX_NB_LEVELS);
+    parent_section_id = wctx->level ?
+        (wctx->section[wctx->level-1])->id : SECTION_ID_NONE;
+
+    wctx->nb_item[wctx->level] = 0;
+    wctx->section[wctx->level] = &wctx->sections[section_id];
+
+    if (section_id == SECTION_ID_PACKETS_AND_FRAMES) {
+        wctx->nb_section_packet = wctx->nb_section_frame =
+        wctx->nb_section_packet_frame = 0;
+    } else if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
+        wctx->nb_section_packet_frame = section_id == SECTION_ID_PACKET ?
+            wctx->nb_section_packet : wctx->nb_section_frame;
+    }
+
+    if (wctx->writer->print_section_header)
+        wctx->writer->print_section_header(wctx);
+}
+
+static inline void writer_print_section_footer(WriterContext *wctx)
+{
+    int section_id = wctx->section[wctx->level]->id;
+    int parent_section_id = wctx->level ?
+        wctx->section[wctx->level-1]->id : SECTION_ID_NONE;
+
+    if (parent_section_id != SECTION_ID_NONE)
+        wctx->nb_item[wctx->level-1]++;
+    if (parent_section_id == SECTION_ID_PACKETS_AND_FRAMES) {
+        if (section_id == SECTION_ID_PACKET) wctx->nb_section_packet++;
+        else                                     wctx->nb_section_frame++;
+    }
+    if (wctx->writer->print_section_footer)
+        wctx->writer->print_section_footer(wctx);
+    wctx->level--;
+}
+
+static inline void writer_print_integer(WriterContext *wctx,
+                                        const char *key, long long int val)
+{
+    const struct section *section = wctx->section[wctx->level];
+
+    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
+        wctx->writer->print_integer(wctx, key, val);
+        wctx->nb_item[wctx->level]++;
+    }
+}
+
+static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
+{
+    const uint8_t *p, *endp;
+    AVBPrint dstbuf;
+    int invalid_chars_nb = 0, ret = 0;
+
+    av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    endp = src + strlen(src);
+    for (p = (uint8_t *)src; *p;) {
+        uint32_t code;
+        int invalid = 0;
+        const uint8_t *p0 = p;
+
+        if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
+            AVBPrint bp;
+            av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
+            bprint_bytes(&bp, p0, p-p0);
+            av_log(wctx, AV_LOG_DEBUG,
+                   "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
+            invalid = 1;
+        }
+
+        if (invalid) {
+            invalid_chars_nb++;
+
+            switch (wctx->string_validation) {
+            case WRITER_STRING_VALIDATION_FAIL:
+                av_log(wctx, AV_LOG_ERROR,
+                       "Invalid UTF-8 sequence found in string '%s'\n", src);
+                ret = AVERROR_INVALIDDATA;
+                goto end;
+                break;
+
+            case WRITER_STRING_VALIDATION_REPLACE:
+                av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
+                break;
+            }
+        }
+
+        if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
+            av_bprint_append_data(&dstbuf, p0, p-p0);
+    }
+
+    if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
+        av_log(wctx, AV_LOG_WARNING,
+               "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
+               invalid_chars_nb, src, wctx->string_validation_replacement);
+    }
+
+end:
+    av_bprint_finalize(&dstbuf, dstp);
+    return ret;
+}
+
+#define PRINT_STRING_OPT      1
+#define PRINT_STRING_VALIDATE 2
+
+static inline int writer_print_string(WriterContext *wctx,
+                                      const char *key, const char *val, int flags)
+{
+    const struct section *section = wctx->section[wctx->level];
+    int ret = 0;
+
+    if ((flags & PRINT_STRING_OPT)
+        && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
+        return 0;
+
+    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
+        if (flags & PRINT_STRING_VALIDATE) {
+            char *key1 = NULL, *val1 = NULL;
+            ret = validate_string(wctx, &key1, key);
+            if (ret < 0) goto end;
+            ret = validate_string(wctx, &val1, val);
+            if (ret < 0) goto end;
+            wctx->writer->print_string(wctx, key1, val1);
+        end:
+            if (ret < 0) {
+                av_log(wctx, AV_LOG_ERROR,
+                       "Invalid key=value string combination %s=%s in section %s\n",
+                       key, val, section->unique_name);
+            }
+            av_free(key1);
+            av_free(val1);
+        } else {
+            wctx->writer->print_string(wctx, key, val);
+        }
+
+        wctx->nb_item[wctx->level]++;
+    }
+
+    return ret;
+}
+
+static inline void writer_print_rational(WriterContext *wctx,
+                                         const char *key, AVRational q, char sep)
+{
+    AVBPrint buf;
+    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
+    av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
+    writer_print_string(wctx, key, buf.str, 0);
+}
+
+static void writer_print_time(WriterContext *wctx, const char *key,
+                              int64_t ts, const AVRational *time_base, int is_duration)
+{
+    char buf[128];
+
+    if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
+        writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
+    } else {
+        double d = ts * av_q2d(*time_base);
+        struct unit_value uv;
+        uv.val.d = d;
+        uv.unit = unit_second_str;
+        value_string(buf, sizeof(buf), uv);
+        writer_print_string(wctx, key, buf, 0);
+    }
+}
+
+static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
+{
+    if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
+        writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
+    } else {
+        writer_print_integer(wctx, key, ts);
+    }
+}
+
+static void writer_print_data(WriterContext *wctx, const char *name,
+                              uint8_t *data, int size)
+{
+    AVBPrint bp;
+    int offset = 0, l, i;
+
+    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
+    av_bprintf(&bp, "\n");
+    while (size) {
+        av_bprintf(&bp, "%08x: ", offset);
+        l = FFMIN(size, 16);
+        for (i = 0; i < l; i++) {
+            av_bprintf(&bp, "%02x", data[i]);
+            if (i & 1)
+                av_bprintf(&bp, " ");
+        }
+        av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
+        for (i = 0; i < l; i++)
+            av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
+        av_bprintf(&bp, "\n");
+        offset += l;
+        data   += l;
+        size   -= l;
+    }
+    writer_print_string(wctx, name, bp.str, 0);
+    av_bprint_finalize(&bp, NULL);
+}
+
+static void writer_print_data_hash(WriterContext *wctx, const char *name,
+                                   uint8_t *data, int size)
+{
+    char *p, buf[AV_HASH_MAX_SIZE * 2 + 64] = { 0 };
+
+    if (!hash)
+        return;
+    av_hash_init(hash);
+    av_hash_update(hash, data, size);
+    snprintf(buf, sizeof(buf), "%s:", av_hash_get_name(hash));
+    p = buf + strlen(buf);
+    av_hash_final_hex(hash, p, buf + sizeof(buf) - p);
+    writer_print_string(wctx, name, buf, 0);
+}
+
+static void writer_print_integers(WriterContext *wctx, const char *name,
+                                  uint8_t *data, int size, const char *format,
+                                  int columns, int bytes, int offset_add)
+{
+    AVBPrint bp;
+    int offset = 0, l, i;
+
+    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
+    av_bprintf(&bp, "\n");
+    while (size) {
+        av_bprintf(&bp, "%08x: ", offset);
+        l = FFMIN(size, columns);
+        for (i = 0; i < l; i++) {
+            if      (bytes == 1) av_bprintf(&bp, format, *data);
+            else if (bytes == 2) av_bprintf(&bp, format, AV_RN16(data));
+            else if (bytes == 4) av_bprintf(&bp, format, AV_RN32(data));
+            data += bytes;
+            size --;
+        }
+        av_bprintf(&bp, "\n");
+        offset += offset_add;
+    }
+    writer_print_string(wctx, name, bp.str, 0);
+    av_bprint_finalize(&bp, NULL);
+}
+
+#define MAX_REGISTERED_WRITERS_NB 64
+
+static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
+
+static int writer_register(const Writer *writer)
+{
+    static int next_registered_writer_idx = 0;
+
+    if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
+        return AVERROR(ENOMEM);
+
+    registered_writers[next_registered_writer_idx++] = writer;
+    return 0;
+}
+
+static const Writer *writer_get_by_name(const char *name)
+{
+    int i;
+
+    for (i = 0; registered_writers[i]; i++)
+        if (!strcmp(registered_writers[i]->name, name))
+            return registered_writers[i];
+
+    return NULL;
+}
+
+
+/* WRITERS */
+
+#define DEFINE_WRITER_CLASS(name)                   \
+static const char *name##_get_name(void *ctx)       \
+{                                                   \
+    return #name ;                                  \
+}                                                   \
+static const AVClass name##_class = {               \
+    .class_name = #name,                            \
+    .item_name  = name##_get_name,                  \
+    .option     = name##_options                    \
+}
+
+/* Default output */
+
+typedef struct DefaultContext {
+    const AVClass *class;
+    int nokey;
+    int noprint_wrappers;
+    int nested_section[SECTION_MAX_NB_LEVELS];
+} DefaultContext;
+
+#undef OFFSET
+#define OFFSET(x) offsetof(DefaultContext, x)
+
+static const AVOption default_options[] = {
+    { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
+    { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
+    { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
+    { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
+    {NULL},
+};
+
+DEFINE_WRITER_CLASS(default);
+
+/* lame uppercasing routine, assumes the string is lower case ASCII */
+static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
+{
+    int i;
+    for (i = 0; src[i] && i < dst_size-1; i++)
+        dst[i] = av_toupper(src[i]);
+    dst[i] = 0;
+    return dst;
+}
+
+static void default_print_section_header(WriterContext *wctx)
+{
+    DefaultContext *def = wctx->priv;
+    char buf[32];
+    const struct section *section = wctx->section[wctx->level];
+    const struct section *parent_section = wctx->level ?
+        wctx->section[wctx->level-1] : NULL;
+
+    av_bprint_clear(&wctx->section_pbuf[wctx->level]);
+    if (parent_section &&
+        !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
+        def->nested_section[wctx->level] = 1;
+        av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
+                   wctx->section_pbuf[wctx->level-1].str,
+                   upcase_string(buf, sizeof(buf),
+                                 av_x_if_null(section->element_name, section->name)));
+    }
+
+    if (def->noprint_wrappers || def->nested_section[wctx->level])
+        return;
+
+    if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
+        printf("[%s]\n", upcase_string(buf, sizeof(buf), section->name));
+}
+
+static void default_print_section_footer(WriterContext *wctx)
+{
+    DefaultContext *def = wctx->priv;
+    const struct section *section = wctx->section[wctx->level];
+    char buf[32];
+
+    if (def->noprint_wrappers || def->nested_section[wctx->level])
+        return;
+
+    if (!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
+        printf("[/%s]\n", upcase_string(buf, sizeof(buf), section->name));
+}
+
+static void default_print_str(WriterContext *wctx, const char *key, const char *value)
+{
+    DefaultContext *def = wctx->priv;
+
+    if (!def->nokey)
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
+    printf("%s\n", value);
+}
+
+static void default_print_int(WriterContext *wctx, const char *key, long long int value)
+{
+    DefaultContext *def = wctx->priv;
+
+    if (!def->nokey)
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
+    printf("%lld\n", value);
+}
+
+static const Writer default_writer = {
+    .name                  = "default",
+    .priv_size             = sizeof(DefaultContext),
+    .print_section_header  = default_print_section_header,
+    .print_section_footer  = default_print_section_footer,
+    .print_integer         = default_print_int,
+    .print_string          = default_print_str,
+    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
+    .priv_class            = &default_class,
+};
+
+/* Compact output */
+
+/**
+ * Apply C-language-like string escaping.
+ */
+static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
+{
+    const char *p;
+
+    for (p = src; *p; p++) {
+        switch (*p) {
+        case '\b': av_bprintf(dst, "%s", "\\b");  break;
+        case '\f': av_bprintf(dst, "%s", "\\f");  break;
+        case '\n': av_bprintf(dst, "%s", "\\n");  break;
+        case '\r': av_bprintf(dst, "%s", "\\r");  break;
+        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
+        default:
+            if (*p == sep)
+                av_bprint_chars(dst, '\\', 1);
+            av_bprint_chars(dst, *p, 1);
+        }
+    }
+    return dst->str;
+}
+
+/**
+ * Quote fields containing special characters, check RFC4180.
+ */
+static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
+{
+    char meta_chars[] = { sep, '"', '\n', '\r', '\0' };
+    int needs_quoting = !!src[strcspn(src, meta_chars)];
+
+    if (needs_quoting)
+        av_bprint_chars(dst, '"', 1);
+
+    for (; *src; src++) {
+        if (*src == '"')
+            av_bprint_chars(dst, '"', 1);
+        av_bprint_chars(dst, *src, 1);
+    }
+    if (needs_quoting)
+        av_bprint_chars(dst, '"', 1);
+    return dst->str;
+}
+
+static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
+{
+    return src;
+}
+
+typedef struct CompactContext {
+    const AVClass *class;
+    char *item_sep_str;
+    char item_sep;
+    int nokey;
+    int print_section;
+    char *escape_mode_str;
+    const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
+    int nested_section[SECTION_MAX_NB_LEVELS];
+    int has_nested_elems[SECTION_MAX_NB_LEVELS];
+    int terminate_line[SECTION_MAX_NB_LEVELS];
+} CompactContext;
+
+#undef OFFSET
+#define OFFSET(x) offsetof(CompactContext, x)
+
+static const AVOption compact_options[]= {
+    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
+    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
+    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
+    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=0},    0,        1        },
+    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
+    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
+    {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
+    {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
+    {NULL},
+};
+
+DEFINE_WRITER_CLASS(compact);
+
+static av_cold int compact_init(WriterContext *wctx)
+{
+    CompactContext *compact = wctx->priv;
+
+    if (strlen(compact->item_sep_str) != 1) {
+        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
+               compact->item_sep_str);
+        return AVERROR(EINVAL);
+    }
+    compact->item_sep = compact->item_sep_str[0];
+
+    if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
+    else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
+    else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
+    else {
+        av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
+        return AVERROR(EINVAL);
+    }
+
+    return 0;
+}
+
+static void compact_print_section_header(WriterContext *wctx)
+{
+    CompactContext *compact = wctx->priv;
+    const struct section *section = wctx->section[wctx->level];
+    const struct section *parent_section = wctx->level ?
+        wctx->section[wctx->level-1] : NULL;
+    compact->terminate_line[wctx->level] = 1;
+    compact->has_nested_elems[wctx->level] = 0;
+
+    av_bprint_clear(&wctx->section_pbuf[wctx->level]);
+    if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
+        !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
+        compact->nested_section[wctx->level] = 1;
+        compact->has_nested_elems[wctx->level-1] = 1;
+        av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
+                   wctx->section_pbuf[wctx->level-1].str,
+                   (char *)av_x_if_null(section->element_name, section->name));
+        wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
+    } else {
+        if (parent_section && compact->has_nested_elems[wctx->level-1] &&
+            (section->flags & SECTION_FLAG_IS_ARRAY)) {
+            compact->terminate_line[wctx->level-1] = 0;
+            printf("\n");
+        }
+        if (compact->print_section &&
+            !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
+            printf("%s%c", section->name, compact->item_sep);
+    }
+}
+
+static void compact_print_section_footer(WriterContext *wctx)
+{
+    CompactContext *compact = wctx->priv;
+
+    if (!compact->nested_section[wctx->level] &&
+        compact->terminate_line[wctx->level] &&
+        !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
+        printf("\n");
+}
+
+static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
+{
+    CompactContext *compact = wctx->priv;
+    AVBPrint buf;
+
+    if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
+    if (!compact->nokey)
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
+    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
+    av_bprint_finalize(&buf, NULL);
+}
+
+static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
+{
+    CompactContext *compact = wctx->priv;
+
+    if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
+    if (!compact->nokey)
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
+    printf("%lld", value);
+}
+
+static const Writer compact_writer = {
+    .name                 = "compact",
+    .priv_size            = sizeof(CompactContext),
+    .init                 = compact_init,
+    .print_section_header = compact_print_section_header,
+    .print_section_footer = compact_print_section_footer,
+    .print_integer        = compact_print_int,
+    .print_string         = compact_print_str,
+    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
+    .priv_class           = &compact_class,
+};
+
+/* CSV output */
+
+#undef OFFSET
+#define OFFSET(x) offsetof(CompactContext, x)
+
+static const AVOption csv_options[] = {
+    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
+    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str=","},  CHAR_MIN, CHAR_MAX },
+    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
+    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
+    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
+    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="csv"}, CHAR_MIN, CHAR_MAX },
+    {"print_section", "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
+    {"p",             "print section name", OFFSET(print_section), AV_OPT_TYPE_BOOL,   {.i64=1},    0,        1        },
+    {NULL},
+};
+
+DEFINE_WRITER_CLASS(csv);
+
+static const Writer csv_writer = {
+    .name                 = "csv",
+    .priv_size            = sizeof(CompactContext),
+    .init                 = compact_init,
+    .print_section_header = compact_print_section_header,
+    .print_section_footer = compact_print_section_footer,
+    .print_integer        = compact_print_int,
+    .print_string         = compact_print_str,
+    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
+    .priv_class           = &csv_class,
+};
+
+/* Flat output */
+
+typedef struct FlatContext {
+    const AVClass *class;
+    const char *sep_str;
+    char sep;
+    int hierarchical;
+} FlatContext;
+
+#undef OFFSET
+#define OFFSET(x) offsetof(FlatContext, x)
+
+static const AVOption flat_options[]= {
+    {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
+    {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
+    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
+    {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
+    {NULL},
+};
+
+DEFINE_WRITER_CLASS(flat);
+
+static av_cold int flat_init(WriterContext *wctx)
+{
+    FlatContext *flat = wctx->priv;
+
+    if (strlen(flat->sep_str) != 1) {
+        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
+               flat->sep_str);
+        return AVERROR(EINVAL);
+    }
+    flat->sep = flat->sep_str[0];
+
+    return 0;
+}
+
+static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
+{
+    const char *p;
+
+    for (p = src; *p; p++) {
+        if (!((*p >= '0' && *p <= '9') ||
+              (*p >= 'a' && *p <= 'z') ||
+              (*p >= 'A' && *p <= 'Z')))
+            av_bprint_chars(dst, '_', 1);
+        else
+            av_bprint_chars(dst, *p, 1);
+    }
+    return dst->str;
+}
+
+static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
+{
+    const char *p;
+
+    for (p = src; *p; p++) {
+        switch (*p) {
+        case '\n': av_bprintf(dst, "%s", "\\n");  break;
+        case '\r': av_bprintf(dst, "%s", "\\r");  break;
+        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
+        case '"':  av_bprintf(dst, "%s", "\\\""); break;
+        case '`':  av_bprintf(dst, "%s", "\\`");  break;
+        case '$':  av_bprintf(dst, "%s", "\\$");  break;
+        default:   av_bprint_chars(dst, *p, 1);   break;
+        }
+    }
+    return dst->str;
+}
+
+static void flat_print_section_header(WriterContext *wctx)
+{
+    FlatContext *flat = wctx->priv;
+    AVBPrint *buf = &wctx->section_pbuf[wctx->level];
+    const struct section *section = wctx->section[wctx->level];
+    const struct section *parent_section = wctx->level ?
+        wctx->section[wctx->level-1] : NULL;
+
+    /* build section header */
+    av_bprint_clear(buf);
+    if (!parent_section)
+        return;
+    av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
+
+    if (flat->hierarchical ||
+        !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
+        av_bprintf(buf, "%s%s", wctx->section[wctx->level]->name, flat->sep_str);
+
+        if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
+            int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
+                wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
+            av_bprintf(buf, "%d%s", n, flat->sep_str);
+        }
+    }
+}
+
+static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
+{
+    printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
+}
+
+static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
+{
+    FlatContext *flat = wctx->priv;
+    AVBPrint buf;
+
+    printf("%s", wctx->section_pbuf[wctx->level].str);
+    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
+    av_bprint_clear(&buf);
+    printf("\"%s\"\n", flat_escape_value_str(&buf, value));
+    av_bprint_finalize(&buf, NULL);
+}
+
+static const Writer flat_writer = {
+    .name                  = "flat",
+    .priv_size             = sizeof(FlatContext),
+    .init                  = flat_init,
+    .print_section_header  = flat_print_section_header,
+    .print_integer         = flat_print_int,
+    .print_string          = flat_print_str,
+    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
+    .priv_class            = &flat_class,
+};
+
+/* INI format output */
+
+typedef struct INIContext {
+    const AVClass *class;
+    int hierarchical;
+} INIContext;
+
+#undef OFFSET
+#define OFFSET(x) offsetof(INIContext, x)
+
+static const AVOption ini_options[] = {
+    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
+    {"h",            "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
+    {NULL},
+};
+
+DEFINE_WRITER_CLASS(ini);
+
+static char *ini_escape_str(AVBPrint *dst, const char *src)
+{
+    int i = 0;
+    char c = 0;
+
+    while (c = src[i++]) {
+        switch (c) {
+        case '\b': av_bprintf(dst, "%s", "\\b"); break;
+        case '\f': av_bprintf(dst, "%s", "\\f"); break;
+        case '\n': av_bprintf(dst, "%s", "\\n"); break;
+        case '\r': av_bprintf(dst, "%s", "\\r"); break;
+        case '\t': av_bprintf(dst, "%s", "\\t"); break;
+        case '\\':
+        case '#' :
+        case '=' :
+        case ':' : av_bprint_chars(dst, '\\', 1);
+        default:
+            if ((unsigned char)c < 32)
+                av_bprintf(dst, "\\x00%02x", c & 0xff);
+            else
+                av_bprint_chars(dst, c, 1);
+            break;
+        }
+    }
+    return dst->str;
+}
+
+static void ini_print_section_header(WriterContext *wctx)
+{
+    INIContext *ini = wctx->priv;
+    AVBPrint *buf = &wctx->section_pbuf[wctx->level];
+    const struct section *section = wctx->section[wctx->level];
+    const struct section *parent_section = wctx->level ?
+        wctx->section[wctx->level-1] : NULL;
+
+    av_bprint_clear(buf);
+    if (!parent_section) {
+        printf("# ffprobe output\n\n");
+        return;
+    }
+
+    if (wctx->nb_item[wctx->level-1])
+        printf("\n");
+
+    av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
+    if (ini->hierarchical ||
+        !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
+        av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
+
+        if (parent_section->flags & SECTION_FLAG_IS_ARRAY) {
+            int n = parent_section->id == SECTION_ID_PACKETS_AND_FRAMES ?
+                wctx->nb_section_packet_frame : wctx->nb_item[wctx->level-1];
+            av_bprintf(buf, ".%d", n);
+        }
+    }
+
+    if (!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER)))
+        printf("[%s]\n", buf->str);
+}
+
+static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
+{
+    AVBPrint buf;
+
+    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    printf("%s=", ini_escape_str(&buf, key));
+    av_bprint_clear(&buf);
+    printf("%s\n", ini_escape_str(&buf, value));
+    av_bprint_finalize(&buf, NULL);
+}
+
+static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
+{
+    printf("%s=%lld\n", key, value);
+}
+
+static const Writer ini_writer = {
+    .name                  = "ini",
+    .priv_size             = sizeof(INIContext),
+    .print_section_header  = ini_print_section_header,
+    .print_integer         = ini_print_int,
+    .print_string          = ini_print_str,
+    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
+    .priv_class            = &ini_class,
+};
+
+/* JSON output */
+
+typedef struct JSONContext {
+    const AVClass *class;
+    int indent_level;
+    int compact;
+    const char *item_sep, *item_start_end;
+} JSONContext;
+
+#undef OFFSET
+#define OFFSET(x) offsetof(JSONContext, x)
+
+static const AVOption json_options[]= {
+    { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
+    { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 },
+    { NULL }
+};
+
+DEFINE_WRITER_CLASS(json);
+
+static av_cold int json_init(WriterContext *wctx)
+{
+    JSONContext *json = wctx->priv;
+
+    json->item_sep       = json->compact ? ", " : ",\n";
+    json->item_start_end = json->compact ? " "  : "\n";
+
+    return 0;
+}
+
+static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
+{
+    static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
+    static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};
+    const char *p;
+
+    for (p = src; *p; p++) {
+        char *s = strchr(json_escape, *p);
+        if (s) {
+            av_bprint_chars(dst, '\\', 1);
+            av_bprint_chars(dst, json_subst[s - json_escape], 1);
+        } else if ((unsigned char)*p < 32) {
+            av_bprintf(dst, "\\u00%02x", *p & 0xff);
+        } else {
+            av_bprint_chars(dst, *p, 1);
+        }
+    }
+    return dst->str;
+}
+
+#define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
+
+static void json_print_section_header(WriterContext *wctx)
+{
+    JSONContext *json = wctx->priv;
+    AVBPrint buf;
+    const struct section *section = wctx->section[wctx->level];
+    const struct section *parent_section = wctx->level ?
+        wctx->section[wctx->level-1] : NULL;
+
+    if (wctx->level && wctx->nb_item[wctx->level-1])
+        printf(",\n");
+
+    if (section->flags & SECTION_FLAG_IS_WRAPPER) {
+        printf("{\n");
+        json->indent_level++;
+    } else {
+        av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+        json_escape_str(&buf, section->name, wctx);
+        JSON_INDENT();
+
+        json->indent_level++;
+        if (section->flags & SECTION_FLAG_IS_ARRAY) {
+            printf("\"%s\": [\n", buf.str);
+        } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
+            printf("\"%s\": {%s", buf.str, json->item_start_end);
+        } else {
+            printf("{%s", json->item_start_end);
+
+            /* this is required so the parser can distinguish between packets and frames */
+            if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
+                if (!json->compact)
+                    JSON_INDENT();
+                printf("\"type\": \"%s\"%s", section->name, json->item_sep);
+            }
+        }
+        av_bprint_finalize(&buf, NULL);
+    }
+}
+
+static void json_print_section_footer(WriterContext *wctx)
+{
+    JSONContext *json = wctx->priv;
+    const struct section *section = wctx->section[wctx->level];
+
+    if (wctx->level == 0) {
+        json->indent_level--;
+        printf("\n}\n");
+    } else if (section->flags & SECTION_FLAG_IS_ARRAY) {
+        printf("\n");
+        json->indent_level--;
+        JSON_INDENT();
+        printf("]");
+    } else {
+        printf("%s", json->item_start_end);
+        json->indent_level--;
+        if (!json->compact)
+            JSON_INDENT();
+        printf("}");
+    }
+}
+
+static inline void json_print_item_str(WriterContext *wctx,
+                                       const char *key, const char *value)
+{
+    AVBPrint buf;
+
+    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    printf("\"%s\":", json_escape_str(&buf, key,   wctx));
+    av_bprint_clear(&buf);
+    printf(" \"%s\"", json_escape_str(&buf, value, wctx));
+    av_bprint_finalize(&buf, NULL);
+}
+
+static void json_print_str(WriterContext *wctx, const char *key, const char *value)
+{
+    JSONContext *json = wctx->priv;
+
+    if (wctx->nb_item[wctx->level])
+        printf("%s", json->item_sep);
+    if (!json->compact)
+        JSON_INDENT();
+    json_print_item_str(wctx, key, value);
+}
+
+static void json_print_int(WriterContext *wctx, const char *key, long long int value)
+{
+    JSONContext *json = wctx->priv;
+    AVBPrint buf;
+
+    if (wctx->nb_item[wctx->level])
+        printf("%s", json->item_sep);
+    if (!json->compact)
+        JSON_INDENT();
+
+    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
+    av_bprint_finalize(&buf, NULL);
+}
+
+static const Writer json_writer = {
+    .name                 = "json",
+    .priv_size            = sizeof(JSONContext),
+    .init                 = json_init,
+    .print_section_header = json_print_section_header,
+    .print_section_footer = json_print_section_footer,
+    .print_integer        = json_print_int,
+    .print_string         = json_print_str,
+    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
+    .priv_class           = &json_class,
+};
+
+/* XML output */
+
+typedef struct XMLContext {
+    const AVClass *class;
+    int within_tag;
+    int indent_level;
+    int fully_qualified;
+    int xsd_strict;
+} XMLContext;
+
+#undef OFFSET
+#define OFFSET(x) offsetof(XMLContext, x)
+
+static const AVOption xml_options[] = {
+    {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
+    {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
+    {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
+    {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_BOOL, {.i64=0},  0, 1 },
+    {NULL},
+};
+
+DEFINE_WRITER_CLASS(xml);
+
+static av_cold int xml_init(WriterContext *wctx)
+{
+    XMLContext *xml = wctx->priv;
+
+    if (xml->xsd_strict) {
+        xml->fully_qualified = 1;
+#define CHECK_COMPLIANCE(opt, opt_name)                                 \
+        if (opt) {                                                      \
+            av_log(wctx, AV_LOG_ERROR,                                  \
+                   "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
+                   "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
+            return AVERROR(EINVAL);                                     \
+        }
+        CHECK_COMPLIANCE(show_private_data, "private");
+        CHECK_COMPLIANCE(show_value_unit,   "unit");
+        CHECK_COMPLIANCE(use_value_prefix,  "prefix");
+
+        if (do_show_frames && do_show_packets) {
+            av_log(wctx, AV_LOG_ERROR,
+                   "Interleaved frames and packets are not allowed in XSD. "
+                   "Select only one between the -show_frames and the -show_packets options.\n");
+            return AVERROR(EINVAL);
+        }
+    }
+
+    return 0;
+}
+
+static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
+{
+    const char *p;
+
+    for (p = src; *p; p++) {
+        switch (*p) {
+        case '&' : av_bprintf(dst, "%s", "&amp;");  break;
+        case '<' : av_bprintf(dst, "%s", "&lt;");   break;
+        case '>' : av_bprintf(dst, "%s", "&gt;");   break;
+        case '"' : av_bprintf(dst, "%s", "&quot;"); break;
+        case '\'': av_bprintf(dst, "%s", "&apos;"); break;
+        default: av_bprint_chars(dst, *p, 1);
+        }
+    }
+
+    return dst->str;
+}
+
+#define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
+
+static void xml_print_section_header(WriterContext *wctx)
+{
+    XMLContext *xml = wctx->priv;
+    const struct section *section = wctx->section[wctx->level];
+    const struct section *parent_section = wctx->level ?
+        wctx->section[wctx->level-1] : NULL;
+
+    if (wctx->level == 0) {
+        const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
+            "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
+            "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
+
+        printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+        printf("<%sffprobe%s>\n",
+               xml->fully_qualified ? "ffprobe:" : "",
+               xml->fully_qualified ? qual : "");
+        return;
+    }
+
+    if (xml->within_tag) {
+        xml->within_tag = 0;
+        printf(">\n");
+    }
+    if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
+        xml->indent_level++;
+    } else {
+        if (parent_section && (parent_section->flags & SECTION_FLAG_IS_WRAPPER) &&
+            wctx->level && wctx->nb_item[wctx->level-1])
+            printf("\n");
+        xml->indent_level++;
+
+        if (section->flags & SECTION_FLAG_IS_ARRAY) {
+            XML_INDENT(); printf("<%s>\n", section->name);
+        } else {
+            XML_INDENT(); printf("<%s ", section->name);
+            xml->within_tag = 1;
+        }
+    }
+}
+
+static void xml_print_section_footer(WriterContext *wctx)
+{
+    XMLContext *xml = wctx->priv;
+    const struct section *section = wctx->section[wctx->level];
+
+    if (wctx->level == 0) {
+        printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
+    } else if (xml->within_tag) {
+        xml->within_tag = 0;
+        printf("/>\n");
+        xml->indent_level--;
+    } else if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
+        xml->indent_level--;
+    } else {
+        XML_INDENT(); printf("</%s>\n", section->name);
+        xml->indent_level--;
+    }
+}
+
+static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
+{
+    AVBPrint buf;
+    XMLContext *xml = wctx->priv;
+    const struct section *section = wctx->section[wctx->level];
+
+    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    if (section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS) {
+        XML_INDENT();
+        printf("<%s key=\"%s\"",
+               section->element_name, xml_escape_str(&buf, key, wctx));
+        av_bprint_clear(&buf);
+        printf(" value=\"%s\"/>\n", xml_escape_str(&buf, value, wctx));
+    } else {
+        if (wctx->nb_item[wctx->level])
+            printf(" ");
+        printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
+    }
+
+    av_bprint_finalize(&buf, NULL);
+}
+
+static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
+{
+    if (wctx->nb_item[wctx->level])
+        printf(" ");
+    printf("%s=\"%lld\"", key, value);
+}
+
+static Writer xml_writer = {
+    .name                 = "xml",
+    .priv_size            = sizeof(XMLContext),
+    .init                 = xml_init,
+    .print_section_header = xml_print_section_header,
+    .print_section_footer = xml_print_section_footer,
+    .print_integer        = xml_print_int,
+    .print_string         = xml_print_str,
+    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
+    .priv_class           = &xml_class,
+};
+
+static void writer_register_all(void)
+{
+    static int initialized;
+
+    if (initialized)
+        return;
+    initialized = 1;
+
+    writer_register(&default_writer);
+    writer_register(&compact_writer);
+    writer_register(&csv_writer);
+    writer_register(&flat_writer);
+    writer_register(&ini_writer);
+    writer_register(&json_writer);
+    writer_register(&xml_writer);
+}
+
+#define print_fmt(k, f, ...) do {              \
+    av_bprint_clear(&pbuf);                    \
+    av_bprintf(&pbuf, f, __VA_ARGS__);         \
+    writer_print_string(w, k, pbuf.str, 0);    \
+} while (0)
+
+#define print_int(k, v)         writer_print_integer(w, k, v)
+#define print_q(k, v, s)        writer_print_rational(w, k, v, s)
+#define print_str(k, v)         writer_print_string(w, k, v, 0)
+#define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)
+#define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
+#define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
+#define print_ts(k, v)          writer_print_ts(w, k, v, 0)
+#define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
+#define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)
+#define print_val(k, v, u) do {                                     \
+    struct unit_value uv;                                           \
+    uv.val.i = v;                                                   \
+    uv.unit = u;                                                    \
+    writer_print_string(w, k, value_string(val_str, sizeof(val_str), uv), 0); \
+} while (0)
+
+#define print_section_header(s) writer_print_section_header(w, s)
+#define print_section_footer(s) writer_print_section_footer(w, s)
+
+#define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \
+{                                                                       \
+    ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \
+    if (ret < 0)                                                        \
+        goto end;                                                       \
+    memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \
+}
+
+static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)
+{
+    AVDictionaryEntry *tag = NULL;
+    int ret = 0;
+
+    if (!tags)
+        return 0;
+    writer_print_section_header(w, section_id);
+
+    while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+        if ((ret = print_str_validate(tag->key, tag->value)) < 0)
+            break;
+    }
+    writer_print_section_footer(w);
+
+    return ret;
+}
+
+static void print_pkt_side_data(WriterContext *w,
+                                AVCodecParameters *par,
+                                const AVPacketSideData *side_data,
+                                int nb_side_data,
+                                SectionID id_data_list,
+                                SectionID id_data)
+{
+    int i;
+
+    writer_print_section_header(w, id_data_list);
+    for (i = 0; i < nb_side_data; i++) {
+        const AVPacketSideData *sd = &side_data[i];
+        const char *name = av_packet_side_data_name(sd->type);
+
+        writer_print_section_header(w, id_data);
+        print_str("side_data_type", name ? name : "unknown");
+        if (sd->type == AV_PKT_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
+            writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
+            print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
+        } else if (sd->type == AV_PKT_DATA_STEREO3D) {
+            const AVStereo3D *stereo = (AVStereo3D *)sd->data;
+            print_str("type", av_stereo3d_type_name(stereo->type));
+            print_int("inverted", !!(stereo->flags & AV_STEREO3D_FLAG_INVERT));
+        } else if (sd->type == AV_PKT_DATA_SPHERICAL) {
+            const AVSphericalMapping *spherical = (AVSphericalMapping *)sd->data;
+            print_str("projection", av_spherical_projection_name(spherical->projection));
+            if (spherical->projection == AV_SPHERICAL_CUBEMAP) {
+                print_int("padding", spherical->padding);
+            } else if (spherical->projection == AV_SPHERICAL_EQUIRECTANGULAR_TILE) {
+                size_t l, t, r, b;
+                av_spherical_tile_bounds(spherical, par->width, par->height,
+                                         &l, &t, &r, &b);
+                print_int("bound_left", l);
+                print_int("bound_top", t);
+                print_int("bound_right", r);
+                print_int("bound_bottom", b);
+            }
+
+            print_int("yaw", (double) spherical->yaw / (1 << 16));
+            print_int("pitch", (double) spherical->pitch / (1 << 16));
+            print_int("roll", (double) spherical->roll / (1 << 16));
+        } else if (sd->type == AV_PKT_DATA_SKIP_SAMPLES && sd->size == 10) {
+            print_int("skip_samples",    AV_RL32(sd->data));
+            print_int("discard_padding", AV_RL32(sd->data + 4));
+            print_int("skip_reason",     AV_RL8(sd->data + 8));
+            print_int("discard_reason",  AV_RL8(sd->data + 9));
+        } else if (sd->type == AV_PKT_DATA_MASTERING_DISPLAY_METADATA) {
+            AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)sd->data;
+
+            if (metadata->has_primaries) {
+                print_q("red_x", metadata->display_primaries[0][0], '/');
+                print_q("red_y", metadata->display_primaries[0][1], '/');
+                print_q("green_x", metadata->display_primaries[1][0], '/');
+                print_q("green_y", metadata->display_primaries[1][1], '/');
+                print_q("blue_x", metadata->display_primaries[2][0], '/');
+                print_q("blue_y", metadata->display_primaries[2][1], '/');
+
+                print_q("white_point_x", metadata->white_point[0], '/');
+                print_q("white_point_y", metadata->white_point[1], '/');
+            }
+
+            if (metadata->has_luminance) {
+                print_q("min_luminance", metadata->min_luminance, '/');
+                print_q("max_luminance", metadata->max_luminance, '/');
+            }
+        } else if (sd->type == AV_PKT_DATA_CONTENT_LIGHT_LEVEL) {
+            AVContentLightMetadata *metadata = (AVContentLightMetadata *)sd->data;
+            print_int("max_content", metadata->MaxCLL);
+            print_int("max_average", metadata->MaxFALL);
+        }
+        writer_print_section_footer(w);
+    }
+    writer_print_section_footer(w);
+}
+
+static void print_color_range(WriterContext *w, enum AVColorRange color_range)
+{
+    const char *val = av_color_range_name(color_range);
+    if (!val || color_range == AVCOL_RANGE_UNSPECIFIED) {
+        print_str_opt("color_range", "unknown");
+    } else {
+        print_str("color_range", val);
+    }
+}
+
+static void print_color_space(WriterContext *w, enum AVColorSpace color_space)
+{
+    const char *val = av_color_space_name(color_space);
+    if (!val || color_space == AVCOL_SPC_UNSPECIFIED) {
+        print_str_opt("color_space", "unknown");
+    } else {
+        print_str("color_space", val);
+    }
+}
+
+static void print_primaries(WriterContext *w, enum AVColorPrimaries color_primaries)
+{
+    const char *val = av_color_primaries_name(color_primaries);
+    if (!val || color_primaries == AVCOL_PRI_UNSPECIFIED) {
+        print_str_opt("color_primaries", "unknown");
+    } else {
+        print_str("color_primaries", val);
+    }
+}
+
+static void print_color_trc(WriterContext *w, enum AVColorTransferCharacteristic color_trc)
+{
+    const char *val = av_color_transfer_name(color_trc);
+    if (!val || color_trc == AVCOL_TRC_UNSPECIFIED) {
+        print_str_opt("color_transfer", "unknown");
+    } else {
+        print_str("color_transfer", val);
+    }
+}
+
+static void print_chroma_location(WriterContext *w, enum AVChromaLocation chroma_location)
+{
+    const char *val = av_chroma_location_name(chroma_location);
+    if (!val || chroma_location == AVCHROMA_LOC_UNSPECIFIED) {
+        print_str_opt("chroma_location", "unspecified");
+    } else {
+        print_str("chroma_location", val);
+    }
+}
+
+
+static void clear_log(int need_lock)
+{
+    int i;
+
+    if (need_lock)
+        pthread_mutex_lock(&log_mutex);
+    for (i=0; i<log_buffer_size; i++) {
+        av_freep(&log_buffer[i].context_name);
+        av_freep(&log_buffer[i].parent_name);
+        av_freep(&log_buffer[i].log_message);
+    }
+    log_buffer_size = 0;
+    if(need_lock)
+        pthread_mutex_unlock(&log_mutex);
+}
+
+static int show_log(WriterContext *w, int section_ids, int section_id, int log_level)
+{
+    int i;
+    pthread_mutex_lock(&log_mutex);
+    if (!log_buffer_size) {
+        pthread_mutex_unlock(&log_mutex);
+        return 0;
+    }
+    writer_print_section_header(w, section_ids);
+
+    for (i=0; i<log_buffer_size; i++) {
+        if (log_buffer[i].log_level <= log_level) {
+            writer_print_section_header(w, section_id);
+            print_str("context", log_buffer[i].context_name);
+            print_int("level", log_buffer[i].log_level);
+            print_int("category", log_buffer[i].category);
+            if (log_buffer[i].parent_name) {
+                print_str("parent_context", log_buffer[i].parent_name);
+                print_int("parent_category", log_buffer[i].parent_category);
+            } else {
+                print_str_opt("parent_context", "N/A");
+                print_str_opt("parent_category", "N/A");
+            }
+            print_str("message", log_buffer[i].log_message);
+            writer_print_section_footer(w);
+        }
+    }
+    clear_log(0);
+    pthread_mutex_unlock(&log_mutex);
+
+    writer_print_section_footer(w);
+
+    return 0;
+}
+
+static void show_packet(WriterContext *w, InputFile *ifile, AVPacket *pkt, int packet_idx)
+{
+    char val_str[128];
+    AVStream *st = ifile->streams[pkt->stream_index].st;
+    AVBPrint pbuf;
+    const char *s;
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    writer_print_section_header(w, SECTION_ID_PACKET);
+
+    s = av_get_media_type_string(st->codecpar->codec_type);
+    if (s) print_str    ("codec_type", s);
+    else   print_str_opt("codec_type", "unknown");
+    print_int("stream_index",     pkt->stream_index);
+    print_ts  ("pts",             pkt->pts);
+    print_time("pts_time",        pkt->pts, &st->time_base);
+    print_ts  ("dts",             pkt->dts);
+    print_time("dts_time",        pkt->dts, &st->time_base);
+    print_duration_ts("duration",        pkt->duration);
+    print_duration_time("duration_time", pkt->duration, &st->time_base);
+    print_duration_ts("convergence_duration", pkt->convergence_duration);
+    print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
+    print_val("size",             pkt->size, unit_byte_str);
+    if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);
+    else                print_str_opt("pos", "N/A");
+    print_fmt("flags", "%c%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_',
+              pkt->flags & AV_PKT_FLAG_DISCARD ? 'D' : '_');
+
+    if (pkt->side_data_elems) {
+        int size;
+        const uint8_t *side_metadata;
+
+        side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
+        if (side_metadata && size && do_show_packet_tags) {
+            AVDictionary *dict = NULL;
+            if (av_packet_unpack_dictionary(side_metadata, size, &dict) >= 0)
+                show_tags(w, dict, SECTION_ID_PACKET_TAGS);
+            av_dict_free(&dict);
+        }
+
+        print_pkt_side_data(w, st->codecpar, pkt->side_data, pkt->side_data_elems,
+                            SECTION_ID_PACKET_SIDE_DATA_LIST,
+                            SECTION_ID_PACKET_SIDE_DATA);
+    }
+
+    if (do_show_data)
+        writer_print_data(w, "data", pkt->data, pkt->size);
+    writer_print_data_hash(w, "data_hash", pkt->data, pkt->size);
+    writer_print_section_footer(w);
+
+    av_bprint_finalize(&pbuf, NULL);
+    fflush(stdout);
+}
+
+static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
+                          AVFormatContext *fmt_ctx)
+{
+    AVBPrint pbuf;
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    writer_print_section_header(w, SECTION_ID_SUBTITLE);
+
+    print_str ("media_type",         "subtitle");
+    print_ts  ("pts",                 sub->pts);
+    print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);
+    print_int ("format",              sub->format);
+    print_int ("start_display_time",  sub->start_display_time);
+    print_int ("end_display_time",    sub->end_display_time);
+    print_int ("num_rects",           sub->num_rects);
+
+    writer_print_section_footer(w);
+
+    av_bprint_finalize(&pbuf, NULL);
+    fflush(stdout);
+}
+
+static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
+                       AVFormatContext *fmt_ctx)
+{
+    AVBPrint pbuf;
+    char val_str[128];
+    const char *s;
+    int i;
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    writer_print_section_header(w, SECTION_ID_FRAME);
+
+    s = av_get_media_type_string(stream->codecpar->codec_type);
+    if (s) print_str    ("media_type", s);
+    else   print_str_opt("media_type", "unknown");
+    print_int("stream_index",           stream->index);
+    print_int("key_frame",              frame->key_frame);
+    print_ts  ("pkt_pts",               frame->pts);
+    print_time("pkt_pts_time",          frame->pts, &stream->time_base);
+    print_ts  ("pkt_dts",               frame->pkt_dts);
+    print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
+    print_ts  ("best_effort_timestamp", frame->best_effort_timestamp);
+    print_time("best_effort_timestamp_time", frame->best_effort_timestamp, &stream->time_base);
+    print_duration_ts  ("pkt_duration",      frame->pkt_duration);
+    print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
+    if (frame->pkt_pos != -1) print_fmt    ("pkt_pos", "%"PRId64, frame->pkt_pos);
+    else                      print_str_opt("pkt_pos", "N/A");
+    if (frame->pkt_size != -1) print_val    ("pkt_size", frame->pkt_size, unit_byte_str);
+    else                       print_str_opt("pkt_size", "N/A");
+
+    switch (stream->codecpar->codec_type) {
+        AVRational sar;
+
+    case AVMEDIA_TYPE_VIDEO:
+        print_int("width",                  frame->width);
+        print_int("height",                 frame->height);
+        s = av_get_pix_fmt_name(frame->format);
+        if (s) print_str    ("pix_fmt", s);
+        else   print_str_opt("pix_fmt", "unknown");
+        sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
+        if (sar.num) {
+            print_q("sample_aspect_ratio", sar, ':');
+        } else {
+            print_str_opt("sample_aspect_ratio", "N/A");
+        }
+        print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));
+        print_int("coded_picture_number",   frame->coded_picture_number);
+        print_int("display_picture_number", frame->display_picture_number);
+        print_int("interlaced_frame",       frame->interlaced_frame);
+        print_int("top_field_first",        frame->top_field_first);
+        print_int("repeat_pict",            frame->repeat_pict);
+
+        print_color_range(w, frame->color_range);
+        print_color_space(w, frame->colorspace);
+        print_primaries(w, frame->color_primaries);
+        print_color_trc(w, frame->color_trc);
+        print_chroma_location(w, frame->chroma_location);
+        break;
+
+    case AVMEDIA_TYPE_AUDIO:
+        s = av_get_sample_fmt_name(frame->format);
+        if (s) print_str    ("sample_fmt", s);
+        else   print_str_opt("sample_fmt", "unknown");
+        print_int("nb_samples",         frame->nb_samples);
+        print_int("channels", frame->channels);
+        if (frame->channel_layout) {
+            av_bprint_clear(&pbuf);
+            av_bprint_channel_layout(&pbuf, frame->channels,
+                                     frame->channel_layout);
+            print_str    ("channel_layout", pbuf.str);
+        } else
+            print_str_opt("channel_layout", "unknown");
+        break;
+    }
+    if (do_show_frame_tags)
+        show_tags(w, frame->metadata, SECTION_ID_FRAME_TAGS);
+    if (do_show_log)
+        show_log(w, SECTION_ID_FRAME_LOGS, SECTION_ID_FRAME_LOG, do_show_log);
+    if (frame->nb_side_data) {
+        writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA_LIST);
+        for (i = 0; i < frame->nb_side_data; i++) {
+            AVFrameSideData *sd = frame->side_data[i];
+            const char *name;
+
+            writer_print_section_header(w, SECTION_ID_FRAME_SIDE_DATA);
+            name = av_frame_side_data_name(sd->type);
+            print_str("side_data_type", name ? name : "unknown");
+            if (sd->type == AV_FRAME_DATA_DISPLAYMATRIX && sd->size >= 9*4) {
+                writer_print_integers(w, "displaymatrix", sd->data, 9, " %11d", 3, 4, 1);
+                print_int("rotation", av_display_rotation_get((int32_t *)sd->data));
+            } else if (sd->type == AV_FRAME_DATA_GOP_TIMECODE && sd->size >= 8) {
+                char tcbuf[AV_TIMECODE_STR_SIZE];
+                av_timecode_make_mpeg_tc_string(tcbuf, *(int64_t *)(sd->data));
+                print_str("timecode", tcbuf);
+            } else if (sd->type == AV_FRAME_DATA_MASTERING_DISPLAY_METADATA) {
+                AVMasteringDisplayMetadata *metadata = (AVMasteringDisplayMetadata *)sd->data;
+
+                if (metadata->has_primaries) {
+                    print_q("red_x", metadata->display_primaries[0][0], '/');
+                    print_q("red_y", metadata->display_primaries[0][1], '/');
+                    print_q("green_x", metadata->display_primaries[1][0], '/');
+                    print_q("green_y", metadata->display_primaries[1][1], '/');
+                    print_q("blue_x", metadata->display_primaries[2][0], '/');
+                    print_q("blue_y", metadata->display_primaries[2][1], '/');
+
+                    print_q("white_point_x", metadata->white_point[0], '/');
+                    print_q("white_point_y", metadata->white_point[1], '/');
+                }
+
+                if (metadata->has_luminance) {
+                    print_q("min_luminance", metadata->min_luminance, '/');
+                    print_q("max_luminance", metadata->max_luminance, '/');
+                }
+            } else if (sd->type == AV_FRAME_DATA_CONTENT_LIGHT_LEVEL) {
+                AVContentLightMetadata *metadata = (AVContentLightMetadata *)sd->data;
+                print_int("max_content", metadata->MaxCLL);
+                print_int("max_average", metadata->MaxFALL);
+            } else if (sd->type == AV_FRAME_DATA_ICC_PROFILE) {
+                AVDictionaryEntry *tag = av_dict_get(sd->metadata, "name", NULL, AV_DICT_MATCH_CASE);
+                if (tag)
+                    print_str(tag->key, tag->value);
+                print_int("size", sd->size);
+            }
+            writer_print_section_footer(w);
+        }
+        writer_print_section_footer(w);
+    }
+
+    writer_print_section_footer(w);
+
+    av_bprint_finalize(&pbuf, NULL);
+    fflush(stdout);
+}
+
+static av_always_inline int process_frame(WriterContext *w,
+                                          InputFile *ifile,
+                                          AVFrame *frame, AVPacket *pkt,
+                                          int *packet_new)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    AVCodecContext *dec_ctx = ifile->streams[pkt->stream_index].dec_ctx;
+    AVCodecParameters *par = ifile->streams[pkt->stream_index].st->codecpar;
+    AVSubtitle sub;
+    int ret = 0, got_frame = 0;
+
+    clear_log(1);
+    if (dec_ctx && dec_ctx->codec) {
+        switch (par->codec_type) {
+        case AVMEDIA_TYPE_VIDEO:
+        case AVMEDIA_TYPE_AUDIO:
+            if (*packet_new) {
+                ret = avcodec_send_packet(dec_ctx, pkt);
+                if (ret == AVERROR(EAGAIN)) {
+                    ret = 0;
+                } else if (ret >= 0 || ret == AVERROR_EOF) {
+                    ret = 0;
+                    *packet_new = 0;
+                }
+            }
+            if (ret >= 0) {
+                ret = avcodec_receive_frame(dec_ctx, frame);
+                if (ret >= 0) {
+                    got_frame = 1;
+                } else if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) {
+                    ret = 0;
+                }
+            }
+            break;
+
+        case AVMEDIA_TYPE_SUBTITLE:
+            ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
+            *packet_new = 0;
+            break;
+        default:
+            *packet_new = 0;
+        }
+    } else {
+        *packet_new = 0;
+    }
+
+    if (ret < 0)
+        return ret;
+    if (got_frame) {
+        int is_sub = (par->codec_type == AVMEDIA_TYPE_SUBTITLE);
+        nb_streams_frames[pkt->stream_index]++;
+        if (do_show_frames)
+            if (is_sub)
+                show_subtitle(w, &sub, ifile->streams[pkt->stream_index].st, fmt_ctx);
+            else
+                show_frame(w, frame, ifile->streams[pkt->stream_index].st, fmt_ctx);
+        if (is_sub)
+            avsubtitle_free(&sub);
+    }
+    return got_frame || *packet_new;
+}
+
+static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
+{
+    av_log(log_ctx, log_level, "id:%d", interval->id);
+
+    if (interval->has_start) {
+        av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
+               av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
+    } else {
+        av_log(log_ctx, log_level, " start:N/A");
+    }
+
+    if (interval->has_end) {
+        av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
+        if (interval->duration_frames)
+            av_log(log_ctx, log_level, "#%"PRId64, interval->end);
+        else
+            av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
+    } else {
+        av_log(log_ctx, log_level, " end:N/A");
+    }
+
+    av_log(log_ctx, log_level, "\n");
+}
+
+static int read_interval_packets(WriterContext *w, InputFile *ifile,
+                                 const ReadInterval *interval, int64_t *cur_ts)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    AVPacket pkt;
+    AVFrame *frame = NULL;
+    int ret = 0, i = 0, frame_count = 0;
+    int64_t start = -INT64_MAX, end = interval->end;
+    int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
+
+    av_init_packet(&pkt);
+
+    av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
+    log_read_interval(interval, NULL, AV_LOG_VERBOSE);
+
+    if (interval->has_start) {
+        int64_t target;
+        if (interval->start_is_offset) {
+            if (*cur_ts == AV_NOPTS_VALUE) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "Could not seek to relative position since current "
+                       "timestamp is not defined\n");
+                ret = AVERROR(EINVAL);
+                goto end;
+            }
+            target = *cur_ts + interval->start;
+        } else {
+            target = interval->start;
+        }
+
+        av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
+               av_ts2timestr(target, &AV_TIME_BASE_Q));
+        if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
+                   interval->start, av_err2str(ret));
+            goto end;
+        }
+    }
+
+    frame = av_frame_alloc();
+    if (!frame) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    while (!av_read_frame(fmt_ctx, &pkt)) {
+        if (ifile->nb_streams > nb_streams) {
+            REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);
+            REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);
+            REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);
+            nb_streams = ifile->nb_streams;
+        }
+        if (selected_streams[pkt.stream_index]) {
+            AVRational tb = ifile->streams[pkt.stream_index].st->time_base;
+
+            if (pkt.pts != AV_NOPTS_VALUE)
+                *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
+
+            if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
+                start = *cur_ts;
+                has_start = 1;
+            }
+
+            if (has_start && !has_end && interval->end_is_offset) {
+                end = start + interval->end;
+                has_end = 1;
+            }
+
+            if (interval->end_is_offset && interval->duration_frames) {
+                if (frame_count >= interval->end)
+                    break;
+            } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
+                break;
+            }
+
+            frame_count++;
+            if (do_read_packets) {
+                if (do_show_packets)
+                    show_packet(w, ifile, &pkt, i++);
+                nb_streams_packets[pkt.stream_index]++;
+            }
+            if (do_read_frames) {
+                int packet_new = 1;
+                while (process_frame(w, ifile, frame, &pkt, &packet_new) > 0);
+            }
+        }
+        av_packet_unref(&pkt);
+    }
+    av_init_packet(&pkt);
+    pkt.data = NULL;
+    pkt.size = 0;
+    //Flush remaining frames that are cached in the decoder
+    for (i = 0; i < fmt_ctx->nb_streams; i++) {
+        pkt.stream_index = i;
+        if (do_read_frames)
+            while (process_frame(w, ifile, frame, &pkt, &(int){1}) > 0);
+    }
+
+end:
+    av_frame_free(&frame);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
+        log_read_interval(interval, NULL, AV_LOG_ERROR);
+    }
+    return ret;
+}
+
+static int read_packets(WriterContext *w, InputFile *ifile)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    int i, ret = 0;
+    int64_t cur_ts = fmt_ctx->start_time;
+
+    if (read_intervals_nb == 0) {
+        ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
+        ret = read_interval_packets(w, ifile, &interval, &cur_ts);
+    } else {
+        for (i = 0; i < read_intervals_nb; i++) {
+            ret = read_interval_packets(w, ifile, &read_intervals[i], &cur_ts);
+            if (ret < 0)
+                break;
+        }
+    }
+
+    return ret;
+}
+
+static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, InputStream *ist, int in_program)
+{
+    AVStream *stream = ist->st;
+    AVCodecParameters *par;
+    AVCodecContext *dec_ctx;
+    char val_str[128];
+    const char *s;
+    AVRational sar, dar;
+    AVBPrint pbuf;
+    const AVCodecDescriptor *cd;
+    int ret = 0;
+    const char *profile = NULL;
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
+
+    print_int("index", stream->index);
+
+    par     = stream->codecpar;
+    dec_ctx = ist->dec_ctx;
+    if (cd = avcodec_descriptor_get(par->codec_id)) {
+        print_str("codec_name", cd->name);
+        if (!do_bitexact) {
+            print_str("codec_long_name",
+                      cd->long_name ? cd->long_name : "unknown");
+        }
+    } else {
+        print_str_opt("codec_name", "unknown");
+        if (!do_bitexact) {
+            print_str_opt("codec_long_name", "unknown");
+        }
+    }
+
+    if (!do_bitexact && (profile = avcodec_profile_name(par->codec_id, par->profile)))
+        print_str("profile", profile);
+    else {
+        if (par->profile != FF_PROFILE_UNKNOWN) {
+            char profile_num[12];
+            snprintf(profile_num, sizeof(profile_num), "%d", par->profile);
+            print_str("profile", profile_num);
+        } else
+            print_str_opt("profile", "unknown");
+    }
+
+    s = av_get_media_type_string(par->codec_type);
+    if (s) print_str    ("codec_type", s);
+    else   print_str_opt("codec_type", "unknown");
+#if FF_API_LAVF_AVCTX
+    if (dec_ctx)
+        print_q("codec_time_base", dec_ctx->time_base, '/');
+#endif
+
+    /* print AVI/FourCC tag */
+    print_str("codec_tag_string",    av_fourcc2str(par->codec_tag));
+    print_fmt("codec_tag", "0x%04"PRIx32, par->codec_tag);
+
+    switch (par->codec_type) {
+    case AVMEDIA_TYPE_VIDEO:
+        print_int("width",        par->width);
+        print_int("height",       par->height);
+        if (dec_ctx) {
+            print_int("coded_width",  dec_ctx->coded_width);
+            print_int("coded_height", dec_ctx->coded_height);
+        }
+        print_int("has_b_frames", par->video_delay);
+        sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
+        if (sar.den) {
+            print_q("sample_aspect_ratio", sar, ':');
+            av_reduce(&dar.num, &dar.den,
+                      par->width  * sar.num,
+                      par->height * sar.den,
+                      1024*1024);
+            print_q("display_aspect_ratio", dar, ':');
+        } else {
+            print_str_opt("sample_aspect_ratio", "N/A");
+            print_str_opt("display_aspect_ratio", "N/A");
+        }
+        s = av_get_pix_fmt_name(par->format);
+        if (s) print_str    ("pix_fmt", s);
+        else   print_str_opt("pix_fmt", "unknown");
+        print_int("level",   par->level);
+
+        print_color_range(w, par->color_range);
+        print_color_space(w, par->color_space);
+        print_color_trc(w, par->color_trc);
+        print_primaries(w, par->color_primaries);
+        print_chroma_location(w, par->chroma_location);
+
+        if (par->field_order == AV_FIELD_PROGRESSIVE)
+            print_str("field_order", "progressive");
+        else if (par->field_order == AV_FIELD_TT)
+            print_str("field_order", "tt");
+        else if (par->field_order == AV_FIELD_BB)
+            print_str("field_order", "bb");
+        else if (par->field_order == AV_FIELD_TB)
+            print_str("field_order", "tb");
+        else if (par->field_order == AV_FIELD_BT)
+            print_str("field_order", "bt");
+        else
+            print_str_opt("field_order", "unknown");
+
+#if FF_API_PRIVATE_OPT
+        if (dec_ctx && dec_ctx->timecode_frame_start >= 0) {
+            char tcbuf[AV_TIMECODE_STR_SIZE];
+            av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
+            print_str("timecode", tcbuf);
+        } else {
+            print_str_opt("timecode", "N/A");
+        }
+#endif
+        if (dec_ctx)
+            print_int("refs", dec_ctx->refs);
+        break;
+
+    case AVMEDIA_TYPE_AUDIO:
+        s = av_get_sample_fmt_name(par->format);
+        if (s) print_str    ("sample_fmt", s);
+        else   print_str_opt("sample_fmt", "unknown");
+        print_val("sample_rate",     par->sample_rate, unit_hertz_str);
+        print_int("channels",        par->channels);
+
+        if (par->channel_layout) {
+            av_bprint_clear(&pbuf);
+            av_bprint_channel_layout(&pbuf, par->channels, par->channel_layout);
+            print_str    ("channel_layout", pbuf.str);
+        } else {
+            print_str_opt("channel_layout", "unknown");
+        }
+
+        print_int("bits_per_sample", av_get_bits_per_sample(par->codec_id));
+        break;
+
+    case AVMEDIA_TYPE_SUBTITLE:
+        if (par->width)
+            print_int("width",       par->width);
+        else
+            print_str_opt("width",   "N/A");
+        if (par->height)
+            print_int("height",      par->height);
+        else
+            print_str_opt("height",  "N/A");
+        break;
+    }
+
+    if (dec_ctx && dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
+        const AVOption *opt = NULL;
+        while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
+            uint8_t *str;
+            if (opt->flags) continue;
+            if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
+                print_str(opt->name, str);
+                av_free(str);
+            }
+        }
+    }
+
+    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
+    else                                          print_str_opt("id", "N/A");
+    print_q("r_frame_rate",   stream->r_frame_rate,   '/');
+    print_q("avg_frame_rate", stream->avg_frame_rate, '/');
+    print_q("time_base",      stream->time_base,      '/');
+    print_ts  ("start_pts",   stream->start_time);
+    print_time("start_time",  stream->start_time, &stream->time_base);
+    print_ts  ("duration_ts", stream->duration);
+    print_time("duration",    stream->duration, &stream->time_base);
+    if (par->bit_rate > 0)     print_val    ("bit_rate", par->bit_rate, unit_bit_per_second_str);
+    else                       print_str_opt("bit_rate", "N/A");
+#if FF_API_LAVF_AVCTX
+    if (stream->codec->rc_max_rate > 0) print_val ("max_bit_rate", stream->codec->rc_max_rate, unit_bit_per_second_str);
+    else                                print_str_opt("max_bit_rate", "N/A");
+#endif
+    if (dec_ctx && dec_ctx->bits_per_raw_sample > 0) print_fmt("bits_per_raw_sample", "%d", dec_ctx->bits_per_raw_sample);
+    else                                             print_str_opt("bits_per_raw_sample", "N/A");
+    if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
+    else                   print_str_opt("nb_frames", "N/A");
+    if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
+    else                                print_str_opt("nb_read_frames", "N/A");
+    if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
+    else                                print_str_opt("nb_read_packets", "N/A");
+    if (do_show_data)
+        writer_print_data(w, "extradata", par->extradata,
+                                          par->extradata_size);
+    writer_print_data_hash(w, "extradata_hash", par->extradata,
+                                                par->extradata_size);
+
+    /* Print disposition information */
+#define PRINT_DISPOSITION(flagname, name) do {                                \
+        print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
+    } while (0)
+
+    if (do_show_stream_disposition) {
+    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
+    PRINT_DISPOSITION(DEFAULT,          "default");
+    PRINT_DISPOSITION(DUB,              "dub");
+    PRINT_DISPOSITION(ORIGINAL,         "original");
+    PRINT_DISPOSITION(COMMENT,          "comment");
+    PRINT_DISPOSITION(LYRICS,           "lyrics");
+    PRINT_DISPOSITION(KARAOKE,          "karaoke");
+    PRINT_DISPOSITION(FORCED,           "forced");
+    PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
+    PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");
+    PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");
+    PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");
+    PRINT_DISPOSITION(TIMED_THUMBNAILS, "timed_thumbnails");
+    writer_print_section_footer(w);
+    }
+
+    if (do_show_stream_tags)
+        ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
+
+    if (stream->nb_side_data) {
+        print_pkt_side_data(w, stream->codecpar, stream->side_data, stream->nb_side_data,
+                            SECTION_ID_STREAM_SIDE_DATA_LIST,
+                            SECTION_ID_STREAM_SIDE_DATA);
+    }
+
+    writer_print_section_footer(w);
+    av_bprint_finalize(&pbuf, NULL);
+    fflush(stdout);
+
+    return ret;
+}
+
+static int show_streams(WriterContext *w, InputFile *ifile)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_STREAMS);
+    for (i = 0; i < ifile->nb_streams; i++)
+        if (selected_streams[i]) {
+            ret = show_stream(w, fmt_ctx, i, &ifile->streams[i], 0);
+            if (ret < 0)
+                break;
+        }
+    writer_print_section_footer(w);
+
+    return ret;
+}
+
+static int show_program(WriterContext *w, InputFile *ifile, AVProgram *program)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_PROGRAM);
+    print_int("program_id", program->id);
+    print_int("program_num", program->program_num);
+    print_int("nb_streams", program->nb_stream_indexes);
+    print_int("pmt_pid", program->pmt_pid);
+    print_int("pcr_pid", program->pcr_pid);
+    print_ts("start_pts", program->start_time);
+    print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
+    print_ts("end_pts", program->end_time);
+    print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
+    if (do_show_program_tags)
+        ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
+    if (ret < 0)
+        goto end;
+
+    writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
+    for (i = 0; i < program->nb_stream_indexes; i++) {
+        if (selected_streams[program->stream_index[i]]) {
+            ret = show_stream(w, fmt_ctx, program->stream_index[i], &ifile->streams[program->stream_index[i]], 1);
+            if (ret < 0)
+                break;
+        }
+    }
+    writer_print_section_footer(w);
+
+end:
+    writer_print_section_footer(w);
+    return ret;
+}
+
+static int show_programs(WriterContext *w, InputFile *ifile)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_PROGRAMS);
+    for (i = 0; i < fmt_ctx->nb_programs; i++) {
+        AVProgram *program = fmt_ctx->programs[i];
+        if (!program)
+            continue;
+        ret = show_program(w, ifile, program);
+        if (ret < 0)
+            break;
+    }
+    writer_print_section_footer(w);
+    return ret;
+}
+
+static int show_chapters(WriterContext *w, InputFile *ifile)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_CHAPTERS);
+    for (i = 0; i < fmt_ctx->nb_chapters; i++) {
+        AVChapter *chapter = fmt_ctx->chapters[i];
+
+        writer_print_section_header(w, SECTION_ID_CHAPTER);
+        print_int("id", chapter->id);
+        print_q  ("time_base", chapter->time_base, '/');
+        print_int("start", chapter->start);
+        print_time("start_time", chapter->start, &chapter->time_base);
+        print_int("end", chapter->end);
+        print_time("end_time", chapter->end, &chapter->time_base);
+        if (do_show_chapter_tags)
+            ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
+        writer_print_section_footer(w);
+    }
+    writer_print_section_footer(w);
+
+    return ret;
+}
+
+static int show_format(WriterContext *w, InputFile *ifile)
+{
+    AVFormatContext *fmt_ctx = ifile->fmt_ctx;
+    char val_str[128];
+    int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
+    int ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_FORMAT);
+    print_str_validate("filename", fmt_ctx->filename);
+    print_int("nb_streams",       fmt_ctx->nb_streams);
+    print_int("nb_programs",      fmt_ctx->nb_programs);
+    print_str("format_name",      fmt_ctx->iformat->name);
+    if (!do_bitexact) {
+        if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
+        else                             print_str_opt("format_long_name", "unknown");
+    }
+    print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
+    print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
+    if (size >= 0) print_val    ("size", size, unit_byte_str);
+    else           print_str_opt("size", "N/A");
+    if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
+    else                       print_str_opt("bit_rate", "N/A");
+    print_int("probe_score", av_format_get_probe_score(fmt_ctx));
+    if (do_show_format_tags)
+        ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
+
+    writer_print_section_footer(w);
+    fflush(stdout);
+    return ret;
+}
+
+static void show_error(WriterContext *w, int err)
+{
+    char errbuf[128];
+    const char *errbuf_ptr = errbuf;
+
+    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
+        errbuf_ptr = strerror(AVUNERROR(err));
+
+    writer_print_section_header(w, SECTION_ID_ERROR);
+    print_int("code", err);
+    print_str("string", errbuf_ptr);
+    writer_print_section_footer(w);
+}
+
+static int open_input_file(InputFile *ifile, const char *filename)
+{
+    int err, i;
+    AVFormatContext *fmt_ctx = NULL;
+    AVDictionaryEntry *t;
+    int scan_all_pmts_set = 0;
+
+    fmt_ctx = avformat_alloc_context();
+    if (!fmt_ctx) {
+        print_error(filename, AVERROR(ENOMEM));
+        exit_program(1);
+    }
+
+    fmt_ctx->flags |= AVFMT_FLAG_KEEP_SIDE_DATA;
+
+    if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
+        av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
+        scan_all_pmts_set = 1;
+    }
+    if ((err = avformat_open_input(&fmt_ctx, filename,
+                                   iformat, &format_opts)) < 0) {
+        print_error(filename, err);
+        return err;
+    }
+    ifile->fmt_ctx = fmt_ctx;
+    if (scan_all_pmts_set)
+        av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
+    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
+        return AVERROR_OPTION_NOT_FOUND;
+    }
+
+    if (find_stream_info) {
+        AVDictionary **opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
+        int orig_nb_streams = fmt_ctx->nb_streams;
+
+        err = avformat_find_stream_info(fmt_ctx, opts);
+
+        for (i = 0; i < orig_nb_streams; i++)
+            av_dict_free(&opts[i]);
+        av_freep(&opts);
+
+        if (err < 0) {
+            print_error(filename, err);
+            return err;
+        }
+    }
+
+    av_dump_format(fmt_ctx, 0, filename, 0);
+
+    ifile->streams = av_mallocz_array(fmt_ctx->nb_streams,
+                                      sizeof(*ifile->streams));
+    if (!ifile->streams)
+        exit(1);
+    ifile->nb_streams = fmt_ctx->nb_streams;
+
+    /* bind a decoder to each input stream */
+    for (i = 0; i < fmt_ctx->nb_streams; i++) {
+        InputStream *ist = &ifile->streams[i];
+        AVStream *stream = fmt_ctx->streams[i];
+        AVCodec *codec;
+
+        ist->st = stream;
+
+        if (stream->codecpar->codec_id == AV_CODEC_ID_PROBE) {
+            av_log(NULL, AV_LOG_WARNING,
+                   "Failed to probe codec for input stream %d\n",
+                    stream->index);
+            continue;
+        }
+
+        codec = avcodec_find_decoder(stream->codecpar->codec_id);
+        if (!codec) {
+            av_log(NULL, AV_LOG_WARNING,
+                    "Unsupported codec with id %d for input stream %d\n",
+                    stream->codecpar->codec_id, stream->index);
+            continue;
+        }
+        {
+            AVDictionary *opts = filter_codec_opts(codec_opts, stream->codecpar->codec_id,
+                                                   fmt_ctx, stream, codec);
+
+            ist->dec_ctx = avcodec_alloc_context3(codec);
+            if (!ist->dec_ctx)
+                exit(1);
+
+            err = avcodec_parameters_to_context(ist->dec_ctx, stream->codecpar);
+            if (err < 0)
+                exit(1);
+
+            if (do_show_log) {
+                // For loging it is needed to disable at least frame threads as otherwise
+                // the log information would need to be reordered and matches up to contexts and frames
+                // That is in fact possible but not trivial
+                av_dict_set(&codec_opts, "threads", "1", 0);
+            }
+
+            av_codec_set_pkt_timebase(ist->dec_ctx, stream->time_base);
+            ist->dec_ctx->framerate = stream->avg_frame_rate;
+
+            if (avcodec_open2(ist->dec_ctx, codec, &opts) < 0) {
+                av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
+                       stream->index);
+                exit(1);
+            }
+
+            if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+                av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
+                       t->key, stream->index);
+                return AVERROR_OPTION_NOT_FOUND;
+            }
+        }
+    }
+
+    ifile->fmt_ctx = fmt_ctx;
+    return 0;
+}
+
+static void close_input_file(InputFile *ifile)
+{
+    int i;
+
+    /* close decoder for each stream */
+    for (i = 0; i < ifile->nb_streams; i++)
+        if (ifile->streams[i].st->codecpar->codec_id != AV_CODEC_ID_NONE)
+            avcodec_free_context(&ifile->streams[i].dec_ctx);
+
+    av_freep(&ifile->streams);
+    ifile->nb_streams = 0;
+
+    avformat_close_input(&ifile->fmt_ctx);
+}
+
+static int probe_file(WriterContext *wctx, const char *filename)
+{
+    InputFile ifile = { 0 };
+    int ret, i;
+    int section_id;
+
+    do_read_frames = do_show_frames || do_count_frames;
+    do_read_packets = do_show_packets || do_count_packets;
+
+    ret = open_input_file(&ifile, filename);
+    if (ret < 0)
+        goto end;
+
+#define CHECK_END if (ret < 0) goto end
+
+    nb_streams = ifile.fmt_ctx->nb_streams;
+    REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,ifile.fmt_ctx->nb_streams);
+    REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,ifile.fmt_ctx->nb_streams);
+    REALLOCZ_ARRAY_STREAM(selected_streams,0,ifile.fmt_ctx->nb_streams);
+
+    for (i = 0; i < ifile.fmt_ctx->nb_streams; i++) {
+        if (stream_specifier) {
+            ret = avformat_match_stream_specifier(ifile.fmt_ctx,
+                                                  ifile.fmt_ctx->streams[i],
+                                                  stream_specifier);
+            CHECK_END;
+            else
+                selected_streams[i] = ret;
+            ret = 0;
+        } else {
+            selected_streams[i] = 1;
+        }
+        if (!selected_streams[i])
+            ifile.fmt_ctx->streams[i]->discard = AVDISCARD_ALL;
+    }
+
+    if (do_read_frames || do_read_packets) {
+        if (do_show_frames && do_show_packets &&
+            wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
+            section_id = SECTION_ID_PACKETS_AND_FRAMES;
+        else if (do_show_packets && !do_show_frames)
+            section_id = SECTION_ID_PACKETS;
+        else // (!do_show_packets && do_show_frames)
+            section_id = SECTION_ID_FRAMES;
+        if (do_show_frames || do_show_packets)
+            writer_print_section_header(wctx, section_id);
+        ret = read_packets(wctx, &ifile);
+        if (do_show_frames || do_show_packets)
+            writer_print_section_footer(wctx);
+        CHECK_END;
+    }
+
+    if (do_show_programs) {
+        ret = show_programs(wctx, &ifile);
+        CHECK_END;
+    }
+
+    if (do_show_streams) {
+        ret = show_streams(wctx, &ifile);
+        CHECK_END;
+    }
+    if (do_show_chapters) {
+        ret = show_chapters(wctx, &ifile);
+        CHECK_END;
+    }
+    if (do_show_format) {
+        ret = show_format(wctx, &ifile);
+        CHECK_END;
+    }
+
+end:
+    if (ifile.fmt_ctx)
+        close_input_file(&ifile);
+    av_freep(&nb_streams_frames);
+    av_freep(&nb_streams_packets);
+    av_freep(&selected_streams);
+
+    return ret;
+}
+
+static void show_usage(void)
+{
+    av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
+    av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
+    av_log(NULL, AV_LOG_INFO, "\n");
+}
+
+static void ffprobe_show_program_version(WriterContext *w)
+{
+    AVBPrint pbuf;
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
+    print_str("version", FFMPEG_VERSION);
+    print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
+              program_birth_year, CONFIG_THIS_YEAR);
+    print_str("compiler_ident", CC_IDENT);
+    print_str("configuration", FFMPEG_CONFIGURATION);
+    writer_print_section_footer(w);
+
+    av_bprint_finalize(&pbuf, NULL);
+}
+
+#define SHOW_LIB_VERSION(libname, LIBNAME)                              \
+    do {                                                                \
+        if (CONFIG_##LIBNAME) {                                         \
+            unsigned int version = libname##_version();                 \
+            writer_print_section_header(w, SECTION_ID_LIBRARY_VERSION); \
+            print_str("name",    "lib" #libname);                       \
+            print_int("major",   LIB##LIBNAME##_VERSION_MAJOR);         \
+            print_int("minor",   LIB##LIBNAME##_VERSION_MINOR);         \
+            print_int("micro",   LIB##LIBNAME##_VERSION_MICRO);         \
+            print_int("version", version);                              \
+            print_str("ident",   LIB##LIBNAME##_IDENT);                 \
+            writer_print_section_footer(w);                             \
+        }                                                               \
+    } while (0)
+
+static void ffprobe_show_library_versions(WriterContext *w)
+{
+    writer_print_section_header(w, SECTION_ID_LIBRARY_VERSIONS);
+    SHOW_LIB_VERSION(avutil,     AVUTIL);
+    SHOW_LIB_VERSION(avcodec,    AVCODEC);
+    SHOW_LIB_VERSION(avformat,   AVFORMAT);
+    SHOW_LIB_VERSION(avdevice,   AVDEVICE);
+    SHOW_LIB_VERSION(avfilter,   AVFILTER);
+    SHOW_LIB_VERSION(swscale,    SWSCALE);
+    SHOW_LIB_VERSION(swresample, SWRESAMPLE);
+    SHOW_LIB_VERSION(postproc,   POSTPROC);
+    writer_print_section_footer(w);
+}
+
+#define PRINT_PIX_FMT_FLAG(flagname, name)                                \
+    do {                                                                  \
+        print_int(name, !!(pixdesc->flags & AV_PIX_FMT_FLAG_##flagname)); \
+    } while (0)
+
+static void ffprobe_show_pixel_formats(WriterContext *w)
+{
+    const AVPixFmtDescriptor *pixdesc = NULL;
+    int i, n;
+
+    writer_print_section_header(w, SECTION_ID_PIXEL_FORMATS);
+    while (pixdesc = av_pix_fmt_desc_next(pixdesc)) {
+        writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT);
+        print_str("name", pixdesc->name);
+        print_int("nb_components", pixdesc->nb_components);
+        if ((pixdesc->nb_components >= 3) && !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB)) {
+            print_int    ("log2_chroma_w", pixdesc->log2_chroma_w);
+            print_int    ("log2_chroma_h", pixdesc->log2_chroma_h);
+        } else {
+            print_str_opt("log2_chroma_w", "N/A");
+            print_str_opt("log2_chroma_h", "N/A");
+        }
+        n = av_get_bits_per_pixel(pixdesc);
+        if (n) print_int    ("bits_per_pixel", n);
+        else   print_str_opt("bits_per_pixel", "N/A");
+        if (do_show_pixel_format_flags) {
+            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_FLAGS);
+            PRINT_PIX_FMT_FLAG(BE,        "big_endian");
+            PRINT_PIX_FMT_FLAG(PAL,       "palette");
+            PRINT_PIX_FMT_FLAG(BITSTREAM, "bitstream");
+            PRINT_PIX_FMT_FLAG(HWACCEL,   "hwaccel");
+            PRINT_PIX_FMT_FLAG(PLANAR,    "planar");
+            PRINT_PIX_FMT_FLAG(RGB,       "rgb");
+            PRINT_PIX_FMT_FLAG(PSEUDOPAL, "pseudopal");
+            PRINT_PIX_FMT_FLAG(ALPHA,     "alpha");
+            writer_print_section_footer(w);
+        }
+        if (do_show_pixel_format_components && (pixdesc->nb_components > 0)) {
+            writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENTS);
+            for (i = 0; i < pixdesc->nb_components; i++) {
+                writer_print_section_header(w, SECTION_ID_PIXEL_FORMAT_COMPONENT);
+                print_int("index", i + 1);
+                print_int("bit_depth", pixdesc->comp[i].depth);
+                writer_print_section_footer(w);
+            }
+            writer_print_section_footer(w);
+        }
+        writer_print_section_footer(w);
+    }
+    writer_print_section_footer(w);
+}
+
+static int opt_format(void *optctx, const char *opt, const char *arg)
+{
+    iformat = av_find_input_format(arg);
+    if (!iformat) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
+        return AVERROR(EINVAL);
+    }
+    return 0;
+}
+
+static inline void mark_section_show_entries(SectionID section_id,
+                                             int show_all_entries, AVDictionary *entries)
+{
+    struct section *section = &sections[section_id];
+
+    section->show_all_entries = show_all_entries;
+    if (show_all_entries) {
+        SectionID *id;
+        for (id = section->children_ids; *id != -1; id++)
+            mark_section_show_entries(*id, show_all_entries, entries);
+    } else {
+        av_dict_copy(&section->entries_to_show, entries, 0);
+    }
+}
+
+static int match_section(const char *section_name,
+                         int show_all_entries, AVDictionary *entries)
+{
+    int i, ret = 0;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
+        const struct section *section = &sections[i];
+        if (!strcmp(section_name, section->name) ||
+            (section->unique_name && !strcmp(section_name, section->unique_name))) {
+            av_log(NULL, AV_LOG_DEBUG,
+                   "'%s' matches section with unique name '%s'\n", section_name,
+                   (char *)av_x_if_null(section->unique_name, section->name));
+            ret++;
+            mark_section_show_entries(section->id, show_all_entries, entries);
+        }
+    }
+    return ret;
+}
+
+static int opt_show_entries(void *optctx, const char *opt, const char *arg)
+{
+    const char *p = arg;
+    int ret = 0;
+
+    while (*p) {
+        AVDictionary *entries = NULL;
+        char *section_name = av_get_token(&p, "=:");
+        int show_all_entries = 0;
+
+        if (!section_name) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Missing section name for option '%s'\n", opt);
+            return AVERROR(EINVAL);
+        }
+
+        if (*p == '=') {
+            p++;
+            while (*p && *p != ':') {
+                char *entry = av_get_token(&p, ",:");
+                if (!entry)
+                    break;
+                av_log(NULL, AV_LOG_VERBOSE,
+                       "Adding '%s' to the entries to show in section '%s'\n",
+                       entry, section_name);
+                av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
+                if (*p == ',')
+                    p++;
+            }
+        } else {
+            show_all_entries = 1;
+        }
+
+        ret = match_section(section_name, show_all_entries, entries);
+        if (ret == 0) {
+            av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
+            ret = AVERROR(EINVAL);
+        }
+        av_dict_free(&entries);
+        av_free(section_name);
+
+        if (ret <= 0)
+            break;
+        if (*p)
+            p++;
+    }
+
+    return ret;
+}
+
+static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
+{
+    char *buf = av_asprintf("format=%s", arg);
+    int ret;
+
+    if (!buf)
+        return AVERROR(ENOMEM);
+
+    av_log(NULL, AV_LOG_WARNING,
+           "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
+           opt, arg);
+    ret = opt_show_entries(optctx, opt, buf);
+    av_free(buf);
+    return ret;
+}
+
+static void opt_input_file(void *optctx, const char *arg)
+{
+    if (input_filename) {
+        av_log(NULL, AV_LOG_ERROR,
+                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
+                arg, input_filename);
+        exit_program(1);
+    }
+    if (!strcmp(arg, "-"))
+        arg = "pipe:";
+    input_filename = arg;
+}
+
+static int opt_input_file_i(void *optctx, const char *opt, const char *arg)
+{
+    opt_input_file(optctx, arg);
+    return 0;
+}
+
+void show_help_default(const char *opt, const char *arg)
+{
+    av_log_set_callback(log_callback_help);
+    show_usage();
+    show_help_options(options, "Main options:", 0, 0, 0);
+    printf("\n");
+
+    show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
+    show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
+}
+
+/**
+ * Parse interval specification, according to the format:
+ * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
+ * INTERVALS ::= INTERVAL[,INTERVALS]
+*/
+static int parse_read_interval(const char *interval_spec,
+                               ReadInterval *interval)
+{
+    int ret = 0;
+    char *next, *p, *spec = av_strdup(interval_spec);
+    if (!spec)
+        return AVERROR(ENOMEM);
+
+    if (!*spec) {
+        av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+
+    p = spec;
+    next = strchr(spec, '%');
+    if (next)
+        *next++ = 0;
+
+    /* parse first part */
+    if (*p) {
+        interval->has_start = 1;
+
+        if (*p == '+') {
+            interval->start_is_offset = 1;
+            p++;
+        } else {
+            interval->start_is_offset = 0;
+        }
+
+        ret = av_parse_time(&interval->start, p, 1);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
+            goto end;
+        }
+    } else {
+        interval->has_start = 0;
+    }
+
+    /* parse second part */
+    p = next;
+    if (p && *p) {
+        int64_t us;
+        interval->has_end = 1;
+
+        if (*p == '+') {
+            interval->end_is_offset = 1;
+            p++;
+        } else {
+            interval->end_is_offset = 0;
+        }
+
+        if (interval->end_is_offset && *p == '#') {
+            long long int lli;
+            char *tail;
+            interval->duration_frames = 1;
+            p++;
+            lli = strtoll(p, &tail, 10);
+            if (*tail || lli < 0) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "Invalid or negative value '%s' for duration number of frames\n", p);
+                goto end;
+            }
+            interval->end = lli;
+        } else {
+            interval->duration_frames = 0;
+            ret = av_parse_time(&us, p, 1);
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
+                goto end;
+            }
+            interval->end = us;
+        }
+    } else {
+        interval->has_end = 0;
+    }
+
+end:
+    av_free(spec);
+    return ret;
+}
+
+static int parse_read_intervals(const char *intervals_spec)
+{
+    int ret, n, i;
+    char *p, *spec = av_strdup(intervals_spec);
+    if (!spec)
+        return AVERROR(ENOMEM);
+
+    /* preparse specification, get number of intervals */
+    for (n = 0, p = spec; *p; p++)
+        if (*p == ',')
+            n++;
+    n++;
+
+    read_intervals = av_malloc_array(n, sizeof(*read_intervals));
+    if (!read_intervals) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    read_intervals_nb = n;
+
+    /* parse intervals */
+    p = spec;
+    for (i = 0; p; i++) {
+        char *next;
+
+        av_assert0(i < read_intervals_nb);
+        next = strchr(p, ',');
+        if (next)
+            *next++ = 0;
+
+        read_intervals[i].id = i;
+        ret = parse_read_interval(p, &read_intervals[i]);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
+                   i, p);
+            goto end;
+        }
+        av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
+        log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
+        p = next;
+    }
+    av_assert0(i == read_intervals_nb);
+
+end:
+    av_free(spec);
+    return ret;
+}
+
+static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
+{
+    return parse_read_intervals(arg);
+}
+
+static int opt_pretty(void *optctx, const char *opt, const char *arg)
+{
+    show_value_unit              = 1;
+    use_value_prefix             = 1;
+    use_byte_value_binary_prefix = 1;
+    use_value_sexagesimal_format = 1;
+    return 0;
+}
+
+static void print_section(SectionID id, int level)
+{
+    const SectionID *pid;
+    const struct section *section = &sections[id];
+    printf("%c%c%c",
+           section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',
+           section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',
+           section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');
+    printf("%*c  %s", level * 4, ' ', section->name);
+    if (section->unique_name)
+        printf("/%s", section->unique_name);
+    printf("\n");
+
+    for (pid = section->children_ids; *pid != -1; pid++)
+        print_section(*pid, level+1);
+}
+
+static int opt_sections(void *optctx, const char *opt, const char *arg)
+{
+    printf("Sections:\n"
+           "W.. = Section is a wrapper (contains other sections, no local entries)\n"
+           ".A. = Section contains an array of elements of the same type\n"
+           "..V = Section may contain a variable number of fields with variable keys\n"
+           "FLAGS NAME/UNIQUE_NAME\n"
+           "---\n");
+    print_section(SECTION_ID_ROOT, 0);
+    return 0;
+}
+
+static int opt_show_versions(const char *opt, const char *arg)
+{
+    mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
+    mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
+    return 0;
+}
+
+#define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \
+    static int opt_show_##section(const char *opt, const char *arg)     \
+    {                                                                   \
+        mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
+        return 0;                                                       \
+    }
+
+DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS)
+DEFINE_OPT_SHOW_SECTION(error,            ERROR)
+DEFINE_OPT_SHOW_SECTION(format,           FORMAT)
+DEFINE_OPT_SHOW_SECTION(frames,           FRAMES)
+DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS)
+DEFINE_OPT_SHOW_SECTION(packets,          PACKETS)
+DEFINE_OPT_SHOW_SECTION(pixel_formats,    PIXEL_FORMATS)
+DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION)
+DEFINE_OPT_SHOW_SECTION(streams,          STREAMS)
+DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS)
+
+static const OptionDef real_options[] = {
+    CMDUTILS_COMMON_OPTIONS
+    { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
+    { "unit", OPT_BOOL, {&show_value_unit}, "show unit of the displayed values" },
+    { "prefix", OPT_BOOL, {&use_value_prefix}, "use SI prefixes for the displayed values" },
+    { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
+      "use binary prefixes for byte units" },
+    { "sexagesimal", OPT_BOOL,  {&use_value_sexagesimal_format},
+      "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
+    { "pretty", 0, {.func_arg = opt_pretty},
+      "prettify the format of displayed values, make it more human readable" },
+    { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
+      "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
+    { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
+    { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
+    { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
+    { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
+    { "show_data_hash", OPT_STRING | HAS_ARG, {(void*)&show_data_hash}, "show packets data hash" },
+    { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },
+    { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },
+    { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },
+    { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
+      "show a particular entry from the format/container info", "entry" },
+    { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
+      "show a set of specified entries", "entry_list" },
+#if HAVE_THREADS
+    { "show_log", OPT_INT|HAS_ARG, {(void*)&do_show_log}, "show log" },
+#endif
+    { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
+    { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
+    { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
+    { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
+    { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
+    { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
+    { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },
+    { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
+    { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },
+    { "show_pixel_formats", 0, {(void*)&opt_show_pixel_formats}, "show pixel format descriptions" },
+    { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
+    { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
+    { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
+    { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
+    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
+    { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
+    { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
+        "read and decode the streams to fill missing information with heuristics" },
+    { NULL, },
+};
+
+static inline int check_section_show_entries(int section_id)
+{
+    int *id;
+    struct section *section = &sections[section_id];
+    if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
+        return 1;
+    for (id = section->children_ids; *id != -1; id++)
+        if (check_section_show_entries(*id))
+            return 1;
+    return 0;
+}
+
+#define SET_DO_SHOW(id, varname) do {                                   \
+        if (check_section_show_entries(SECTION_ID_##id))                \
+            do_show_##varname = 1;                                      \
+    } while (0)
+
+int main(int argc, char **argv)
+{
+    const Writer *w;
+    WriterContext *wctx;
+    char *buf;
+    char *w_name = NULL, *w_args = NULL;
+    int ret, i;
+
+    init_dynload();
+
+#if HAVE_THREADS
+    ret = pthread_mutex_init(&log_mutex, NULL);
+    if (ret != 0) {
+        goto end;
+    }
+#endif
+    av_log_set_flags(AV_LOG_SKIP_REPEATED);
+    register_exit(ffprobe_cleanup);
+
+    options = real_options;
+    parse_loglevel(argc, argv, options);
+    av_register_all();
+    avformat_network_init();
+    init_opts();
+#if CONFIG_AVDEVICE
+    avdevice_register_all();
+#endif
+
+    show_banner(argc, argv, options);
+    parse_options(NULL, argc, argv, options, opt_input_file);
+
+    if (do_show_log)
+        av_log_set_callback(log_callback);
+
+    /* mark things to show, based on -show_entries */
+    SET_DO_SHOW(CHAPTERS, chapters);
+    SET_DO_SHOW(ERROR, error);
+    SET_DO_SHOW(FORMAT, format);
+    SET_DO_SHOW(FRAMES, frames);
+    SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
+    SET_DO_SHOW(PACKETS, packets);
+    SET_DO_SHOW(PIXEL_FORMATS, pixel_formats);
+    SET_DO_SHOW(PIXEL_FORMAT_FLAGS, pixel_format_flags);
+    SET_DO_SHOW(PIXEL_FORMAT_COMPONENTS, pixel_format_components);
+    SET_DO_SHOW(PROGRAM_VERSION, program_version);
+    SET_DO_SHOW(PROGRAMS, programs);
+    SET_DO_SHOW(STREAMS, streams);
+    SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
+    SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
+
+    SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
+    SET_DO_SHOW(FORMAT_TAGS, format_tags);
+    SET_DO_SHOW(FRAME_TAGS, frame_tags);
+    SET_DO_SHOW(PROGRAM_TAGS, program_tags);
+    SET_DO_SHOW(STREAM_TAGS, stream_tags);
+    SET_DO_SHOW(PROGRAM_STREAM_TAGS, stream_tags);
+    SET_DO_SHOW(PACKET_TAGS, packet_tags);
+
+    if (do_bitexact && (do_show_program_version || do_show_library_versions)) {
+        av_log(NULL, AV_LOG_ERROR,
+               "-bitexact and -show_program_version or -show_library_versions "
+               "options are incompatible\n");
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+
+    writer_register_all();
+
+    if (!print_format)
+        print_format = av_strdup("default");
+    if (!print_format) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    w_name = av_strtok(print_format, "=", &buf);
+    if (!w_name) {
+        av_log(NULL, AV_LOG_ERROR,
+               "No name specified for the output format\n");
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+    w_args = buf;
+
+    if (show_data_hash) {
+        if ((ret = av_hash_alloc(&hash, show_data_hash)) < 0) {
+            if (ret == AVERROR(EINVAL)) {
+                const char *n;
+                av_log(NULL, AV_LOG_ERROR,
+                       "Unknown hash algorithm '%s'\nKnown algorithms:",
+                       show_data_hash);
+                for (i = 0; (n = av_hash_names(i)); i++)
+                    av_log(NULL, AV_LOG_ERROR, " %s", n);
+                av_log(NULL, AV_LOG_ERROR, "\n");
+            }
+            goto end;
+        }
+    }
+
+    w = writer_get_by_name(w_name);
+    if (!w) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+
+    if ((ret = writer_open(&wctx, w, w_args,
+                           sections, FF_ARRAY_ELEMS(sections))) >= 0) {
+        if (w == &xml_writer)
+            wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;
+
+        writer_print_section_header(wctx, SECTION_ID_ROOT);
+
+        if (do_show_program_version)
+            ffprobe_show_program_version(wctx);
+        if (do_show_library_versions)
+            ffprobe_show_library_versions(wctx);
+        if (do_show_pixel_formats)
+            ffprobe_show_pixel_formats(wctx);
+
+        if (!input_filename &&
+            ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||
+             (!do_show_program_version && !do_show_library_versions && !do_show_pixel_formats))) {
+            show_usage();
+            av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
+            av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
+            ret = AVERROR(EINVAL);
+        } else if (input_filename) {
+            ret = probe_file(wctx, input_filename);
+            if (ret < 0 && do_show_error)
+                show_error(wctx, ret);
+        }
+
+        writer_print_section_footer(wctx);
+        writer_close(&wctx);
+    }
+
+end:
+    av_freep(&print_format);
+    av_freep(&read_intervals);
+    av_hash_freep(&hash);
+
+    uninit_opts();
+    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
+        av_dict_free(&(sections[i].entries_to_show));
+
+    avformat_network_deinit();
+
+    return ret < 0;
+}
diff --git a/fftools/ffserver.c b/fftools/ffserver.c
new file mode 100644
index 0000000000..d4885dfa0e
--- /dev/null
+++ b/fftools/ffserver.c
@@ -0,0 +1,4026 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * multiple format streaming server based on the FFmpeg libraries
+ */
+
+#include "config.h"
+#if !HAVE_CLOSESOCKET
+#define closesocket close
+#endif
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "libavformat/avformat.h"
+/* FIXME: those are internal headers, ffserver _really_ shouldn't use them */
+#include "libavformat/rtpproto.h"
+#include "libavformat/rtsp.h"
+#include "libavformat/avio_internal.h"
+#include "libavformat/internal.h"
+
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/lfg.h"
+#include "libavutil/dict.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/random_seed.h"
+#include "libavutil/rational.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/opt.h"
+#include "libavutil/time.h"
+
+#include <stdarg.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#if HAVE_POLL_H
+#include <poll.h>
+#endif
+#include <errno.h>
+#include <time.h>
+#include <sys/wait.h>
+#include <signal.h>
+
+#include "cmdutils.h"
+#include "ffserver_config.h"
+
+#define PATH_LENGTH 1024
+
+const char program_name[] = "ffserver";
+const int program_birth_year = 2000;
+
+static const OptionDef options[];
+
+enum HTTPState {
+    HTTPSTATE_WAIT_REQUEST,
+    HTTPSTATE_SEND_HEADER,
+    HTTPSTATE_SEND_DATA_HEADER,
+    HTTPSTATE_SEND_DATA,          /* sending TCP or UDP data */
+    HTTPSTATE_SEND_DATA_TRAILER,
+    HTTPSTATE_RECEIVE_DATA,
+    HTTPSTATE_WAIT_FEED,          /* wait for data from the feed */
+    HTTPSTATE_READY,
+
+    RTSPSTATE_WAIT_REQUEST,
+    RTSPSTATE_SEND_REPLY,
+    RTSPSTATE_SEND_PACKET,
+};
+
+static const char * const http_state[] = {
+    "HTTP_WAIT_REQUEST",
+    "HTTP_SEND_HEADER",
+
+    "SEND_DATA_HEADER",
+    "SEND_DATA",
+    "SEND_DATA_TRAILER",
+    "RECEIVE_DATA",
+    "WAIT_FEED",
+    "READY",
+
+    "RTSP_WAIT_REQUEST",
+    "RTSP_SEND_REPLY",
+    "RTSP_SEND_PACKET",
+};
+
+#define IOBUFFER_INIT_SIZE 8192
+
+/* timeouts are in ms */
+#define HTTP_REQUEST_TIMEOUT (15 * 1000)
+#define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000)
+
+#define SYNC_TIMEOUT (10 * 1000)
+
+typedef struct RTSPActionServerSetup {
+    uint32_t ipaddr;
+    char transport_option[512];
+} RTSPActionServerSetup;
+
+typedef struct {
+    int64_t count1, count2;
+    int64_t time1, time2;
+} DataRateData;
+
+/* context associated with one connection */
+typedef struct HTTPContext {
+    enum HTTPState state;
+    int fd; /* socket file descriptor */
+    struct sockaddr_in from_addr; /* origin */
+    struct pollfd *poll_entry; /* used when polling */
+    int64_t timeout;
+    uint8_t *buffer_ptr, *buffer_end;
+    int http_error;
+    int post;
+    int chunked_encoding;
+    int chunk_size;               /* 0 if it needs to be read */
+    struct HTTPContext *next;
+    int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
+    int64_t data_count;
+    /* feed input */
+    int feed_fd;
+    /* input format handling */
+    AVFormatContext *fmt_in;
+    int64_t start_time;            /* In milliseconds - this wraps fairly often */
+    int64_t first_pts;            /* initial pts value */
+    int64_t cur_pts;             /* current pts value from the stream in us */
+    int64_t cur_frame_duration;  /* duration of the current frame in us */
+    int cur_frame_bytes;       /* output frame size, needed to compute
+                                  the time at which we send each
+                                  packet */
+    int pts_stream_index;        /* stream we choose as clock reference */
+    int64_t cur_clock;           /* current clock reference value in us */
+    /* output format handling */
+    struct FFServerStream *stream;
+    /* -1 is invalid stream */
+    int feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */
+    int switch_feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */
+    int switch_pending;
+    AVFormatContext *pfmt_ctx; /* instance of FFServerStream for one user */
+    int last_packet_sent; /* true if last data packet was sent */
+    int suppress_log;
+    DataRateData datarate;
+    int wmp_client_id;
+    char protocol[16];
+    char method[16];
+    char url[128];
+    char clean_url[128*7];
+    int buffer_size;
+    uint8_t *buffer;
+    int is_packetized; /* if true, the stream is packetized */
+    int packet_stream_index; /* current stream for output in state machine */
+
+    /* RTSP state specific */
+    uint8_t *pb_buffer; /* XXX: use that in all the code */
+    AVIOContext *pb;
+    int seq; /* RTSP sequence number */
+
+    /* RTP state specific */
+    enum RTSPLowerTransport rtp_protocol;
+    char session_id[32]; /* session id */
+    AVFormatContext *rtp_ctx[FFSERVER_MAX_STREAMS];
+
+    /* RTP/UDP specific */
+    URLContext *rtp_handles[FFSERVER_MAX_STREAMS];
+
+    /* RTP/TCP specific */
+    struct HTTPContext *rtsp_c;
+    uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end;
+} HTTPContext;
+
+static HTTPContext *first_http_ctx;
+
+static FFServerConfig config = {
+    .nb_max_http_connections = 2000,
+    .nb_max_connections = 5,
+    .max_bandwidth = 1000,
+    .use_defaults = 1,
+};
+
+static void new_connection(int server_fd, int is_rtsp);
+static void close_connection(HTTPContext *c);
+
+/* HTTP handling */
+static int handle_connection(HTTPContext *c);
+static inline void print_stream_params(AVIOContext *pb, FFServerStream *stream);
+static void compute_status(HTTPContext *c);
+static int open_input_stream(HTTPContext *c, const char *info);
+static int http_parse_request(HTTPContext *c);
+static int http_send_data(HTTPContext *c);
+static int http_start_receive_data(HTTPContext *c);
+static int http_receive_data(HTTPContext *c);
+
+/* RTSP handling */
+static int rtsp_parse_request(HTTPContext *c);
+static void rtsp_cmd_describe(HTTPContext *c, const char *url);
+static void rtsp_cmd_options(HTTPContext *c, const char *url);
+static void rtsp_cmd_setup(HTTPContext *c, const char *url,
+                           RTSPMessageHeader *h);
+static void rtsp_cmd_play(HTTPContext *c, const char *url,
+                          RTSPMessageHeader *h);
+static void rtsp_cmd_interrupt(HTTPContext *c, const char *url,
+                               RTSPMessageHeader *h, int pause_only);
+
+/* SDP handling */
+static int prepare_sdp_description(FFServerStream *stream, uint8_t **pbuffer,
+                                   struct in_addr my_ip);
+
+/* RTP handling */
+static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
+                                       FFServerStream *stream,
+                                       const char *session_id,
+                                       enum RTSPLowerTransport rtp_protocol);
+static int rtp_new_av_stream(HTTPContext *c,
+                             int stream_index, struct sockaddr_in *dest_addr,
+                             HTTPContext *rtsp_c);
+/* utils */
+static size_t htmlencode (const char *src, char **dest);
+static inline void cp_html_entity (char *buffer, const char *entity);
+static inline int check_codec_match(LayeredAVStream *ccf, AVStream *ccs, int stream);
+
+static const char *my_program_name;
+
+static int no_launch;
+static int need_to_start_children;
+
+/* maximum number of simultaneous HTTP connections */
+static unsigned int nb_connections;
+
+static uint64_t current_bandwidth;
+
+/* Making this global saves on passing it around everywhere */
+static int64_t cur_time;
+
+static AVLFG random_state;
+
+static FILE *logfile = NULL;
+
+static void unlayer_stream(AVStream *st, LayeredAVStream *lst)
+{
+    avcodec_free_context(&st->codec);
+    avcodec_parameters_free(&st->codecpar);
+#define COPY(a) st->a = lst->a;
+    COPY(index)
+    COPY(id)
+    COPY(codec)
+    COPY(codecpar)
+    COPY(time_base)
+    COPY(pts_wrap_bits)
+    COPY(sample_aspect_ratio)
+    COPY(recommended_encoder_configuration)
+}
+
+static inline void cp_html_entity (char *buffer, const char *entity) {
+    if (!buffer || !entity)
+        return;
+    while (*entity)
+        *buffer++ = *entity++;
+}
+
+/**
+ * Substitutes known conflicting chars on a text string with
+ * their corresponding HTML entities.
+ *
+ * Returns the number of bytes in the 'encoded' representation
+ * not including the terminating NUL.
+ */
+static size_t htmlencode (const char *src, char **dest) {
+    const char *amp = "&amp;";
+    const char *lt  = "&lt;";
+    const char *gt  = "&gt;";
+    const char *start;
+    char *tmp;
+    size_t final_size = 0;
+
+    if (!src)
+        return 0;
+
+    start = src;
+
+    /* Compute needed dest size */
+    while (*src != '\0') {
+        switch(*src) {
+            case 38: /* & */
+                final_size += 5;
+                break;
+            case 60: /* < */
+            case 62: /* > */
+                final_size += 4;
+                break;
+            default:
+                final_size++;
+        }
+        src++;
+    }
+
+    src = start;
+    *dest = av_mallocz(final_size + 1);
+    if (!*dest)
+        return 0;
+
+    /* Build dest */
+    tmp = *dest;
+    while (*src != '\0') {
+        switch(*src) {
+            case 38: /* & */
+                cp_html_entity (tmp, amp);
+                tmp += 5;
+                break;
+            case 60: /* < */
+                cp_html_entity (tmp, lt);
+                tmp += 4;
+                break;
+            case 62: /* > */
+                cp_html_entity (tmp, gt);
+                tmp += 4;
+                break;
+            default:
+                *tmp = *src;
+                tmp += 1;
+        }
+        src++;
+    }
+    *tmp = '\0';
+
+    return final_size;
+}
+
+static int64_t ffm_read_write_index(int fd)
+{
+    uint8_t buf[8];
+
+    if (lseek(fd, 8, SEEK_SET) < 0)
+        return AVERROR(EIO);
+    if (read(fd, buf, 8) != 8)
+        return AVERROR(EIO);
+    return AV_RB64(buf);
+}
+
+static int ffm_write_write_index(int fd, int64_t pos)
+{
+    uint8_t buf[8];
+    int i;
+
+    for(i=0;i<8;i++)
+        buf[i] = (pos >> (56 - i * 8)) & 0xff;
+    if (lseek(fd, 8, SEEK_SET) < 0)
+        goto bail_eio;
+    if (write(fd, buf, 8) != 8)
+        goto bail_eio;
+
+    return 8;
+
+bail_eio:
+    return AVERROR(EIO);
+}
+
+static void ffm_set_write_index(AVFormatContext *s, int64_t pos,
+                                int64_t file_size)
+{
+    av_opt_set_int(s, "server_attached", 1, AV_OPT_SEARCH_CHILDREN);
+    av_opt_set_int(s, "ffm_write_index", pos, AV_OPT_SEARCH_CHILDREN);
+    av_opt_set_int(s, "ffm_file_size", file_size, AV_OPT_SEARCH_CHILDREN);
+}
+
+static char *ctime1(char *buf2, size_t buf_size)
+{
+    time_t ti;
+    char *p;
+
+    ti = time(NULL);
+    p = ctime(&ti);
+    if (!p || !*p) {
+        *buf2 = '\0';
+        return buf2;
+    }
+    av_strlcpy(buf2, p, buf_size);
+    p = buf2 + strlen(buf2) - 1;
+    if (*p == '\n')
+        *p = '\0';
+    return buf2;
+}
+
+static void http_vlog(const char *fmt, va_list vargs)
+{
+    static int print_prefix = 1;
+    char buf[32];
+
+    if (!logfile)
+        return;
+
+    if (print_prefix) {
+        ctime1(buf, sizeof(buf));
+        fprintf(logfile, "%s ", buf);
+    }
+    print_prefix = strstr(fmt, "\n") != NULL;
+    vfprintf(logfile, fmt, vargs);
+    fflush(logfile);
+}
+
+#ifdef __GNUC__
+__attribute__ ((format (printf, 1, 2)))
+#endif
+static void http_log(const char *fmt, ...)
+{
+    va_list vargs;
+    va_start(vargs, fmt);
+    http_vlog(fmt, vargs);
+    va_end(vargs);
+}
+
+static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs)
+{
+    static int print_prefix = 1;
+    AVClass *avc = ptr ? *(AVClass**)ptr : NULL;
+    if (level > av_log_get_level())
+        return;
+    if (print_prefix && avc)
+        http_log("[%s @ %p]", avc->item_name(ptr), ptr);
+    print_prefix = strstr(fmt, "\n") != NULL;
+    http_vlog(fmt, vargs);
+}
+
+static void log_connection(HTTPContext *c)
+{
+    if (c->suppress_log)
+        return;
+
+    http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n",
+             inet_ntoa(c->from_addr.sin_addr), c->method, c->url,
+             c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
+}
+
+static void update_datarate(DataRateData *drd, int64_t count)
+{
+    if (!drd->time1 && !drd->count1) {
+        drd->time1 = drd->time2 = cur_time;
+        drd->count1 = drd->count2 = count;
+    } else if (cur_time - drd->time2 > 5000) {
+        drd->time1 = drd->time2;
+        drd->count1 = drd->count2;
+        drd->time2 = cur_time;
+        drd->count2 = count;
+    }
+}
+
+/* In bytes per second */
+static int compute_datarate(DataRateData *drd, int64_t count)
+{
+    if (cur_time == drd->time1)
+        return 0;
+
+    return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
+}
+
+
+static void start_children(FFServerStream *feed)
+{
+    char *pathname;
+    char *slash;
+    int i;
+    size_t cmd_length;
+
+    if (no_launch)
+        return;
+
+    cmd_length = strlen(my_program_name);
+
+   /**
+    * FIXME: WIP Safeguard. Remove after clearing all harcoded
+    * '1024' path lengths
+    */
+    if (cmd_length > PATH_LENGTH - 1) {
+        http_log("Could not start children. Command line: '%s' exceeds "
+                    "path length limit (%d)\n", my_program_name, PATH_LENGTH);
+        return;
+    }
+
+    slash = strrchr(my_program_name, '/');
+    if (!slash) {
+        pathname = av_mallocz(sizeof("ffmpeg"));
+    } else {
+        pathname = av_mallocz(slash - my_program_name + sizeof("ffmpeg"));
+        if (pathname != NULL) {
+            memcpy(pathname, my_program_name, slash - my_program_name);
+        }
+    }
+    if (!pathname) {
+        http_log("Could not allocate memory for children cmd line\n");
+        return;
+    }
+   /* use "ffmpeg" in the path of current program. Ignore user provided path */
+
+    strcat(pathname, "ffmpeg");
+
+    for (; feed; feed = feed->next) {
+
+        if (!feed->child_argv || feed->pid)
+            continue;
+
+        feed->pid_start = time(0);
+
+        feed->pid = fork();
+        if (feed->pid < 0) {
+            http_log("Unable to create children: %s\n", strerror(errno));
+            av_free (pathname);
+            exit(EXIT_FAILURE);
+        }
+
+        if (feed->pid)
+            continue;
+
+        /* In child */
+
+        http_log("Launch command line: ");
+        http_log("%s ", pathname);
+
+        for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++)
+            http_log("%s ", feed->child_argv[i]);
+        http_log("\n");
+
+        for (i = 3; i < 256; i++)
+            close(i);
+
+        if (!config.debug) {
+            if (!freopen("/dev/null", "r", stdin))
+                http_log("failed to redirect STDIN to /dev/null\n;");
+            if (!freopen("/dev/null", "w", stdout))
+                http_log("failed to redirect STDOUT to /dev/null\n;");
+            if (!freopen("/dev/null", "w", stderr))
+                http_log("failed to redirect STDERR to /dev/null\n;");
+        }
+
+        signal(SIGPIPE, SIG_DFL);
+        execvp(pathname, feed->child_argv);
+        av_free (pathname);
+        _exit(1);
+    }
+    av_free (pathname);
+}
+
+/* open a listening socket */
+static int socket_open_listen(struct sockaddr_in *my_addr)
+{
+    int server_fd, tmp;
+
+    server_fd = socket(AF_INET,SOCK_STREAM,0);
+    if (server_fd < 0) {
+        perror ("socket");
+        return -1;
+    }
+
+    tmp = 1;
+    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp)))
+        av_log(NULL, AV_LOG_WARNING, "setsockopt SO_REUSEADDR failed\n");
+
+    my_addr->sin_family = AF_INET;
+    if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
+        char bindmsg[32];
+        snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)",
+                 ntohs(my_addr->sin_port));
+        perror (bindmsg);
+        goto fail;
+    }
+
+    if (listen (server_fd, 5) < 0) {
+        perror ("listen");
+        goto fail;
+    }
+
+    if (ff_socket_nonblock(server_fd, 1) < 0)
+        av_log(NULL, AV_LOG_WARNING, "ff_socket_nonblock failed\n");
+
+    return server_fd;
+
+fail:
+    closesocket(server_fd);
+    return -1;
+}
+
+/* start all multicast streams */
+static void start_multicast(void)
+{
+    FFServerStream *stream;
+    char session_id[32];
+    HTTPContext *rtp_c;
+    struct sockaddr_in dest_addr = {0};
+    int default_port, stream_index;
+    unsigned int random0, random1;
+
+    default_port = 6000;
+    for(stream = config.first_stream; stream; stream = stream->next) {
+
+        if (!stream->is_multicast)
+            continue;
+
+        random0 = av_lfg_get(&random_state);
+        random1 = av_lfg_get(&random_state);
+
+        /* open the RTP connection */
+        snprintf(session_id, sizeof(session_id), "%08x%08x", random0, random1);
+
+        /* choose a port if none given */
+        if (stream->multicast_port == 0) {
+            stream->multicast_port = default_port;
+            default_port += 100;
+        }
+
+        dest_addr.sin_family = AF_INET;
+        dest_addr.sin_addr = stream->multicast_ip;
+        dest_addr.sin_port = htons(stream->multicast_port);
+
+        rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
+                                   RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
+        if (!rtp_c)
+            continue;
+
+        if (open_input_stream(rtp_c, "") < 0) {
+            http_log("Could not open input stream for stream '%s'\n",
+                     stream->filename);
+            continue;
+        }
+
+        /* open each RTP stream */
+        for(stream_index = 0; stream_index < stream->nb_streams;
+            stream_index++) {
+            dest_addr.sin_port = htons(stream->multicast_port +
+                                       2 * stream_index);
+            if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) >= 0)
+                continue;
+
+            http_log("Could not open output stream '%s/streamid=%d'\n",
+                     stream->filename, stream_index);
+            exit(1);
+        }
+
+        rtp_c->state = HTTPSTATE_SEND_DATA;
+    }
+}
+
+/* main loop of the HTTP server */
+static int http_server(void)
+{
+    int server_fd = 0, rtsp_server_fd = 0;
+    int ret, delay;
+    struct pollfd *poll_table, *poll_entry;
+    HTTPContext *c, *c_next;
+
+    poll_table = av_mallocz_array(config.nb_max_http_connections + 2,
+                                  sizeof(*poll_table));
+    if(!poll_table) {
+        http_log("Impossible to allocate a poll table handling %d "
+                 "connections.\n", config.nb_max_http_connections);
+        return -1;
+    }
+
+    if (config.http_addr.sin_port) {
+        server_fd = socket_open_listen(&config.http_addr);
+        if (server_fd < 0)
+            goto quit;
+    }
+
+    if (config.rtsp_addr.sin_port) {
+        rtsp_server_fd = socket_open_listen(&config.rtsp_addr);
+        if (rtsp_server_fd < 0) {
+            closesocket(server_fd);
+            goto quit;
+        }
+    }
+
+    if (!rtsp_server_fd && !server_fd) {
+        http_log("HTTP and RTSP disabled.\n");
+        goto quit;
+    }
+
+    http_log("FFserver started.\n");
+
+    start_children(config.first_feed);
+
+    start_multicast();
+
+    for(;;) {
+        poll_entry = poll_table;
+        if (server_fd) {
+            poll_entry->fd = server_fd;
+            poll_entry->events = POLLIN;
+            poll_entry++;
+        }
+        if (rtsp_server_fd) {
+            poll_entry->fd = rtsp_server_fd;
+            poll_entry->events = POLLIN;
+            poll_entry++;
+        }
+
+        /* wait for events on each HTTP handle */
+        c = first_http_ctx;
+        delay = 1000;
+        while (c) {
+            int fd;
+            fd = c->fd;
+            switch(c->state) {
+            case HTTPSTATE_SEND_HEADER:
+            case RTSPSTATE_SEND_REPLY:
+            case RTSPSTATE_SEND_PACKET:
+                c->poll_entry = poll_entry;
+                poll_entry->fd = fd;
+                poll_entry->events = POLLOUT;
+                poll_entry++;
+                break;
+            case HTTPSTATE_SEND_DATA_HEADER:
+            case HTTPSTATE_SEND_DATA:
+            case HTTPSTATE_SEND_DATA_TRAILER:
+                if (!c->is_packetized) {
+                    /* for TCP, we output as much as we can
+                     * (may need to put a limit) */
+                    c->poll_entry = poll_entry;
+                    poll_entry->fd = fd;
+                    poll_entry->events = POLLOUT;
+                    poll_entry++;
+                } else {
+                    /* when ffserver is doing the timing, we work by
+                     * looking at which packet needs to be sent every
+                     * 10 ms (one tick wait XXX: 10 ms assumed) */
+                    if (delay > 10)
+                        delay = 10;
+                }
+                break;
+            case HTTPSTATE_WAIT_REQUEST:
+            case HTTPSTATE_RECEIVE_DATA:
+            case HTTPSTATE_WAIT_FEED:
+            case RTSPSTATE_WAIT_REQUEST:
+                /* need to catch errors */
+                c->poll_entry = poll_entry;
+                poll_entry->fd = fd;
+                poll_entry->events = POLLIN;/* Maybe this will work */
+                poll_entry++;
+                break;
+            default:
+                c->poll_entry = NULL;
+                break;
+            }
+            c = c->next;
+        }
+
+        /* wait for an event on one connection. We poll at least every
+         * second to handle timeouts */
+        do {
+            ret = poll(poll_table, poll_entry - poll_table, delay);
+            if (ret < 0 && ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR)) {
+                goto quit;
+            }
+        } while (ret < 0);
+
+        cur_time = av_gettime() / 1000;
+
+        if (need_to_start_children) {
+            need_to_start_children = 0;
+            start_children(config.first_feed);
+        }
+
+        /* now handle the events */
+        for(c = first_http_ctx; c; c = c_next) {
+            c_next = c->next;
+            if (handle_connection(c) < 0) {
+                log_connection(c);
+                /* close and free the connection */
+                close_connection(c);
+            }
+        }
+
+        poll_entry = poll_table;
+        if (server_fd) {
+            /* new HTTP connection request ? */
+            if (poll_entry->revents & POLLIN)
+                new_connection(server_fd, 0);
+            poll_entry++;
+        }
+        if (rtsp_server_fd) {
+            /* new RTSP connection request ? */
+            if (poll_entry->revents & POLLIN)
+                new_connection(rtsp_server_fd, 1);
+        }
+    }
+
+quit:
+    av_free(poll_table);
+    return -1;
+}
+
+/* start waiting for a new HTTP/RTSP request */
+static void start_wait_request(HTTPContext *c, int is_rtsp)
+{
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
+
+    c->state = is_rtsp ? RTSPSTATE_WAIT_REQUEST : HTTPSTATE_WAIT_REQUEST;
+    c->timeout = cur_time +
+                 (is_rtsp ? RTSP_REQUEST_TIMEOUT : HTTP_REQUEST_TIMEOUT);
+}
+
+static void http_send_too_busy_reply(int fd)
+{
+    char buffer[400];
+    int len = snprintf(buffer, sizeof(buffer),
+                       "HTTP/1.0 503 Server too busy\r\n"
+                       "Content-type: text/html\r\n"
+                       "\r\n"
+                       "<!DOCTYPE html>\n"
+                       "<html><head><title>Too busy</title></head><body>\r\n"
+                       "<p>The server is too busy to serve your request at "
+                       "this time.</p>\r\n"
+                       "<p>The number of current connections is %u, and this "
+                       "exceeds the limit of %u.</p>\r\n"
+                       "</body></html>\r\n",
+                       nb_connections, config.nb_max_connections);
+    av_assert0(len < sizeof(buffer));
+    if (send(fd, buffer, len, 0) < len)
+        av_log(NULL, AV_LOG_WARNING,
+               "Could not send too-busy reply, send() failed\n");
+}
+
+
+static void new_connection(int server_fd, int is_rtsp)
+{
+    struct sockaddr_in from_addr;
+    socklen_t len;
+    int fd;
+    HTTPContext *c = NULL;
+
+    len = sizeof(from_addr);
+    fd = accept(server_fd, (struct sockaddr *)&from_addr,
+                &len);
+    if (fd < 0) {
+        http_log("error during accept %s\n", strerror(errno));
+        return;
+    }
+    if (ff_socket_nonblock(fd, 1) < 0)
+        av_log(NULL, AV_LOG_WARNING, "ff_socket_nonblock failed\n");
+
+    if (nb_connections >= config.nb_max_connections) {
+        http_send_too_busy_reply(fd);
+        goto fail;
+    }
+
+    /* add a new connection */
+    c = av_mallocz(sizeof(HTTPContext));
+    if (!c)
+        goto fail;
+
+    c->fd = fd;
+    c->poll_entry = NULL;
+    c->from_addr = from_addr;
+    c->buffer_size = IOBUFFER_INIT_SIZE;
+    c->buffer = av_malloc(c->buffer_size);
+    if (!c->buffer)
+        goto fail;
+
+    c->next = first_http_ctx;
+    first_http_ctx = c;
+    nb_connections++;
+
+    start_wait_request(c, is_rtsp);
+
+    return;
+
+ fail:
+    if (c) {
+        av_freep(&c->buffer);
+        av_free(c);
+    }
+    closesocket(fd);
+}
+
+static void close_connection(HTTPContext *c)
+{
+    HTTPContext **cp, *c1;
+    int i, nb_streams;
+    AVFormatContext *ctx;
+    AVStream *st;
+
+    /* remove connection from list */
+    cp = &first_http_ctx;
+    while (*cp) {
+        c1 = *cp;
+        if (c1 == c)
+            *cp = c->next;
+        else
+            cp = &c1->next;
+    }
+
+    /* remove references, if any (XXX: do it faster) */
+    for(c1 = first_http_ctx; c1; c1 = c1->next) {
+        if (c1->rtsp_c == c)
+            c1->rtsp_c = NULL;
+    }
+
+    /* remove connection associated resources */
+    if (c->fd >= 0)
+        closesocket(c->fd);
+    if (c->fmt_in) {
+        /* close each frame parser */
+        for(i=0;i<c->fmt_in->nb_streams;i++) {
+            st = c->fmt_in->streams[i];
+            if (st->codec->codec)
+                avcodec_close(st->codec);
+        }
+        avformat_close_input(&c->fmt_in);
+    }
+
+    /* free RTP output streams if any */
+    nb_streams = 0;
+    if (c->stream)
+        nb_streams = c->stream->nb_streams;
+
+    for(i=0;i<nb_streams;i++) {
+        ctx = c->rtp_ctx[i];
+        if (ctx) {
+            av_write_trailer(ctx);
+            av_dict_free(&ctx->metadata);
+            av_freep(&ctx->streams[0]);
+            av_freep(&ctx);
+        }
+        ffurl_close(c->rtp_handles[i]);
+    }
+
+    ctx = c->pfmt_ctx;
+
+    if (ctx) {
+        if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) {
+            /* prepare header */
+            if (ctx->oformat && avio_open_dyn_buf(&ctx->pb) >= 0) {
+                av_write_trailer(ctx);
+                av_freep(&c->pb_buffer);
+                avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
+            }
+        }
+        for(i=0; i<ctx->nb_streams; i++)
+            av_freep(&ctx->streams[i]);
+        av_freep(&ctx->streams);
+        av_freep(&ctx->priv_data);
+        }
+
+    if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
+        current_bandwidth -= c->stream->bandwidth;
+
+    /* signal that there is no feed if we are the feeder socket */
+    if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
+        c->stream->feed_opened = 0;
+        close(c->feed_fd);
+    }
+
+    av_freep(&c->pb_buffer);
+    av_freep(&c->packet_buffer);
+    av_freep(&c->buffer);
+    av_free(c);
+    nb_connections--;
+}
+
+static int handle_connection(HTTPContext *c)
+{
+    int len, ret;
+    uint8_t *ptr;
+
+    switch(c->state) {
+    case HTTPSTATE_WAIT_REQUEST:
+    case RTSPSTATE_WAIT_REQUEST:
+        /* timeout ? */
+        if ((c->timeout - cur_time) < 0)
+            return -1;
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            return -1;
+
+        /* no need to read if no events */
+        if (!(c->poll_entry->revents & POLLIN))
+            return 0;
+        /* read the data */
+    read_loop:
+        if (!(len = recv(c->fd, c->buffer_ptr, 1, 0)))
+            return -1;
+
+        if (len < 0) {
+            if (ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR))
+                return -1;
+            break;
+        }
+        /* search for end of request. */
+        c->buffer_ptr += len;
+        ptr = c->buffer_ptr;
+        if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
+            (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
+            /* request found : parse it and reply */
+            if (c->state == HTTPSTATE_WAIT_REQUEST)
+                ret = http_parse_request(c);
+            else
+                ret = rtsp_parse_request(c);
+
+            if (ret < 0)
+                return -1;
+        } else if (ptr >= c->buffer_end) {
+            /* request too long: cannot do anything */
+            return -1;
+        } else goto read_loop;
+
+        break;
+
+    case HTTPSTATE_SEND_HEADER:
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            return -1;
+
+        /* no need to write if no events */
+        if (!(c->poll_entry->revents & POLLOUT))
+            return 0;
+        len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
+        if (len < 0) {
+            if (ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR)) {
+                goto close_connection;
+            }
+            break;
+        }
+        c->buffer_ptr += len;
+        if (c->stream)
+            c->stream->bytes_served += len;
+        c->data_count += len;
+        if (c->buffer_ptr >= c->buffer_end) {
+            av_freep(&c->pb_buffer);
+            /* if error, exit */
+            if (c->http_error)
+                return -1;
+            /* all the buffer was sent : synchronize to the incoming
+             * stream */
+            c->state = HTTPSTATE_SEND_DATA_HEADER;
+            c->buffer_ptr = c->buffer_end = c->buffer;
+        }
+        break;
+
+    case HTTPSTATE_SEND_DATA:
+    case HTTPSTATE_SEND_DATA_HEADER:
+    case HTTPSTATE_SEND_DATA_TRAILER:
+        /* for packetized output, we consider we can always write (the
+         * input streams set the speed). It may be better to verify
+         * that we do not rely too much on the kernel queues */
+        if (!c->is_packetized) {
+            if (c->poll_entry->revents & (POLLERR | POLLHUP))
+                return -1;
+
+            /* no need to read if no events */
+            if (!(c->poll_entry->revents & POLLOUT))
+                return 0;
+        }
+        if (http_send_data(c) < 0)
+            return -1;
+        /* close connection if trailer sent */
+        if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
+            return -1;
+        /* Check if it is a single jpeg frame 123 */
+        if (c->stream->single_frame && c->data_count > c->cur_frame_bytes && c->cur_frame_bytes > 0) {
+            close_connection(c);
+        }
+        break;
+    case HTTPSTATE_RECEIVE_DATA:
+        /* no need to read if no events */
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            return -1;
+        if (!(c->poll_entry->revents & POLLIN))
+            return 0;
+        if (http_receive_data(c) < 0)
+            return -1;
+        break;
+    case HTTPSTATE_WAIT_FEED:
+        /* no need to read if no events */
+        if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
+            return -1;
+
+        /* nothing to do, we'll be waken up by incoming feed packets */
+        break;
+
+    case RTSPSTATE_SEND_REPLY:
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            goto close_connection;
+        /* no need to write if no events */
+        if (!(c->poll_entry->revents & POLLOUT))
+            return 0;
+        len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
+        if (len < 0) {
+            if (ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR)) {
+                goto close_connection;
+            }
+            break;
+        }
+        c->buffer_ptr += len;
+        c->data_count += len;
+        if (c->buffer_ptr >= c->buffer_end) {
+            /* all the buffer was sent : wait for a new request */
+            av_freep(&c->pb_buffer);
+            start_wait_request(c, 1);
+        }
+        break;
+    case RTSPSTATE_SEND_PACKET:
+        if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
+            av_freep(&c->packet_buffer);
+            return -1;
+        }
+        /* no need to write if no events */
+        if (!(c->poll_entry->revents & POLLOUT))
+            return 0;
+        len = send(c->fd, c->packet_buffer_ptr,
+                    c->packet_buffer_end - c->packet_buffer_ptr, 0);
+        if (len < 0) {
+            if (ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR)) {
+                /* error : close connection */
+                av_freep(&c->packet_buffer);
+                return -1;
+            }
+            break;
+        }
+        c->packet_buffer_ptr += len;
+        if (c->packet_buffer_ptr >= c->packet_buffer_end) {
+            /* all the buffer was sent : wait for a new request */
+            av_freep(&c->packet_buffer);
+            c->state = RTSPSTATE_WAIT_REQUEST;
+        }
+        break;
+    case HTTPSTATE_READY:
+        /* nothing to do */
+        break;
+    default:
+        return -1;
+    }
+    return 0;
+
+close_connection:
+    av_freep(&c->pb_buffer);
+    return -1;
+}
+
+static int extract_rates(char *rates, int ratelen, const char *request)
+{
+    const char *p;
+
+    for (p = request; *p && *p != '\r' && *p != '\n'; ) {
+        if (av_strncasecmp(p, "Pragma:", 7) == 0) {
+            const char *q = p + 7;
+
+            while (*q && *q != '\n' && av_isspace(*q))
+                q++;
+
+            if (av_strncasecmp(q, "stream-switch-entry=", 20) == 0) {
+                int stream_no;
+                int rate_no;
+
+                q += 20;
+
+                memset(rates, 0xff, ratelen);
+
+                while (1) {
+                    while (*q && *q != '\n' && *q != ':')
+                        q++;
+
+                    if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
+                        break;
+
+                    stream_no--;
+                    if (stream_no < ratelen && stream_no >= 0)
+                        rates[stream_no] = rate_no;
+
+                    while (*q && *q != '\n' && !av_isspace(*q))
+                        q++;
+                }
+
+                return 1;
+            }
+        }
+        p = strchr(p, '\n');
+        if (!p)
+            break;
+
+        p++;
+    }
+
+    return 0;
+}
+
+static int find_stream_in_feed(FFServerStream *feed, AVCodecParameters *codec,
+                               int bit_rate)
+{
+    int i;
+    int best_bitrate = 100000000;
+    int best = -1;
+
+    for (i = 0; i < feed->nb_streams; i++) {
+        AVCodecParameters *feed_codec = feed->streams[i]->codecpar;
+
+        if (feed_codec->codec_id != codec->codec_id ||
+            feed_codec->sample_rate != codec->sample_rate ||
+            feed_codec->width != codec->width ||
+            feed_codec->height != codec->height)
+            continue;
+
+        /* Potential stream */
+
+        /* We want the fastest stream less than bit_rate, or the slowest
+         * faster than bit_rate
+         */
+
+        if (feed_codec->bit_rate <= bit_rate) {
+            if (best_bitrate > bit_rate ||
+                feed_codec->bit_rate > best_bitrate) {
+                best_bitrate = feed_codec->bit_rate;
+                best = i;
+            }
+            continue;
+        }
+        if (feed_codec->bit_rate < best_bitrate) {
+            best_bitrate = feed_codec->bit_rate;
+            best = i;
+        }
+    }
+    return best;
+}
+
+static int modify_current_stream(HTTPContext *c, char *rates)
+{
+    int i;
+    FFServerStream *req = c->stream;
+    int action_required = 0;
+
+    /* Not much we can do for a feed */
+    if (!req->feed)
+        return 0;
+
+    for (i = 0; i < req->nb_streams; i++) {
+        AVCodecParameters *codec = req->streams[i]->codecpar;
+
+        switch(rates[i]) {
+            case 0:
+                c->switch_feed_streams[i] = req->feed_streams[i];
+                break;
+            case 1:
+                c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
+                break;
+            case 2:
+                /* Wants off or slow */
+                c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
+#ifdef WANTS_OFF
+                /* This doesn't work well when it turns off the only stream! */
+                c->switch_feed_streams[i] = -2;
+                c->feed_streams[i] = -2;
+#endif
+                break;
+        }
+
+        if (c->switch_feed_streams[i] >= 0 &&
+            c->switch_feed_streams[i] != c->feed_streams[i]) {
+            action_required = 1;
+        }
+    }
+
+    return action_required;
+}
+
+static void get_word(char *buf, int buf_size, const char **pp)
+{
+    const char *p;
+    char *q;
+
+#define SPACE_CHARS " \t\r\n"
+
+    p = *pp;
+    p += strspn(p, SPACE_CHARS);
+    q = buf;
+    while (!av_isspace(*p) && *p != '\0') {
+        if ((q - buf) < buf_size - 1)
+            *q++ = *p;
+        p++;
+    }
+    if (buf_size > 0)
+        *q = '\0';
+    *pp = p;
+}
+
+static FFServerIPAddressACL* parse_dynamic_acl(FFServerStream *stream,
+                                               HTTPContext *c)
+{
+    FILE* f;
+    char line[1024];
+    char  cmd[1024];
+    FFServerIPAddressACL *acl = NULL;
+    int line_num = 0;
+    const char *p;
+
+    f = fopen(stream->dynamic_acl, "r");
+    if (!f) {
+        perror(stream->dynamic_acl);
+        return NULL;
+    }
+
+    acl = av_mallocz(sizeof(FFServerIPAddressACL));
+    if (!acl) {
+        fclose(f);
+        return NULL;
+    }
+
+    /* Build ACL */
+    while (fgets(line, sizeof(line), f)) {
+        line_num++;
+        p = line;
+        while (av_isspace(*p))
+            p++;
+        if (*p == '\0' || *p == '#')
+            continue;
+        ffserver_get_arg(cmd, sizeof(cmd), &p);
+
+        if (!av_strcasecmp(cmd, "ACL"))
+            ffserver_parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl,
+                                   line_num);
+    }
+    fclose(f);
+    return acl;
+}
+
+
+static void free_acl_list(FFServerIPAddressACL *in_acl)
+{
+    FFServerIPAddressACL *pacl, *pacl2;
+
+    pacl = in_acl;
+    while(pacl) {
+        pacl2 = pacl;
+        pacl = pacl->next;
+        av_freep(pacl2);
+    }
+}
+
+static int validate_acl_list(FFServerIPAddressACL *in_acl, HTTPContext *c)
+{
+    enum FFServerIPAddressAction last_action = IP_DENY;
+    FFServerIPAddressACL *acl;
+    struct in_addr *src = &c->from_addr.sin_addr;
+    unsigned long src_addr = src->s_addr;
+
+    for (acl = in_acl; acl; acl = acl->next) {
+        if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
+            return (acl->action == IP_ALLOW) ? 1 : 0;
+        last_action = acl->action;
+    }
+
+    /* Nothing matched, so return not the last action */
+    return (last_action == IP_DENY) ? 1 : 0;
+}
+
+static int validate_acl(FFServerStream *stream, HTTPContext *c)
+{
+    int ret = 0;
+    FFServerIPAddressACL *acl;
+
+    /* if stream->acl is null validate_acl_list will return 1 */
+    ret = validate_acl_list(stream->acl, c);
+
+    if (stream->dynamic_acl[0]) {
+        acl = parse_dynamic_acl(stream, c);
+        ret = validate_acl_list(acl, c);
+        free_acl_list(acl);
+    }
+
+    return ret;
+}
+
+/**
+ * compute the real filename of a file by matching it without its
+ * extensions to all the stream's filenames
+ */
+static void compute_real_filename(char *filename, int max_size)
+{
+    char file1[1024];
+    char file2[1024];
+    char *p;
+    FFServerStream *stream;
+
+    av_strlcpy(file1, filename, sizeof(file1));
+    p = strrchr(file1, '.');
+    if (p)
+        *p = '\0';
+    for(stream = config.first_stream; stream; stream = stream->next) {
+        av_strlcpy(file2, stream->filename, sizeof(file2));
+        p = strrchr(file2, '.');
+        if (p)
+            *p = '\0';
+        if (!strcmp(file1, file2)) {
+            av_strlcpy(filename, stream->filename, max_size);
+            break;
+        }
+    }
+}
+
+enum RedirType {
+    REDIR_NONE,
+    REDIR_ASX,
+    REDIR_RAM,
+    REDIR_ASF,
+    REDIR_RTSP,
+    REDIR_SDP,
+};
+
+/* parse HTTP request and prepare header */
+static int http_parse_request(HTTPContext *c)
+{
+    const char *p;
+    char *p1;
+    enum RedirType redir_type;
+    char cmd[32];
+    char info[1024], filename[1024];
+    char url[1024], *q;
+    char protocol[32];
+    char msg[1024];
+    char *encoded_msg = NULL;
+    const char *mime_type;
+    FFServerStream *stream;
+    int i;
+    char ratebuf[32];
+    const char *useragent = 0;
+
+    p = c->buffer;
+    get_word(cmd, sizeof(cmd), &p);
+    av_strlcpy(c->method, cmd, sizeof(c->method));
+
+    if (!strcmp(cmd, "GET"))
+        c->post = 0;
+    else if (!strcmp(cmd, "POST"))
+        c->post = 1;
+    else
+        return -1;
+
+    get_word(url, sizeof(url), &p);
+    av_strlcpy(c->url, url, sizeof(c->url));
+
+    get_word(protocol, sizeof(protocol), (const char **)&p);
+    if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
+        return -1;
+
+    av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
+
+    if (config.debug)
+        http_log("%s - - New connection: %s %s\n",
+                 inet_ntoa(c->from_addr.sin_addr), cmd, url);
+
+    /* find the filename and the optional info string in the request */
+    p1 = strchr(url, '?');
+    if (p1) {
+        av_strlcpy(info, p1, sizeof(info));
+        *p1 = '\0';
+    } else
+        info[0] = '\0';
+
+    av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
+
+    for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
+        if (av_strncasecmp(p, "User-Agent:", 11) == 0) {
+            useragent = p + 11;
+            if (*useragent && *useragent != '\n' && av_isspace(*useragent))
+                useragent++;
+            break;
+        }
+        p = strchr(p, '\n');
+        if (!p)
+            break;
+
+        p++;
+    }
+
+    redir_type = REDIR_NONE;
+    if (av_match_ext(filename, "asx")) {
+        redir_type = REDIR_ASX;
+        filename[strlen(filename)-1] = 'f';
+    } else if (av_match_ext(filename, "asf") &&
+        (!useragent || av_strncasecmp(useragent, "NSPlayer", 8))) {
+        /* if this isn't WMP or lookalike, return the redirector file */
+        redir_type = REDIR_ASF;
+    } else if (av_match_ext(filename, "rpm,ram")) {
+        redir_type = REDIR_RAM;
+        strcpy(filename + strlen(filename)-2, "m");
+    } else if (av_match_ext(filename, "rtsp")) {
+        redir_type = REDIR_RTSP;
+        compute_real_filename(filename, sizeof(filename) - 1);
+    } else if (av_match_ext(filename, "sdp")) {
+        redir_type = REDIR_SDP;
+        compute_real_filename(filename, sizeof(filename) - 1);
+    }
+
+    /* "redirect" request to index.html */
+    if (!strlen(filename))
+        av_strlcpy(filename, "index.html", sizeof(filename) - 1);
+
+    stream = config.first_stream;
+    while (stream) {
+        if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
+            break;
+        stream = stream->next;
+    }
+    if (!stream) {
+        snprintf(msg, sizeof(msg), "File '%s' not found", url);
+        http_log("File '%s' not found\n", url);
+        goto send_error;
+    }
+
+    c->stream = stream;
+    memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
+    memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
+
+    if (stream->stream_type == STREAM_TYPE_REDIRECT) {
+        c->http_error = 301;
+        q = c->buffer;
+        snprintf(q, c->buffer_size,
+                      "HTTP/1.0 301 Moved\r\n"
+                      "Location: %s\r\n"
+                      "Content-type: text/html\r\n"
+                      "\r\n"
+                      "<!DOCTYPE html>\n"
+                      "<html><head><title>Moved</title></head><body>\r\n"
+                      "You should be <a href=\"%s\">redirected</a>.\r\n"
+                      "</body></html>\r\n",
+                 stream->feed_filename, stream->feed_filename);
+        q += strlen(q);
+        /* prepare output buffer */
+        c->buffer_ptr = c->buffer;
+        c->buffer_end = q;
+        c->state = HTTPSTATE_SEND_HEADER;
+        return 0;
+    }
+
+    /* If this is WMP, get the rate information */
+    if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
+        if (modify_current_stream(c, ratebuf)) {
+            for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) {
+                if (c->switch_feed_streams[i] >= 0)
+                    c->switch_feed_streams[i] = -1;
+            }
+        }
+    }
+
+    if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
+        current_bandwidth += stream->bandwidth;
+
+    /* If already streaming this feed, do not let another feeder start */
+    if (stream->feed_opened) {
+        snprintf(msg, sizeof(msg), "This feed is already being received.");
+        http_log("Feed '%s' already being received\n", stream->feed_filename);
+        goto send_error;
+    }
+
+    if (c->post == 0 && config.max_bandwidth < current_bandwidth) {
+        c->http_error = 503;
+        q = c->buffer;
+        snprintf(q, c->buffer_size,
+                      "HTTP/1.0 503 Server too busy\r\n"
+                      "Content-type: text/html\r\n"
+                      "\r\n"
+                      "<!DOCTYPE html>\n"
+                      "<html><head><title>Too busy</title></head><body>\r\n"
+                      "<p>The server is too busy to serve your request at "
+                      "this time.</p>\r\n"
+                      "<p>The bandwidth being served (including your stream) "
+                      "is %"PRIu64"kbit/s, and this exceeds the limit of "
+                      "%"PRIu64"kbit/s.</p>\r\n"
+                      "</body></html>\r\n",
+                 current_bandwidth, config.max_bandwidth);
+        q += strlen(q);
+        /* prepare output buffer */
+        c->buffer_ptr = c->buffer;
+        c->buffer_end = q;
+        c->state = HTTPSTATE_SEND_HEADER;
+        return 0;
+    }
+
+    if (redir_type != REDIR_NONE) {
+        const char *hostinfo = 0;
+
+        for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
+            if (av_strncasecmp(p, "Host:", 5) == 0) {
+                hostinfo = p + 5;
+                break;
+            }
+            p = strchr(p, '\n');
+            if (!p)
+                break;
+
+            p++;
+        }
+
+        if (hostinfo) {
+            char *eoh;
+            char hostbuf[260];
+
+            while (av_isspace(*hostinfo))
+                hostinfo++;
+
+            eoh = strchr(hostinfo, '\n');
+            if (eoh) {
+                if (eoh[-1] == '\r')
+                    eoh--;
+
+                if (eoh - hostinfo < sizeof(hostbuf) - 1) {
+                    memcpy(hostbuf, hostinfo, eoh - hostinfo);
+                    hostbuf[eoh - hostinfo] = 0;
+
+                    c->http_error = 200;
+                    q = c->buffer;
+                    switch(redir_type) {
+                    case REDIR_ASX:
+                        snprintf(q, c->buffer_size,
+                                      "HTTP/1.0 200 ASX Follows\r\n"
+                                      "Content-type: video/x-ms-asf\r\n"
+                                      "\r\n"
+                                      "<ASX Version=\"3\">\r\n"
+                                      //"<!-- Autogenerated by ffserver -->\r\n"
+                                      "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n"
+                                      "</ASX>\r\n", hostbuf, filename, info);
+                        q += strlen(q);
+                        break;
+                    case REDIR_RAM:
+                        snprintf(q, c->buffer_size,
+                                      "HTTP/1.0 200 RAM Follows\r\n"
+                                      "Content-type: audio/x-pn-realaudio\r\n"
+                                      "\r\n"
+                                      "# Autogenerated by ffserver\r\n"
+                                      "http://%s/%s%s\r\n", hostbuf, filename, info);
+                        q += strlen(q);
+                        break;
+                    case REDIR_ASF:
+                        snprintf(q, c->buffer_size,
+                                      "HTTP/1.0 200 ASF Redirect follows\r\n"
+                                      "Content-type: video/x-ms-asf\r\n"
+                                      "\r\n"
+                                      "[Reference]\r\n"
+                                      "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info);
+                        q += strlen(q);
+                        break;
+                    case REDIR_RTSP:
+                        {
+                            char hostname[256], *p;
+                            /* extract only hostname */
+                            av_strlcpy(hostname, hostbuf, sizeof(hostname));
+                            p = strrchr(hostname, ':');
+                            if (p)
+                                *p = '\0';
+                            snprintf(q, c->buffer_size,
+                                          "HTTP/1.0 200 RTSP Redirect follows\r\n"
+                                          /* XXX: incorrect MIME type ? */
+                                          "Content-type: application/x-rtsp\r\n"
+                                          "\r\n"
+                                          "rtsp://%s:%d/%s\r\n", hostname, ntohs(config.rtsp_addr.sin_port), filename);
+                            q += strlen(q);
+                        }
+                        break;
+                    case REDIR_SDP:
+                        {
+                            uint8_t *sdp_data;
+                            int sdp_data_size;
+                            socklen_t len;
+                            struct sockaddr_in my_addr;
+
+                            snprintf(q, c->buffer_size,
+                                          "HTTP/1.0 200 OK\r\n"
+                                          "Content-type: application/sdp\r\n"
+                                          "\r\n");
+                            q += strlen(q);
+
+                            len = sizeof(my_addr);
+
+                            /* XXX: Should probably fail? */
+                            if (getsockname(c->fd, (struct sockaddr *)&my_addr, &len))
+                                http_log("getsockname() failed\n");
+
+                            /* XXX: should use a dynamic buffer */
+                            sdp_data_size = prepare_sdp_description(stream,
+                                                                    &sdp_data,
+                                                                    my_addr.sin_addr);
+                            if (sdp_data_size > 0) {
+                                memcpy(q, sdp_data, sdp_data_size);
+                                q += sdp_data_size;
+                                *q = '\0';
+                                av_freep(&sdp_data);
+                            }
+                        }
+                        break;
+                    default:
+                        abort();
+                        break;
+                    }
+
+                    /* prepare output buffer */
+                    c->buffer_ptr = c->buffer;
+                    c->buffer_end = q;
+                    c->state = HTTPSTATE_SEND_HEADER;
+                    return 0;
+                }
+            }
+        }
+
+        snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
+        goto send_error;
+    }
+
+    stream->conns_served++;
+
+    /* XXX: add there authenticate and IP match */
+
+    if (c->post) {
+        /* if post, it means a feed is being sent */
+        if (!stream->is_feed) {
+            /* However it might be a status report from WMP! Let us log the
+             * data as it might come handy one day. */
+            const char *logline = 0;
+            int client_id = 0;
+
+            for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
+                if (av_strncasecmp(p, "Pragma: log-line=", 17) == 0) {
+                    logline = p;
+                    break;
+                }
+                if (av_strncasecmp(p, "Pragma: client-id=", 18) == 0)
+                    client_id = strtol(p + 18, 0, 10);
+                p = strchr(p, '\n');
+                if (!p)
+                    break;
+
+                p++;
+            }
+
+            if (logline) {
+                char *eol = strchr(logline, '\n');
+
+                logline += 17;
+
+                if (eol) {
+                    if (eol[-1] == '\r')
+                        eol--;
+                    http_log("%.*s\n", (int) (eol - logline), logline);
+                    c->suppress_log = 1;
+                }
+            }
+
+#ifdef DEBUG
+            http_log("\nGot request:\n%s\n", c->buffer);
+#endif
+
+            if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
+                HTTPContext *wmpc;
+
+                /* Now we have to find the client_id */
+                for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
+                    if (wmpc->wmp_client_id == client_id)
+                        break;
+                }
+
+                if (wmpc && modify_current_stream(wmpc, ratebuf))
+                    wmpc->switch_pending = 1;
+            }
+
+            snprintf(msg, sizeof(msg), "POST command not handled");
+            c->stream = 0;
+            goto send_error;
+        }
+        if (http_start_receive_data(c) < 0) {
+            snprintf(msg, sizeof(msg), "could not open feed");
+            goto send_error;
+        }
+        c->http_error = 0;
+        c->state = HTTPSTATE_RECEIVE_DATA;
+        return 0;
+    }
+
+#ifdef DEBUG
+    if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
+        http_log("\nGot request:\n%s\n", c->buffer);
+#endif
+
+    if (c->stream->stream_type == STREAM_TYPE_STATUS)
+        goto send_status;
+
+    /* open input stream */
+    if (open_input_stream(c, info) < 0) {
+        snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
+        goto send_error;
+    }
+
+    /* prepare HTTP header */
+    c->buffer[0] = 0;
+    av_strlcatf(c->buffer, c->buffer_size, "HTTP/1.0 200 OK\r\n");
+    mime_type = c->stream->fmt->mime_type;
+    if (!mime_type)
+        mime_type = "application/x-octet-stream";
+    av_strlcatf(c->buffer, c->buffer_size, "Pragma: no-cache\r\n");
+
+    /* for asf, we need extra headers */
+    if (!strcmp(c->stream->fmt->name,"asf_stream")) {
+        /* Need to allocate a client id */
+
+        c->wmp_client_id = av_lfg_get(&random_state);
+
+        av_strlcatf(c->buffer, c->buffer_size, "Server: Cougar 4.1.0.3923\r\nCache-Control: no-cache\r\nPragma: client-id=%d\r\nPragma: features=\"broadcast\"\r\n", c->wmp_client_id);
+    }
+    av_strlcatf(c->buffer, c->buffer_size, "Content-Type: %s\r\n", mime_type);
+    av_strlcatf(c->buffer, c->buffer_size, "\r\n");
+    q = c->buffer + strlen(c->buffer);
+
+    /* prepare output buffer */
+    c->http_error = 0;
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = q;
+    c->state = HTTPSTATE_SEND_HEADER;
+    return 0;
+ send_error:
+    c->http_error = 404;
+    q = c->buffer;
+    if (!htmlencode(msg, &encoded_msg)) {
+        http_log("Could not encode filename '%s' as HTML\n", msg);
+    }
+    snprintf(q, c->buffer_size,
+                  "HTTP/1.0 404 Not Found\r\n"
+                  "Content-type: text/html\r\n"
+                  "\r\n"
+                  "<!DOCTYPE html>\n"
+                  "<html>\n"
+                  "<head>\n"
+                  "<meta charset=\"UTF-8\">\n"
+                  "<title>404 Not Found</title>\n"
+                  "</head>\n"
+                  "<body>%s</body>\n"
+                  "</html>\n", encoded_msg? encoded_msg : "File not found");
+    q += strlen(q);
+    /* prepare output buffer */
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = q;
+    c->state = HTTPSTATE_SEND_HEADER;
+    av_freep(&encoded_msg);
+    return 0;
+ send_status:
+    compute_status(c);
+    /* horrible: we use this value to avoid
+     * going to the send data state */
+    c->http_error = 200;
+    c->state = HTTPSTATE_SEND_HEADER;
+    return 0;
+}
+
+static void fmt_bytecount(AVIOContext *pb, int64_t count)
+{
+    static const char suffix[] = " kMGTP";
+    const char *s;
+
+    for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
+
+    avio_printf(pb, "%"PRId64"%c", count, *s);
+}
+
+static inline void print_stream_params(AVIOContext *pb, FFServerStream *stream)
+{
+    int i, stream_no;
+    const char *type = "unknown";
+    char parameters[64];
+    LayeredAVStream *st;
+    AVCodec *codec;
+
+    stream_no = stream->nb_streams;
+
+    avio_printf(pb, "<table><tr><th>Stream<th>"
+                    "type<th>kbit/s<th>codec<th>"
+                    "Parameters\n");
+
+    for (i = 0; i < stream_no; i++) {
+        st = stream->streams[i];
+        codec = avcodec_find_encoder(st->codecpar->codec_id);
+
+        parameters[0] = 0;
+
+        switch(st->codecpar->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            type = "audio";
+            snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz",
+                     st->codecpar->channels, st->codecpar->sample_rate);
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            type = "video";
+            snprintf(parameters, sizeof(parameters),
+                     "%dx%d, q=%d-%d, fps=%d", st->codecpar->width,
+                     st->codecpar->height, st->codec->qmin, st->codec->qmax,
+                     st->time_base.den / st->time_base.num);
+            break;
+        default:
+            abort();
+        }
+
+        avio_printf(pb, "<tr><td>%d<td>%s<td>%"PRId64
+                        "<td>%s<td>%s\n",
+                    i, type, st->codecpar->bit_rate/1000,
+                    codec ? codec->name : "", parameters);
+     }
+
+     avio_printf(pb, "</table>\n");
+}
+
+static void clean_html(char *clean, int clean_len, char *dirty)
+{
+    int i, o;
+
+    for (o = i = 0; o+10 < clean_len && dirty[i];) {
+        int len = strspn(dirty+i, "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$-_.+!*(),?/ :;%");
+        if (len) {
+            if (o + len >= clean_len)
+                break;
+            memcpy(clean + o, dirty + i, len);
+            i += len;
+            o += len;
+        } else {
+            int c = dirty[i++];
+            switch (c) {
+            case  '&': av_strlcat(clean+o, "&amp;"  , clean_len - o); break;
+            case  '<': av_strlcat(clean+o, "&lt;"   , clean_len - o); break;
+            case  '>': av_strlcat(clean+o, "&gt;"   , clean_len - o); break;
+            case '\'': av_strlcat(clean+o, "&apos;" , clean_len - o); break;
+            case '\"': av_strlcat(clean+o, "&quot;" , clean_len - o); break;
+            default:   av_strlcat(clean+o, "&#9785;", clean_len - o); break;
+            }
+            o += strlen(clean+o);
+        }
+    }
+    clean[o] = 0;
+}
+
+static void compute_status(HTTPContext *c)
+{
+    HTTPContext *c1;
+    FFServerStream *stream;
+    char *p;
+    time_t ti;
+    int i, len;
+    AVIOContext *pb;
+
+    if (avio_open_dyn_buf(&pb) < 0) {
+        /* XXX: return an error ? */
+        c->buffer_ptr = c->buffer;
+        c->buffer_end = c->buffer;
+        return;
+    }
+
+    avio_printf(pb, "HTTP/1.0 200 OK\r\n");
+    avio_printf(pb, "Content-type: text/html\r\n");
+    avio_printf(pb, "Pragma: no-cache\r\n");
+    avio_printf(pb, "\r\n");
+
+    avio_printf(pb, "<!DOCTYPE html>\n");
+    avio_printf(pb, "<html><head><title>%s Status</title>\n", program_name);
+    if (c->stream->feed_filename[0])
+        avio_printf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n",
+                    c->stream->feed_filename);
+    avio_printf(pb, "</head>\n<body>");
+    avio_printf(pb, "<h1>%s Status</h1>\n", program_name);
+    /* format status */
+    avio_printf(pb, "<h2>Available Streams</h2>\n");
+    avio_printf(pb, "<table>\n");
+    avio_printf(pb, "<tr><th>Path<th>Served<br>Conns<th><br>bytes<th>Format<th>Bit rate<br>kbit/s<th>Video<br>kbit/s<th><br>Codec<th>Audio<br>kbit/s<th><br>Codec<th>Feed\n");
+    stream = config.first_stream;
+    while (stream) {
+        char sfilename[1024];
+        char *eosf;
+
+        if (stream->feed == stream) {
+            stream = stream->next;
+            continue;
+        }
+
+        av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
+        eosf = sfilename + strlen(sfilename);
+        if (eosf - sfilename >= 4) {
+            if (strcmp(eosf - 4, ".asf") == 0)
+                strcpy(eosf - 4, ".asx");
+            else if (strcmp(eosf - 3, ".rm") == 0)
+                strcpy(eosf - 3, ".ram");
+            else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
+                /* generate a sample RTSP director if
+                 * unicast. Generate an SDP redirector if
+                 * multicast */
+                eosf = strrchr(sfilename, '.');
+                if (!eosf)
+                    eosf = sfilename + strlen(sfilename);
+                if (stream->is_multicast)
+                    strcpy(eosf, ".sdp");
+                else
+                    strcpy(eosf, ".rtsp");
+            }
+        }
+
+        avio_printf(pb, "<tr><td><a href=\"/%s\">%s</a> ",
+                    sfilename, stream->filename);
+        avio_printf(pb, "<td> %d <td> ",
+                    stream->conns_served);
+        // TODO: Investigate if we can make http bitexact so it always produces the same count of bytes
+        if (!config.bitexact)
+            fmt_bytecount(pb, stream->bytes_served);
+
+        switch(stream->stream_type) {
+        case STREAM_TYPE_LIVE: {
+            int audio_bit_rate = 0;
+            int video_bit_rate = 0;
+            const char *audio_codec_name = "";
+            const char *video_codec_name = "";
+            const char *audio_codec_name_extra = "";
+            const char *video_codec_name_extra = "";
+
+            for(i=0;i<stream->nb_streams;i++) {
+                LayeredAVStream *st = stream->streams[i];
+                AVCodec *codec = avcodec_find_encoder(st->codecpar->codec_id);
+
+                switch(st->codecpar->codec_type) {
+                case AVMEDIA_TYPE_AUDIO:
+                    audio_bit_rate += st->codecpar->bit_rate;
+                    if (codec) {
+                        if (*audio_codec_name)
+                            audio_codec_name_extra = "...";
+                        audio_codec_name = codec->name;
+                    }
+                    break;
+                case AVMEDIA_TYPE_VIDEO:
+                    video_bit_rate += st->codecpar->bit_rate;
+                    if (codec) {
+                        if (*video_codec_name)
+                            video_codec_name_extra = "...";
+                        video_codec_name = codec->name;
+                    }
+                    break;
+                case AVMEDIA_TYPE_DATA:
+                    video_bit_rate += st->codecpar->bit_rate;
+                    break;
+                default:
+                    abort();
+                }
+            }
+
+            avio_printf(pb, "<td> %s <td> %d <td> %d <td> %s %s <td> "
+                            "%d <td> %s %s",
+                        stream->fmt->name, stream->bandwidth,
+                        video_bit_rate / 1000, video_codec_name,
+                        video_codec_name_extra, audio_bit_rate / 1000,
+                        audio_codec_name, audio_codec_name_extra);
+
+            if (stream->feed)
+                avio_printf(pb, "<td>%s", stream->feed->filename);
+            else
+                avio_printf(pb, "<td>%s", stream->feed_filename);
+            avio_printf(pb, "\n");
+        }
+            break;
+        default:
+            avio_printf(pb, "<td> - <td> - "
+                            "<td> - <td><td> - <td>\n");
+            break;
+        }
+        stream = stream->next;
+    }
+    avio_printf(pb, "</table>\n");
+
+    stream = config.first_stream;
+    while (stream) {
+
+        if (stream->feed != stream) {
+            stream = stream->next;
+            continue;
+        }
+
+        avio_printf(pb, "<h2>Feed %s</h2>", stream->filename);
+        if (stream->pid) {
+            avio_printf(pb, "Running as pid %"PRId64".\n", (int64_t) stream->pid);
+
+#if defined(linux)
+            {
+                FILE *pid_stat;
+                char ps_cmd[64];
+
+                /* This is somewhat linux specific I guess */
+                snprintf(ps_cmd, sizeof(ps_cmd),
+                         "ps -o \"%%cpu,cputime\" --no-headers %"PRId64"",
+                         (int64_t) stream->pid);
+
+                 pid_stat = popen(ps_cmd, "r");
+                 if (pid_stat) {
+                     char cpuperc[10];
+                     char cpuused[64];
+
+                     if (fscanf(pid_stat, "%9s %63s", cpuperc, cpuused) == 2) {
+                         avio_printf(pb, "Currently using %s%% of the cpu. "
+                                         "Total time used %s.\n",
+                                     cpuperc, cpuused);
+                     }
+                     fclose(pid_stat);
+                 }
+            }
+#endif
+
+            avio_printf(pb, "<p>");
+        }
+
+        print_stream_params(pb, stream);
+        stream = stream->next;
+    }
+
+    /* connection status */
+    avio_printf(pb, "<h2>Connection Status</h2>\n");
+
+    avio_printf(pb, "Number of connections: %d / %d<br>\n",
+                nb_connections, config.nb_max_connections);
+
+    avio_printf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n",
+                current_bandwidth, config.max_bandwidth);
+
+    avio_printf(pb, "<table>\n");
+    avio_printf(pb, "<tr><th>#<th>File<th>IP<th>URL<th>Proto<th>State<th>Target "
+                    "bit/s<th>Actual bit/s<th>Bytes transferred\n");
+    c1 = first_http_ctx;
+    i = 0;
+    while (c1) {
+        int bitrate;
+        int j;
+
+        bitrate = 0;
+        if (c1->stream) {
+            for (j = 0; j < c1->stream->nb_streams; j++) {
+                if (!c1->stream->feed)
+                    bitrate += c1->stream->streams[j]->codecpar->bit_rate;
+                else if (c1->feed_streams[j] >= 0)
+                    bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codecpar->bit_rate;
+            }
+        }
+
+        i++;
+        p = inet_ntoa(c1->from_addr.sin_addr);
+        clean_html(c1->clean_url, sizeof(c1->clean_url), c1->url);
+        avio_printf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td>%s"
+                        "<td>",
+                    i, c1->stream ? c1->stream->filename : "",
+                    c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
+                    p,
+                    c1->clean_url,
+                    c1->protocol, http_state[c1->state]);
+        fmt_bytecount(pb, bitrate);
+        avio_printf(pb, "<td>");
+        fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
+        avio_printf(pb, "<td>");
+        fmt_bytecount(pb, c1->data_count);
+        avio_printf(pb, "\n");
+        c1 = c1->next;
+    }
+    avio_printf(pb, "</table>\n");
+
+    if (!config.bitexact) {
+        /* date */
+        ti = time(NULL);
+        p = ctime(&ti);
+        avio_printf(pb, "<hr>Generated at %s", p);
+    }
+    avio_printf(pb, "</body>\n</html>\n");
+
+    len = avio_close_dyn_buf(pb, &c->pb_buffer);
+    c->buffer_ptr = c->pb_buffer;
+    c->buffer_end = c->pb_buffer + len;
+}
+
+static int open_input_stream(HTTPContext *c, const char *info)
+{
+    char buf[128];
+    char input_filename[1024];
+    AVFormatContext *s = NULL;
+    int buf_size, i, ret;
+    int64_t stream_pos;
+
+    /* find file name */
+    if (c->stream->feed) {
+        strcpy(input_filename, c->stream->feed->feed_filename);
+        buf_size = FFM_PACKET_SIZE;
+        /* compute position (absolute time) */
+        if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
+            if ((ret = av_parse_time(&stream_pos, buf, 0)) < 0) {
+                http_log("Invalid date specification '%s' for stream\n", buf);
+                return ret;
+            }
+        } else if (av_find_info_tag(buf, sizeof(buf), "buffer", info)) {
+            int prebuffer = strtol(buf, 0, 10);
+            stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
+        } else
+            stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
+    } else {
+        strcpy(input_filename, c->stream->feed_filename);
+        buf_size = 0;
+        /* compute position (relative time) */
+        if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
+            if ((ret = av_parse_time(&stream_pos, buf, 1)) < 0) {
+                http_log("Invalid date specification '%s' for stream\n", buf);
+                return ret;
+            }
+        } else
+            stream_pos = 0;
+    }
+    if (!input_filename[0]) {
+        http_log("No filename was specified for stream\n");
+        return AVERROR(EINVAL);
+    }
+
+    /* open stream */
+    ret = avformat_open_input(&s, input_filename, c->stream->ifmt,
+                              &c->stream->in_opts);
+    if (ret < 0) {
+        http_log("Could not open input '%s': %s\n",
+                 input_filename, av_err2str(ret));
+        return ret;
+    }
+
+    /* set buffer size */
+    if (buf_size > 0) {
+        ret = ffio_set_buf_size(s->pb, buf_size);
+        if (ret < 0) {
+            http_log("Failed to set buffer size\n");
+            return ret;
+        }
+    }
+
+    s->flags |= AVFMT_FLAG_GENPTS;
+    c->fmt_in = s;
+    if (strcmp(s->iformat->name, "ffm") &&
+        (ret = avformat_find_stream_info(c->fmt_in, NULL)) < 0) {
+        http_log("Could not find stream info for input '%s'\n", input_filename);
+        avformat_close_input(&s);
+        return ret;
+    }
+
+    /* choose stream as clock source (we favor the video stream if
+     * present) for packet sending */
+    c->pts_stream_index = 0;
+    for(i=0;i<c->stream->nb_streams;i++) {
+        if (c->pts_stream_index == 0 &&
+            c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+            c->pts_stream_index = i;
+        }
+    }
+
+    if (c->fmt_in->iformat->read_seek)
+        av_seek_frame(c->fmt_in, -1, stream_pos, 0);
+    /* set the start time (needed for maxtime and RTP packet timing) */
+    c->start_time = cur_time;
+    c->first_pts = AV_NOPTS_VALUE;
+    return 0;
+}
+
+/* return the server clock (in us) */
+static int64_t get_server_clock(HTTPContext *c)
+{
+    /* compute current pts value from system time */
+    return (cur_time - c->start_time) * 1000;
+}
+
+/* return the estimated time (in us) at which the current packet must be sent */
+static int64_t get_packet_send_clock(HTTPContext *c)
+{
+    int bytes_left, bytes_sent, frame_bytes;
+
+    frame_bytes = c->cur_frame_bytes;
+    if (frame_bytes <= 0)
+        return c->cur_pts;
+
+    bytes_left = c->buffer_end - c->buffer_ptr;
+    bytes_sent = frame_bytes - bytes_left;
+    return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
+}
+
+
+static int http_prepare_data(HTTPContext *c)
+{
+    int i, len, ret;
+    AVFormatContext *ctx;
+
+    av_freep(&c->pb_buffer);
+    switch(c->state) {
+    case HTTPSTATE_SEND_DATA_HEADER:
+        ctx = avformat_alloc_context();
+        if (!ctx)
+            return AVERROR(ENOMEM);
+        c->pfmt_ctx = ctx;
+        av_dict_copy(&(c->pfmt_ctx->metadata), c->stream->metadata, 0);
+
+        for(i=0;i<c->stream->nb_streams;i++) {
+            LayeredAVStream *src;
+            AVStream *st = avformat_new_stream(c->pfmt_ctx, NULL);
+            if (!st)
+                return AVERROR(ENOMEM);
+
+            /* if file or feed, then just take streams from FFServerStream
+             * struct */
+            if (!c->stream->feed ||
+                c->stream->feed == c->stream)
+                src = c->stream->streams[i];
+            else
+                src = c->stream->feed->streams[c->stream->feed_streams[i]];
+
+            unlayer_stream(c->pfmt_ctx->streams[i], src); //TODO we no longer copy st->internal, does this matter?
+            av_assert0(!c->pfmt_ctx->streams[i]->priv_data);
+
+            if (src->codec->flags & AV_CODEC_FLAG_BITEXACT)
+                c->pfmt_ctx->flags |= AVFMT_FLAG_BITEXACT;
+        }
+        /* set output format parameters */
+        c->pfmt_ctx->oformat = c->stream->fmt;
+        av_assert0(c->pfmt_ctx->nb_streams == c->stream->nb_streams);
+
+        c->got_key_frame = 0;
+
+        /* prepare header and save header data in a stream */
+        if (avio_open_dyn_buf(&c->pfmt_ctx->pb) < 0) {
+            /* XXX: potential leak */
+            return -1;
+        }
+        c->pfmt_ctx->pb->seekable = 0;
+
+        /*
+         * HACK to avoid MPEG-PS muxer to spit many underflow errors
+         * Default value from FFmpeg
+         * Try to set it using configuration option
+         */
+        c->pfmt_ctx->max_delay = (int)(0.7*AV_TIME_BASE);
+
+        if ((ret = avformat_write_header(c->pfmt_ctx, NULL)) < 0) {
+            http_log("Error writing output header for stream '%s': %s\n",
+                     c->stream->filename, av_err2str(ret));
+            return ret;
+        }
+        av_dict_free(&c->pfmt_ctx->metadata);
+
+        len = avio_close_dyn_buf(c->pfmt_ctx->pb, &c->pb_buffer);
+        c->buffer_ptr = c->pb_buffer;
+        c->buffer_end = c->pb_buffer + len;
+
+        c->state = HTTPSTATE_SEND_DATA;
+        c->last_packet_sent = 0;
+        break;
+    case HTTPSTATE_SEND_DATA:
+        /* find a new packet */
+        /* read a packet from the input stream */
+        if (c->stream->feed)
+            ffm_set_write_index(c->fmt_in,
+                                c->stream->feed->feed_write_index,
+                                c->stream->feed->feed_size);
+
+        if (c->stream->max_time &&
+            c->stream->max_time + c->start_time - cur_time < 0)
+            /* We have timed out */
+            c->state = HTTPSTATE_SEND_DATA_TRAILER;
+        else {
+            AVPacket pkt;
+        redo:
+            ret = av_read_frame(c->fmt_in, &pkt);
+            if (ret < 0) {
+                if (c->stream->feed) {
+                    /* if coming from feed, it means we reached the end of the
+                     * ffm file, so must wait for more data */
+                    c->state = HTTPSTATE_WAIT_FEED;
+                    return 1; /* state changed */
+                }
+                if (ret == AVERROR(EAGAIN)) {
+                    /* input not ready, come back later */
+                    return 0;
+                }
+                if (c->stream->loop) {
+                    avformat_close_input(&c->fmt_in);
+                    if (open_input_stream(c, "") < 0)
+                        goto no_loop;
+                    goto redo;
+                } else {
+                    no_loop:
+                        /* must send trailer now because EOF or error */
+                        c->state = HTTPSTATE_SEND_DATA_TRAILER;
+                }
+            } else {
+                int source_index = pkt.stream_index;
+                /* update first pts if needed */
+                if (c->first_pts == AV_NOPTS_VALUE && pkt.dts != AV_NOPTS_VALUE) {
+                    c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q);
+                    c->start_time = cur_time;
+                }
+                /* send it to the appropriate stream */
+                if (c->stream->feed) {
+                    /* if coming from a feed, select the right stream */
+                    if (c->switch_pending) {
+                        c->switch_pending = 0;
+                        for(i=0;i<c->stream->nb_streams;i++) {
+                            if (c->switch_feed_streams[i] == pkt.stream_index)
+                                if (pkt.flags & AV_PKT_FLAG_KEY)
+                                    c->switch_feed_streams[i] = -1;
+                            if (c->switch_feed_streams[i] >= 0)
+                                c->switch_pending = 1;
+                        }
+                    }
+                    for(i=0;i<c->stream->nb_streams;i++) {
+                        if (c->stream->feed_streams[i] == pkt.stream_index) {
+                            AVStream *st = c->fmt_in->streams[source_index];
+                            pkt.stream_index = i;
+                            if (pkt.flags & AV_PKT_FLAG_KEY &&
+                                (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
+                                 c->stream->nb_streams == 1))
+                                c->got_key_frame = 1;
+                            if (!c->stream->send_on_key || c->got_key_frame)
+                                goto send_it;
+                        }
+                    }
+                } else {
+                    AVStream *ist, *ost;
+                send_it:
+                    ist = c->fmt_in->streams[source_index];
+                    /* specific handling for RTP: we use several
+                     * output streams (one for each RTP connection).
+                     * XXX: need more abstract handling */
+                    if (c->is_packetized) {
+                        /* compute send time and duration */
+                        if (pkt.dts != AV_NOPTS_VALUE) {
+                            c->cur_pts = av_rescale_q(pkt.dts, ist->time_base, AV_TIME_BASE_Q);
+                            c->cur_pts -= c->first_pts;
+                        }
+                        c->cur_frame_duration = av_rescale_q(pkt.duration, ist->time_base, AV_TIME_BASE_Q);
+                        /* find RTP context */
+                        c->packet_stream_index = pkt.stream_index;
+                        ctx = c->rtp_ctx[c->packet_stream_index];
+                        if(!ctx) {
+                            av_packet_unref(&pkt);
+                            break;
+                        }
+                        /* only one stream per RTP connection */
+                        pkt.stream_index = 0;
+                    } else {
+                        ctx = c->pfmt_ctx;
+                        /* Fudge here */
+                    }
+
+                    if (c->is_packetized) {
+                        int max_packet_size;
+                        if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP)
+                            max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
+                        else
+                            max_packet_size = c->rtp_handles[c->packet_stream_index]->max_packet_size;
+                        ret = ffio_open_dyn_packet_buf(&ctx->pb,
+                                                       max_packet_size);
+                    } else
+                        ret = avio_open_dyn_buf(&ctx->pb);
+
+                    if (ret < 0) {
+                        /* XXX: potential leak */
+                        return -1;
+                    }
+                    ost = ctx->streams[pkt.stream_index];
+
+                    ctx->pb->seekable = 0;
+                    if (pkt.dts != AV_NOPTS_VALUE)
+                        pkt.dts = av_rescale_q(pkt.dts, ist->time_base,
+                                               ost->time_base);
+                    if (pkt.pts != AV_NOPTS_VALUE)
+                        pkt.pts = av_rescale_q(pkt.pts, ist->time_base,
+                                               ost->time_base);
+                    pkt.duration = av_rescale_q(pkt.duration, ist->time_base,
+                                                ost->time_base);
+                    if ((ret = av_write_frame(ctx, &pkt)) < 0) {
+                        http_log("Error writing frame to output for stream '%s': %s\n",
+                                 c->stream->filename, av_err2str(ret));
+                        c->state = HTTPSTATE_SEND_DATA_TRAILER;
+                    }
+
+                    av_freep(&c->pb_buffer);
+                    len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
+                    ctx->pb = NULL;
+                    c->cur_frame_bytes = len;
+                    c->buffer_ptr = c->pb_buffer;
+                    c->buffer_end = c->pb_buffer + len;
+
+                    if (len == 0) {
+                        av_packet_unref(&pkt);
+                        goto redo;
+                    }
+                }
+                av_packet_unref(&pkt);
+            }
+        }
+        break;
+    default:
+    case HTTPSTATE_SEND_DATA_TRAILER:
+        /* last packet test ? */
+        if (c->last_packet_sent || c->is_packetized)
+            return -1;
+        ctx = c->pfmt_ctx;
+        /* prepare header */
+        if (avio_open_dyn_buf(&ctx->pb) < 0) {
+            /* XXX: potential leak */
+            return -1;
+        }
+        c->pfmt_ctx->pb->seekable = 0;
+        av_write_trailer(ctx);
+        len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
+        c->buffer_ptr = c->pb_buffer;
+        c->buffer_end = c->pb_buffer + len;
+
+        c->last_packet_sent = 1;
+        break;
+    }
+    return 0;
+}
+
+/* should convert the format at the same time */
+/* send data starting at c->buffer_ptr to the output connection
+ * (either UDP or TCP)
+ */
+static int http_send_data(HTTPContext *c)
+{
+    int len, ret;
+
+    for(;;) {
+        if (c->buffer_ptr >= c->buffer_end) {
+            ret = http_prepare_data(c);
+            if (ret < 0)
+                return -1;
+            else if (ret)
+                /* state change requested */
+                break;
+        } else {
+            if (c->is_packetized) {
+                /* RTP data output */
+                len = c->buffer_end - c->buffer_ptr;
+                if (len < 4) {
+                    /* fail safe - should never happen */
+                fail1:
+                    c->buffer_ptr = c->buffer_end;
+                    return 0;
+                }
+                len = (c->buffer_ptr[0] << 24) |
+                    (c->buffer_ptr[1] << 16) |
+                    (c->buffer_ptr[2] << 8) |
+                    (c->buffer_ptr[3]);
+                if (len > (c->buffer_end - c->buffer_ptr))
+                    goto fail1;
+                if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) {
+                    /* nothing to send yet: we can wait */
+                    return 0;
+                }
+
+                c->data_count += len;
+                update_datarate(&c->datarate, c->data_count);
+                if (c->stream)
+                    c->stream->bytes_served += len;
+
+                if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) {
+                    /* RTP packets are sent inside the RTSP TCP connection */
+                    AVIOContext *pb;
+                    int interleaved_index, size;
+                    uint8_t header[4];
+                    HTTPContext *rtsp_c;
+
+                    rtsp_c = c->rtsp_c;
+                    /* if no RTSP connection left, error */
+                    if (!rtsp_c)
+                        return -1;
+                    /* if already sending something, then wait. */
+                    if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST)
+                        break;
+                    if (avio_open_dyn_buf(&pb) < 0)
+                        goto fail1;
+                    interleaved_index = c->packet_stream_index * 2;
+                    /* RTCP packets are sent at odd indexes */
+                    if (c->buffer_ptr[1] == 200)
+                        interleaved_index++;
+                    /* write RTSP TCP header */
+                    header[0] = '$';
+                    header[1] = interleaved_index;
+                    header[2] = len >> 8;
+                    header[3] = len;
+                    avio_write(pb, header, 4);
+                    /* write RTP packet data */
+                    c->buffer_ptr += 4;
+                    avio_write(pb, c->buffer_ptr, len);
+                    size = avio_close_dyn_buf(pb, &c->packet_buffer);
+                    /* prepare asynchronous TCP sending */
+                    rtsp_c->packet_buffer_ptr = c->packet_buffer;
+                    rtsp_c->packet_buffer_end = c->packet_buffer + size;
+                    c->buffer_ptr += len;
+
+                    /* send everything we can NOW */
+                    len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr,
+                               rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0);
+                    if (len > 0)
+                        rtsp_c->packet_buffer_ptr += len;
+                    if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) {
+                        /* if we could not send all the data, we will
+                         * send it later, so a new state is needed to
+                         * "lock" the RTSP TCP connection */
+                        rtsp_c->state = RTSPSTATE_SEND_PACKET;
+                        break;
+                    } else
+                        /* all data has been sent */
+                        av_freep(&c->packet_buffer);
+                } else {
+                    /* send RTP packet directly in UDP */
+                    c->buffer_ptr += 4;
+                    ffurl_write(c->rtp_handles[c->packet_stream_index],
+                                c->buffer_ptr, len);
+                    c->buffer_ptr += len;
+                    /* here we continue as we can send several packets
+                     * per 10 ms slot */
+                }
+            } else {
+                /* TCP data output */
+                len = send(c->fd, c->buffer_ptr,
+                           c->buffer_end - c->buffer_ptr, 0);
+                if (len < 0) {
+                    if (ff_neterrno() != AVERROR(EAGAIN) &&
+                        ff_neterrno() != AVERROR(EINTR))
+                        /* error : close connection */
+                        return -1;
+                    else
+                        return 0;
+                }
+                c->buffer_ptr += len;
+
+                c->data_count += len;
+                update_datarate(&c->datarate, c->data_count);
+                if (c->stream)
+                    c->stream->bytes_served += len;
+                break;
+            }
+        }
+    } /* for(;;) */
+    return 0;
+}
+
+static int http_start_receive_data(HTTPContext *c)
+{
+    int fd;
+    int ret;
+    int64_t ret64;
+
+    if (c->stream->feed_opened) {
+        http_log("Stream feed '%s' was not opened\n",
+                 c->stream->feed_filename);
+        return AVERROR(EINVAL);
+    }
+
+    /* Don't permit writing to this one */
+    if (c->stream->readonly) {
+        http_log("Cannot write to read-only file '%s'\n",
+                 c->stream->feed_filename);
+        return AVERROR(EINVAL);
+    }
+
+    /* open feed */
+    fd = open(c->stream->feed_filename, O_RDWR);
+    if (fd < 0) {
+        ret = AVERROR(errno);
+        http_log("Could not open feed file '%s': %s\n",
+                 c->stream->feed_filename, strerror(errno));
+        return ret;
+    }
+    c->feed_fd = fd;
+
+    if (c->stream->truncate) {
+        /* truncate feed file */
+        ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE);
+        http_log("Truncating feed file '%s'\n", c->stream->feed_filename);
+        if (ftruncate(c->feed_fd, FFM_PACKET_SIZE) < 0) {
+            ret = AVERROR(errno);
+            http_log("Error truncating feed file '%s': %s\n",
+                     c->stream->feed_filename, strerror(errno));
+            return ret;
+        }
+    } else {
+        ret64 = ffm_read_write_index(fd);
+        if (ret64 < 0) {
+            http_log("Error reading write index from feed file '%s': %s\n",
+                     c->stream->feed_filename, strerror(errno));
+            return ret64;
+        }
+        c->stream->feed_write_index = ret64;
+    }
+
+    c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd),
+                                        FFM_PACKET_SIZE);
+    c->stream->feed_size = lseek(fd, 0, SEEK_END);
+    lseek(fd, 0, SEEK_SET);
+
+    /* init buffer input */
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = c->buffer + FFM_PACKET_SIZE;
+    c->stream->feed_opened = 1;
+    c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked");
+    return 0;
+}
+
+static int http_receive_data(HTTPContext *c)
+{
+    HTTPContext *c1;
+    int len, loop_run = 0;
+
+    while (c->chunked_encoding && !c->chunk_size &&
+           c->buffer_end > c->buffer_ptr) {
+        /* read chunk header, if present */
+        len = recv(c->fd, c->buffer_ptr, 1, 0);
+
+        if (len < 0) {
+            if (ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR))
+                /* error : close connection */
+                goto fail;
+            return 0;
+        } else if (len == 0) {
+            /* end of connection : close it */
+            goto fail;
+        } else if (c->buffer_ptr - c->buffer >= 2 &&
+                   !memcmp(c->buffer_ptr - 1, "\r\n", 2)) {
+            c->chunk_size = strtol(c->buffer, 0, 16);
+            if (c->chunk_size <= 0) { // end of stream or invalid chunk size
+                c->chunk_size = 0;
+                goto fail;
+            }
+            c->buffer_ptr = c->buffer;
+            break;
+        } else if (++loop_run > 10)
+            /* no chunk header, abort */
+            goto fail;
+        else
+            c->buffer_ptr++;
+    }
+
+    if (c->buffer_end > c->buffer_ptr) {
+        len = recv(c->fd, c->buffer_ptr,
+                   FFMIN(c->chunk_size, c->buffer_end - c->buffer_ptr), 0);
+        if (len < 0) {
+            if (ff_neterrno() != AVERROR(EAGAIN) &&
+                ff_neterrno() != AVERROR(EINTR))
+                /* error : close connection */
+                goto fail;
+        } else if (len == 0)
+            /* end of connection : close it */
+            goto fail;
+        else {
+            av_assert0(len <= c->chunk_size);
+            c->chunk_size -= len;
+            c->buffer_ptr += len;
+            c->data_count += len;
+            update_datarate(&c->datarate, c->data_count);
+        }
+    }
+
+    if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) {
+        if (c->buffer[0] != 'f' ||
+            c->buffer[1] != 'm') {
+            http_log("Feed stream has become desynchronized -- disconnecting\n");
+            goto fail;
+        }
+    }
+
+    if (c->buffer_ptr >= c->buffer_end) {
+        FFServerStream *feed = c->stream;
+        /* a packet has been received : write it in the store, except
+         * if header */
+        if (c->data_count > FFM_PACKET_SIZE) {
+            /* XXX: use llseek or url_seek
+             * XXX: Should probably fail? */
+            if (lseek(c->feed_fd, feed->feed_write_index, SEEK_SET) == -1)
+                http_log("Seek to %"PRId64" failed\n", feed->feed_write_index);
+
+            if (write(c->feed_fd, c->buffer, FFM_PACKET_SIZE) < 0) {
+                http_log("Error writing to feed file: %s\n", strerror(errno));
+                goto fail;
+            }
+
+            feed->feed_write_index += FFM_PACKET_SIZE;
+            /* update file size */
+            if (feed->feed_write_index > c->stream->feed_size)
+                feed->feed_size = feed->feed_write_index;
+
+            /* handle wrap around if max file size reached */
+            if (c->stream->feed_max_size &&
+                feed->feed_write_index >= c->stream->feed_max_size)
+                feed->feed_write_index = FFM_PACKET_SIZE;
+
+            /* write index */
+            if (ffm_write_write_index(c->feed_fd, feed->feed_write_index) < 0) {
+                http_log("Error writing index to feed file: %s\n",
+                         strerror(errno));
+                goto fail;
+            }
+
+            /* wake up any waiting connections */
+            for(c1 = first_http_ctx; c1; c1 = c1->next) {
+                if (c1->state == HTTPSTATE_WAIT_FEED &&
+                    c1->stream->feed == c->stream->feed)
+                    c1->state = HTTPSTATE_SEND_DATA;
+            }
+        } else {
+            /* We have a header in our hands that contains useful data */
+            AVFormatContext *s = avformat_alloc_context();
+            AVIOContext *pb;
+            AVInputFormat *fmt_in;
+            int i;
+
+            if (!s)
+                goto fail;
+
+            /* use feed output format name to find corresponding input format */
+            fmt_in = av_find_input_format(feed->fmt->name);
+            if (!fmt_in)
+                goto fail;
+
+            pb = avio_alloc_context(c->buffer, c->buffer_end - c->buffer,
+                                    0, NULL, NULL, NULL, NULL);
+            if (!pb)
+                goto fail;
+
+            pb->seekable = 0;
+
+            s->pb = pb;
+            if (avformat_open_input(&s, c->stream->feed_filename, fmt_in, NULL) < 0) {
+                av_freep(&pb);
+                goto fail;
+            }
+
+            /* Now we have the actual streams */
+            if (s->nb_streams != feed->nb_streams) {
+                avformat_close_input(&s);
+                av_freep(&pb);
+                http_log("Feed '%s' stream number does not match registered feed\n",
+                         c->stream->feed_filename);
+                goto fail;
+            }
+
+            for (i = 0; i < s->nb_streams; i++) {
+                LayeredAVStream *fst = feed->streams[i];
+                AVStream *st = s->streams[i];
+                avcodec_parameters_to_context(fst->codec, st->codecpar);
+                avcodec_parameters_from_context(fst->codecpar, fst->codec);
+            }
+
+            avformat_close_input(&s);
+            av_freep(&pb);
+        }
+        c->buffer_ptr = c->buffer;
+    }
+
+    return 0;
+ fail:
+    c->stream->feed_opened = 0;
+    close(c->feed_fd);
+    /* wake up any waiting connections to stop waiting for feed */
+    for(c1 = first_http_ctx; c1; c1 = c1->next) {
+        if (c1->state == HTTPSTATE_WAIT_FEED &&
+            c1->stream->feed == c->stream->feed)
+            c1->state = HTTPSTATE_SEND_DATA_TRAILER;
+    }
+    return -1;
+}
+
+/********************************************************************/
+/* RTSP handling */
+
+static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number)
+{
+    const char *str;
+    time_t ti;
+    struct tm *tm;
+    char buf2[32];
+
+    str = RTSP_STATUS_CODE2STRING(error_number);
+    if (!str)
+        str = "Unknown Error";
+
+    avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str);
+    avio_printf(c->pb, "CSeq: %d\r\n", c->seq);
+
+    /* output GMT time */
+    ti = time(NULL);
+    tm = gmtime(&ti);
+    strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm);
+    avio_printf(c->pb, "Date: %s GMT\r\n", buf2);
+}
+
+static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number)
+{
+    rtsp_reply_header(c, error_number);
+    avio_printf(c->pb, "\r\n");
+}
+
+static int rtsp_parse_request(HTTPContext *c)
+{
+    const char *p, *p1, *p2;
+    char cmd[32];
+    char url[1024];
+    char protocol[32];
+    char line[1024];
+    int len;
+    RTSPMessageHeader header1 = { 0 }, *header = &header1;
+
+    c->buffer_ptr[0] = '\0';
+    p = c->buffer;
+
+    get_word(cmd, sizeof(cmd), &p);
+    get_word(url, sizeof(url), &p);
+    get_word(protocol, sizeof(protocol), &p);
+
+    av_strlcpy(c->method, cmd, sizeof(c->method));
+    av_strlcpy(c->url, url, sizeof(c->url));
+    av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
+
+    if (avio_open_dyn_buf(&c->pb) < 0) {
+        /* XXX: cannot do more */
+        c->pb = NULL; /* safety */
+        return -1;
+    }
+
+    /* check version name */
+    if (strcmp(protocol, "RTSP/1.0")) {
+        rtsp_reply_error(c, RTSP_STATUS_VERSION);
+        goto the_end;
+    }
+
+    /* parse each header line */
+    /* skip to next line */
+    while (*p != '\n' && *p != '\0')
+        p++;
+    if (*p == '\n')
+        p++;
+    while (*p != '\0') {
+        p1 = memchr(p, '\n', (char *)c->buffer_ptr - p);
+        if (!p1)
+            break;
+        p2 = p1;
+        if (p2 > p && p2[-1] == '\r')
+            p2--;
+        /* skip empty line */
+        if (p2 == p)
+            break;
+        len = p2 - p;
+        if (len > sizeof(line) - 1)
+            len = sizeof(line) - 1;
+        memcpy(line, p, len);
+        line[len] = '\0';
+        ff_rtsp_parse_line(NULL, header, line, NULL, NULL);
+        p = p1 + 1;
+    }
+
+    /* handle sequence number */
+    c->seq = header->seq;
+
+    if (!strcmp(cmd, "DESCRIBE"))
+        rtsp_cmd_describe(c, url);
+    else if (!strcmp(cmd, "OPTIONS"))
+        rtsp_cmd_options(c, url);
+    else if (!strcmp(cmd, "SETUP"))
+        rtsp_cmd_setup(c, url, header);
+    else if (!strcmp(cmd, "PLAY"))
+        rtsp_cmd_play(c, url, header);
+    else if (!strcmp(cmd, "PAUSE"))
+        rtsp_cmd_interrupt(c, url, header, 1);
+    else if (!strcmp(cmd, "TEARDOWN"))
+        rtsp_cmd_interrupt(c, url, header, 0);
+    else
+        rtsp_reply_error(c, RTSP_STATUS_METHOD);
+
+ the_end:
+    len = avio_close_dyn_buf(c->pb, &c->pb_buffer);
+    c->pb = NULL; /* safety */
+    if (len < 0)
+        /* XXX: cannot do more */
+        return -1;
+
+    c->buffer_ptr = c->pb_buffer;
+    c->buffer_end = c->pb_buffer + len;
+    c->state = RTSPSTATE_SEND_REPLY;
+    return 0;
+}
+
+static int prepare_sdp_description(FFServerStream *stream, uint8_t **pbuffer,
+                                   struct in_addr my_ip)
+{
+    AVFormatContext *avc;
+    AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
+    AVDictionaryEntry *entry = av_dict_get(stream->metadata, "title", NULL, 0);
+    int i;
+
+    *pbuffer = NULL;
+
+    avc =  avformat_alloc_context();
+    if (!avc || !rtp_format)
+        return -1;
+
+    avc->oformat = rtp_format;
+    av_dict_set(&avc->metadata, "title",
+                entry ? entry->value : "No Title", 0);
+    if (stream->is_multicast) {
+        snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d",
+                 inet_ntoa(stream->multicast_ip),
+                 stream->multicast_port, stream->multicast_ttl);
+    } else
+        snprintf(avc->filename, 1024, "rtp://0.0.0.0");
+
+    for(i = 0; i < stream->nb_streams; i++) {
+        AVStream *st = avformat_new_stream(avc, NULL);
+        if (!st)
+            goto sdp_done;
+        avcodec_parameters_from_context(stream->streams[i]->codecpar, stream->streams[i]->codec);
+        unlayer_stream(st, stream->streams[i]);
+    }
+#define PBUFFER_SIZE 2048
+    *pbuffer = av_mallocz(PBUFFER_SIZE);
+    if (!*pbuffer)
+        goto sdp_done;
+    av_sdp_create(&avc, 1, *pbuffer, PBUFFER_SIZE);
+
+ sdp_done:
+    av_freep(&avc->streams);
+    av_dict_free(&avc->metadata);
+    av_free(avc);
+
+    return *pbuffer ? strlen(*pbuffer) : AVERROR(ENOMEM);
+}
+
+static void rtsp_cmd_options(HTTPContext *c, const char *url)
+{
+    /* rtsp_reply_header(c, RTSP_STATUS_OK); */
+    avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK");
+    avio_printf(c->pb, "CSeq: %d\r\n", c->seq);
+    avio_printf(c->pb, "Public: %s\r\n",
+                "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
+    avio_printf(c->pb, "\r\n");
+}
+
+static void rtsp_cmd_describe(HTTPContext *c, const char *url)
+{
+    FFServerStream *stream;
+    char path1[1024];
+    const char *path;
+    uint8_t *content;
+    int content_length;
+    socklen_t len;
+    struct sockaddr_in my_addr;
+
+    /* find which URL is asked */
+    av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
+    path = path1;
+    if (*path == '/')
+        path++;
+
+    for(stream = config.first_stream; stream; stream = stream->next) {
+        if (!stream->is_feed &&
+            stream->fmt && !strcmp(stream->fmt->name, "rtp") &&
+            !strcmp(path, stream->filename)) {
+            goto found;
+        }
+    }
+    /* no stream found */
+    rtsp_reply_error(c, RTSP_STATUS_NOT_FOUND);
+    return;
+
+ found:
+    /* prepare the media description in SDP format */
+
+    /* get the host IP */
+    len = sizeof(my_addr);
+    getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
+    content_length = prepare_sdp_description(stream, &content,
+                                             my_addr.sin_addr);
+    if (content_length < 0) {
+        rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
+        return;
+    }
+    rtsp_reply_header(c, RTSP_STATUS_OK);
+    avio_printf(c->pb, "Content-Base: %s/\r\n", url);
+    avio_printf(c->pb, "Content-Type: application/sdp\r\n");
+    avio_printf(c->pb, "Content-Length: %d\r\n", content_length);
+    avio_printf(c->pb, "\r\n");
+    avio_write(c->pb, content, content_length);
+    av_free(content);
+}
+
+static HTTPContext *find_rtp_session(const char *session_id)
+{
+    HTTPContext *c;
+
+    if (session_id[0] == '\0')
+        return NULL;
+
+    for(c = first_http_ctx; c; c = c->next) {
+        if (!strcmp(c->session_id, session_id))
+            return c;
+    }
+    return NULL;
+}
+
+static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport)
+{
+    RTSPTransportField *th;
+    int i;
+
+    for(i=0;i<h->nb_transports;i++) {
+        th = &h->transports[i];
+        if (th->lower_transport == lower_transport)
+            return th;
+    }
+    return NULL;
+}
+
+static void rtsp_cmd_setup(HTTPContext *c, const char *url,
+                           RTSPMessageHeader *h)
+{
+    FFServerStream *stream;
+    int stream_index, rtp_port, rtcp_port;
+    char buf[1024];
+    char path1[1024];
+    const char *path;
+    HTTPContext *rtp_c;
+    RTSPTransportField *th;
+    struct sockaddr_in dest_addr;
+    RTSPActionServerSetup setup;
+
+    /* find which URL is asked */
+    av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
+    path = path1;
+    if (*path == '/')
+        path++;
+
+    /* now check each stream */
+    for(stream = config.first_stream; stream; stream = stream->next) {
+        if (stream->is_feed || !stream->fmt ||
+            strcmp(stream->fmt->name, "rtp")) {
+            continue;
+        }
+        /* accept aggregate filenames only if single stream */
+        if (!strcmp(path, stream->filename)) {
+            if (stream->nb_streams != 1) {
+                rtsp_reply_error(c, RTSP_STATUS_AGGREGATE);
+                return;
+            }
+            stream_index = 0;
+            goto found;
+        }
+
+        for(stream_index = 0; stream_index < stream->nb_streams;
+            stream_index++) {
+            snprintf(buf, sizeof(buf), "%s/streamid=%d",
+                     stream->filename, stream_index);
+            if (!strcmp(path, buf))
+                goto found;
+        }
+    }
+    /* no stream found */
+    rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
+    return;
+ found:
+
+    /* generate session id if needed */
+    if (h->session_id[0] == '\0') {
+        unsigned random0 = av_lfg_get(&random_state);
+        unsigned random1 = av_lfg_get(&random_state);
+        snprintf(h->session_id, sizeof(h->session_id), "%08x%08x",
+                 random0, random1);
+    }
+
+    /* find RTP session, and create it if none found */
+    rtp_c = find_rtp_session(h->session_id);
+    if (!rtp_c) {
+        /* always prefer UDP */
+        th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP);
+        if (!th) {
+            th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP);
+            if (!th) {
+                rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
+                return;
+            }
+        }
+
+        rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id,
+                                   th->lower_transport);
+        if (!rtp_c) {
+            rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH);
+            return;
+        }
+
+        /* open input stream */
+        if (open_input_stream(rtp_c, "") < 0) {
+            rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
+            return;
+        }
+    }
+
+    /* test if stream is OK (test needed because several SETUP needs
+     * to be done for a given file) */
+    if (rtp_c->stream != stream) {
+        rtsp_reply_error(c, RTSP_STATUS_SERVICE);
+        return;
+    }
+
+    /* test if stream is already set up */
+    if (rtp_c->rtp_ctx[stream_index]) {
+        rtsp_reply_error(c, RTSP_STATUS_STATE);
+        return;
+    }
+
+    /* check transport */
+    th = find_transport(h, rtp_c->rtp_protocol);
+    if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
+                th->client_port_min <= 0)) {
+        rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
+        return;
+    }
+
+    /* setup default options */
+    setup.transport_option[0] = '\0';
+    dest_addr = rtp_c->from_addr;
+    dest_addr.sin_port = htons(th->client_port_min);
+
+    /* setup stream */
+    if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) {
+        rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
+        return;
+    }
+
+    /* now everything is OK, so we can send the connection parameters */
+    rtsp_reply_header(c, RTSP_STATUS_OK);
+    /* session ID */
+    avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id);
+
+    switch(rtp_c->rtp_protocol) {
+    case RTSP_LOWER_TRANSPORT_UDP:
+        rtp_port = ff_rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]);
+        rtcp_port = ff_rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]);
+        avio_printf(c->pb, "Transport: RTP/AVP/UDP;unicast;"
+                    "client_port=%d-%d;server_port=%d-%d",
+                    th->client_port_min, th->client_port_max,
+                    rtp_port, rtcp_port);
+        break;
+    case RTSP_LOWER_TRANSPORT_TCP:
+        avio_printf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d",
+                    stream_index * 2, stream_index * 2 + 1);
+        break;
+    default:
+        break;
+    }
+    if (setup.transport_option[0] != '\0')
+        avio_printf(c->pb, ";%s", setup.transport_option);
+    avio_printf(c->pb, "\r\n");
+
+
+    avio_printf(c->pb, "\r\n");
+}
+
+
+/**
+ * find an RTP connection by using the session ID. Check consistency
+ * with filename
+ */
+static HTTPContext *find_rtp_session_with_url(const char *url,
+                                              const char *session_id)
+{
+    HTTPContext *rtp_c;
+    char path1[1024];
+    const char *path;
+    char buf[1024];
+    int s, len;
+
+    rtp_c = find_rtp_session(session_id);
+    if (!rtp_c)
+        return NULL;
+
+    /* find which URL is asked */
+    av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
+    path = path1;
+    if (*path == '/')
+        path++;
+    if(!strcmp(path, rtp_c->stream->filename)) return rtp_c;
+    for(s=0; s<rtp_c->stream->nb_streams; ++s) {
+      snprintf(buf, sizeof(buf), "%s/streamid=%d",
+        rtp_c->stream->filename, s);
+      if(!strncmp(path, buf, sizeof(buf)))
+        /* XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE
+         * if nb_streams>1? */
+        return rtp_c;
+    }
+    len = strlen(path);
+    if (len > 0 && path[len - 1] == '/' &&
+        !strncmp(path, rtp_c->stream->filename, len - 1))
+        return rtp_c;
+    return NULL;
+}
+
+static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h)
+{
+    HTTPContext *rtp_c;
+
+    rtp_c = find_rtp_session_with_url(url, h->session_id);
+    if (!rtp_c) {
+        rtsp_reply_error(c, RTSP_STATUS_SESSION);
+        return;
+    }
+
+    if (rtp_c->state != HTTPSTATE_SEND_DATA &&
+        rtp_c->state != HTTPSTATE_WAIT_FEED &&
+        rtp_c->state != HTTPSTATE_READY) {
+        rtsp_reply_error(c, RTSP_STATUS_STATE);
+        return;
+    }
+
+    rtp_c->state = HTTPSTATE_SEND_DATA;
+
+    /* now everything is OK, so we can send the connection parameters */
+    rtsp_reply_header(c, RTSP_STATUS_OK);
+    /* session ID */
+    avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id);
+    avio_printf(c->pb, "\r\n");
+}
+
+static void rtsp_cmd_interrupt(HTTPContext *c, const char *url,
+                               RTSPMessageHeader *h, int pause_only)
+{
+    HTTPContext *rtp_c;
+
+    rtp_c = find_rtp_session_with_url(url, h->session_id);
+    if (!rtp_c) {
+        rtsp_reply_error(c, RTSP_STATUS_SESSION);
+        return;
+    }
+
+    if (pause_only) {
+        if (rtp_c->state != HTTPSTATE_SEND_DATA &&
+            rtp_c->state != HTTPSTATE_WAIT_FEED) {
+            rtsp_reply_error(c, RTSP_STATUS_STATE);
+            return;
+        }
+        rtp_c->state = HTTPSTATE_READY;
+        rtp_c->first_pts = AV_NOPTS_VALUE;
+    }
+
+    /* now everything is OK, so we can send the connection parameters */
+    rtsp_reply_header(c, RTSP_STATUS_OK);
+    /* session ID */
+    avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id);
+    avio_printf(c->pb, "\r\n");
+
+    if (!pause_only)
+        close_connection(rtp_c);
+}
+
+/********************************************************************/
+/* RTP handling */
+
+static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
+                                       FFServerStream *stream,
+                                       const char *session_id,
+                                       enum RTSPLowerTransport rtp_protocol)
+{
+    HTTPContext *c = NULL;
+    const char *proto_str;
+
+    /* XXX: should output a warning page when coming
+     * close to the connection limit */
+    if (nb_connections >= config.nb_max_connections)
+        goto fail;
+
+    /* add a new connection */
+    c = av_mallocz(sizeof(HTTPContext));
+    if (!c)
+        goto fail;
+
+    c->fd = -1;
+    c->poll_entry = NULL;
+    c->from_addr = *from_addr;
+    c->buffer_size = IOBUFFER_INIT_SIZE;
+    c->buffer = av_malloc(c->buffer_size);
+    if (!c->buffer)
+        goto fail;
+    nb_connections++;
+    c->stream = stream;
+    av_strlcpy(c->session_id, session_id, sizeof(c->session_id));
+    c->state = HTTPSTATE_READY;
+    c->is_packetized = 1;
+    c->rtp_protocol = rtp_protocol;
+
+    /* protocol is shown in statistics */
+    switch(c->rtp_protocol) {
+    case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
+        proto_str = "MCAST";
+        break;
+    case RTSP_LOWER_TRANSPORT_UDP:
+        proto_str = "UDP";
+        break;
+    case RTSP_LOWER_TRANSPORT_TCP:
+        proto_str = "TCP";
+        break;
+    default:
+        proto_str = "???";
+        break;
+    }
+    av_strlcpy(c->protocol, "RTP/", sizeof(c->protocol));
+    av_strlcat(c->protocol, proto_str, sizeof(c->protocol));
+
+    current_bandwidth += stream->bandwidth;
+
+    c->next = first_http_ctx;
+    first_http_ctx = c;
+    return c;
+
+ fail:
+    if (c) {
+        av_freep(&c->buffer);
+        av_free(c);
+    }
+    return NULL;
+}
+
+/**
+ * add a new RTP stream in an RTP connection (used in RTSP SETUP
+ * command). If RTP/TCP protocol is used, TCP connection 'rtsp_c' is
+ * used.
+ */
+static int rtp_new_av_stream(HTTPContext *c,
+                             int stream_index, struct sockaddr_in *dest_addr,
+                             HTTPContext *rtsp_c)
+{
+    AVFormatContext *ctx;
+    AVStream *st;
+    char *ipaddr;
+    URLContext *h = NULL;
+    uint8_t *dummy_buf;
+    int max_packet_size;
+    void *st_internal;
+
+    /* now we can open the relevant output stream */
+    ctx = avformat_alloc_context();
+    if (!ctx)
+        return -1;
+    ctx->oformat = av_guess_format("rtp", NULL, NULL);
+
+    st = avformat_new_stream(ctx, NULL);
+    if (!st)
+        goto fail;
+
+    st_internal = st->internal;
+
+    if (!c->stream->feed ||
+        c->stream->feed == c->stream)
+        unlayer_stream(st, c->stream->streams[stream_index]);
+    else
+        unlayer_stream(st,
+               c->stream->feed->streams[c->stream->feed_streams[stream_index]]);
+    av_assert0(st->priv_data == NULL);
+    av_assert0(st->internal == st_internal);
+
+    /* build destination RTP address */
+    ipaddr = inet_ntoa(dest_addr->sin_addr);
+
+    switch(c->rtp_protocol) {
+    case RTSP_LOWER_TRANSPORT_UDP:
+    case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
+        /* RTP/UDP case */
+
+        /* XXX: also pass as parameter to function ? */
+        if (c->stream->is_multicast) {
+            int ttl;
+            ttl = c->stream->multicast_ttl;
+            if (!ttl)
+                ttl = 16;
+            snprintf(ctx->filename, sizeof(ctx->filename),
+                     "rtp://%s:%d?multicast=1&ttl=%d",
+                     ipaddr, ntohs(dest_addr->sin_port), ttl);
+        } else {
+            snprintf(ctx->filename, sizeof(ctx->filename),
+                     "rtp://%s:%d", ipaddr, ntohs(dest_addr->sin_port));
+        }
+
+        if (ffurl_open(&h, ctx->filename, AVIO_FLAG_WRITE, NULL, NULL) < 0)
+            goto fail;
+        c->rtp_handles[stream_index] = h;
+        max_packet_size = h->max_packet_size;
+        break;
+    case RTSP_LOWER_TRANSPORT_TCP:
+        /* RTP/TCP case */
+        c->rtsp_c = rtsp_c;
+        max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
+        break;
+    default:
+        goto fail;
+    }
+
+    http_log("%s:%d - - \"PLAY %s/streamid=%d %s\"\n",
+             ipaddr, ntohs(dest_addr->sin_port),
+             c->stream->filename, stream_index, c->protocol);
+
+    /* normally, no packets should be output here, but the packet size may
+     * be checked */
+    if (ffio_open_dyn_packet_buf(&ctx->pb, max_packet_size) < 0)
+        /* XXX: close stream */
+        goto fail;
+
+    if (avformat_write_header(ctx, NULL) < 0) {
+    fail:
+        if (h)
+            ffurl_close(h);
+        av_free(st);
+        av_free(ctx);
+        return -1;
+    }
+    avio_close_dyn_buf(ctx->pb, &dummy_buf);
+    ctx->pb = NULL;
+    av_free(dummy_buf);
+
+    c->rtp_ctx[stream_index] = ctx;
+    return 0;
+}
+
+/********************************************************************/
+/* ffserver initialization */
+
+/* FIXME: This code should use avformat_new_stream() */
+static LayeredAVStream *add_av_stream1(FFServerStream *stream,
+                                AVCodecContext *codec, int copy)
+{
+    LayeredAVStream *fst;
+
+    if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))
+        return NULL;
+
+    fst = av_mallocz(sizeof(*fst));
+    if (!fst)
+        return NULL;
+    if (copy) {
+        fst->codec = avcodec_alloc_context3(codec->codec);
+        if (!fst->codec) {
+            av_free(fst);
+            return NULL;
+        }
+        avcodec_copy_context(fst->codec, codec);
+    } else
+        /* live streams must use the actual feed's codec since it may be
+         * updated later to carry extradata needed by them.
+         */
+        fst->codec = codec;
+
+    //NOTE we previously allocated internal & internal->avctx, these seemed uneeded though
+    fst->codecpar = avcodec_parameters_alloc();
+    fst->index = stream->nb_streams;
+    fst->time_base = codec->time_base;
+    fst->pts_wrap_bits = 33;
+    fst->sample_aspect_ratio = codec->sample_aspect_ratio;
+    stream->streams[stream->nb_streams++] = fst;
+    return fst;
+}
+
+/* return the stream number in the feed */
+static int add_av_stream(FFServerStream *feed, LayeredAVStream *st)
+{
+    LayeredAVStream *fst;
+    AVCodecContext *av, *av1;
+    int i;
+
+    av = st->codec;
+    for(i=0;i<feed->nb_streams;i++) {
+        av1 = feed->streams[i]->codec;
+        if (av1->codec_id == av->codec_id &&
+            av1->codec_type == av->codec_type &&
+            av1->bit_rate == av->bit_rate) {
+
+            switch(av->codec_type) {
+            case AVMEDIA_TYPE_AUDIO:
+                if (av1->channels == av->channels &&
+                    av1->sample_rate == av->sample_rate)
+                    return i;
+                break;
+            case AVMEDIA_TYPE_VIDEO:
+                if (av1->width == av->width &&
+                    av1->height == av->height &&
+                    av1->time_base.den == av->time_base.den &&
+                    av1->time_base.num == av->time_base.num &&
+                    av1->gop_size == av->gop_size)
+                    return i;
+                break;
+            default:
+                abort();
+            }
+        }
+    }
+
+    fst = add_av_stream1(feed, av, 0);
+    if (!fst)
+        return -1;
+    if (st->recommended_encoder_configuration)
+        fst->recommended_encoder_configuration =
+            av_strdup(st->recommended_encoder_configuration);
+    return feed->nb_streams - 1;
+}
+
+static void remove_stream(FFServerStream *stream)
+{
+    FFServerStream **ps;
+    ps = &config.first_stream;
+    while (*ps) {
+        if (*ps == stream)
+            *ps = (*ps)->next;
+        else
+            ps = &(*ps)->next;
+    }
+}
+
+/* compute the needed AVStream for each file */
+static void build_file_streams(void)
+{
+    FFServerStream *stream;
+    AVFormatContext *infile;
+    int i, ret;
+
+    /* gather all streams */
+    for(stream = config.first_stream; stream; stream = stream->next) {
+        infile = NULL;
+
+        if (stream->stream_type != STREAM_TYPE_LIVE || stream->feed)
+            continue;
+
+        /* the stream comes from a file */
+        /* try to open the file */
+        /* open stream */
+
+
+        /* specific case: if transport stream output to RTP,
+         * we use a raw transport stream reader */
+        if (stream->fmt && !strcmp(stream->fmt->name, "rtp"))
+            av_dict_set(&stream->in_opts, "mpeg2ts_compute_pcr", "1", 0);
+
+        if (!stream->feed_filename[0]) {
+            http_log("Unspecified feed file for stream '%s'\n",
+                     stream->filename);
+            goto fail;
+        }
+
+        http_log("Opening feed file '%s' for stream '%s'\n",
+                 stream->feed_filename, stream->filename);
+
+        ret = avformat_open_input(&infile, stream->feed_filename,
+                                  stream->ifmt, &stream->in_opts);
+        if (ret < 0) {
+            http_log("Could not open '%s': %s\n", stream->feed_filename,
+                     av_err2str(ret));
+            /* remove stream (no need to spend more time on it) */
+        fail:
+            remove_stream(stream);
+        } else {
+            /* find all the AVStreams inside and reference them in
+             * 'stream' */
+            if (avformat_find_stream_info(infile, NULL) < 0) {
+                http_log("Could not find codec parameters from '%s'\n",
+                         stream->feed_filename);
+                avformat_close_input(&infile);
+                goto fail;
+            }
+
+            for(i=0;i<infile->nb_streams;i++)
+                add_av_stream1(stream, infile->streams[i]->codec, 1);
+
+            avformat_close_input(&infile);
+        }
+    }
+}
+
+static inline
+int check_codec_match(LayeredAVStream *ccf, AVStream *ccs, int stream)
+{
+    int matches = 1;
+
+/* FIXME: Missed check on AVCodecContext.flags */
+#define CHECK_CODEC(x)  (ccf->codecpar->x != ccs->codecpar->x)
+    if (CHECK_CODEC(codec_id) || CHECK_CODEC(codec_type)) {
+        http_log("Codecs do not match for stream %d\n", stream);
+        matches = 0;
+    } else if (CHECK_CODEC(bit_rate)) {
+        http_log("Codec bitrates do not match for stream %d\n", stream);
+        matches = 0;
+    } else if (ccf->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
+        if (av_cmp_q(ccf->time_base, ccs->time_base) ||
+            CHECK_CODEC(width) || CHECK_CODEC(height)) {
+            http_log("Codec width, height or framerate do not match for stream %d\n", stream);
+            matches = 0;
+        }
+    } else if (ccf->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
+        if (CHECK_CODEC(sample_rate) ||
+            CHECK_CODEC(channels) ||
+            CHECK_CODEC(frame_size)) {
+            http_log("Codec sample_rate, channels, frame_size do not match for stream %d\n", stream);
+            matches = 0;
+        }
+    } else {
+        http_log("Unknown codec type for stream %d\n", stream);
+        matches = 0;
+    }
+
+    return matches;
+}
+
+/* compute the needed AVStream for each feed */
+static int build_feed_streams(void)
+{
+    FFServerStream *stream, *feed;
+    int i, fd;
+
+    /* gather all streams */
+    for(stream = config.first_stream; stream; stream = stream->next) {
+        feed = stream->feed;
+        if (!feed)
+            continue;
+
+        if (stream->is_feed) {
+            for(i=0;i<stream->nb_streams;i++)
+                stream->feed_streams[i] = i;
+            continue;
+        }
+        /* we handle a stream coming from a feed */
+        for(i=0;i<stream->nb_streams;i++)
+            stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]);
+    }
+
+    /* create feed files if needed */
+    for(feed = config.first_feed; feed; feed = feed->next_feed) {
+
+        if (avio_check(feed->feed_filename, AVIO_FLAG_READ) > 0) {
+            AVFormatContext *s = NULL;
+            int matches = 0;
+
+            /* See if it matches */
+
+            if (avformat_open_input(&s, feed->feed_filename, NULL, NULL) < 0) {
+                http_log("Deleting feed file '%s' as it appears "
+                            "to be corrupt\n",
+                         feed->feed_filename);
+                goto drop;
+            }
+
+            /* set buffer size */
+            if (ffio_set_buf_size(s->pb, FFM_PACKET_SIZE) < 0) {
+                http_log("Failed to set buffer size\n");
+                avformat_close_input(&s);
+                goto bail;
+            }
+
+            /* Now see if it matches */
+            if (s->nb_streams != feed->nb_streams) {
+                http_log("Deleting feed file '%s' as stream counts "
+                            "differ (%d != %d)\n",
+                         feed->feed_filename, s->nb_streams, feed->nb_streams);
+                goto drop;
+            }
+
+            matches = 1;
+            for(i=0;i<s->nb_streams;i++) {
+                AVStream *ss;
+                LayeredAVStream *sf;
+
+                sf = feed->streams[i];
+                ss = s->streams[i];
+
+                if (sf->index != ss->index || sf->id != ss->id) {
+                    http_log("Index & Id do not match for stream %d (%s)\n",
+                             i, feed->feed_filename);
+                    matches = 0;
+                    break;
+                }
+
+                matches = check_codec_match (sf, ss, i);
+                if (!matches)
+                    break;
+            }
+
+drop:
+            if (s)
+                avformat_close_input(&s);
+
+            if (!matches) {
+                if (feed->readonly) {
+                    http_log("Unable to delete read-only feed file '%s'\n",
+                             feed->feed_filename);
+                    goto bail;
+                }
+                unlink(feed->feed_filename);
+            }
+        }
+
+        if (avio_check(feed->feed_filename, AVIO_FLAG_WRITE) <= 0) {
+            AVFormatContext *s = avformat_alloc_context();
+
+            if (!s) {
+                http_log("Failed to allocate context\n");
+                goto bail;
+            }
+
+            if (feed->readonly) {
+                http_log("Unable to create feed file '%s' as it is "
+                            "marked readonly\n",
+                         feed->feed_filename);
+                avformat_free_context(s);
+                goto bail;
+            }
+
+            /* only write the header of the ffm file */
+            if (avio_open(&s->pb, feed->feed_filename, AVIO_FLAG_WRITE) < 0) {
+                http_log("Could not open output feed file '%s'\n",
+                         feed->feed_filename);
+                avformat_free_context(s);
+                goto bail;
+            }
+            s->oformat = feed->fmt;
+            for (i = 0; i<feed->nb_streams; i++) {
+                AVStream *st = avformat_new_stream(s, NULL); // FIXME free this
+                if (!st) {
+                    http_log("Failed to allocate stream\n");
+                    goto bail;
+                }
+                unlayer_stream(st, feed->streams[i]);
+            }
+            if (avformat_write_header(s, NULL) < 0) {
+                http_log("Container doesn't support the required parameters\n");
+                avio_closep(&s->pb);
+                s->streams = NULL;
+                s->nb_streams = 0;
+                avformat_free_context(s);
+                goto bail;
+            }
+            /* XXX: need better API */
+            av_freep(&s->priv_data);
+            avio_closep(&s->pb);
+            s->streams = NULL;
+            s->nb_streams = 0;
+            avformat_free_context(s);
+        }
+
+        /* get feed size and write index */
+        fd = open(feed->feed_filename, O_RDONLY);
+        if (fd < 0) {
+            http_log("Could not open output feed file '%s'\n",
+                    feed->feed_filename);
+            goto bail;
+        }
+
+        feed->feed_write_index = FFMAX(ffm_read_write_index(fd),
+                                       FFM_PACKET_SIZE);
+        feed->feed_size = lseek(fd, 0, SEEK_END);
+        /* ensure that we do not wrap before the end of file */
+        if (feed->feed_max_size && feed->feed_max_size < feed->feed_size)
+            feed->feed_max_size = feed->feed_size;
+
+        close(fd);
+    }
+    return 0;
+
+bail:
+    return -1;
+}
+
+/* compute the bandwidth used by each stream */
+static void compute_bandwidth(void)
+{
+    unsigned bandwidth;
+    int i;
+    FFServerStream *stream;
+
+    for(stream = config.first_stream; stream; stream = stream->next) {
+        bandwidth = 0;
+        for(i=0;i<stream->nb_streams;i++) {
+            LayeredAVStream *st = stream->streams[i];
+            switch(st->codec->codec_type) {
+            case AVMEDIA_TYPE_AUDIO:
+            case AVMEDIA_TYPE_VIDEO:
+                bandwidth += st->codec->bit_rate;
+                break;
+            default:
+                break;
+            }
+        }
+        stream->bandwidth = (bandwidth + 999) / 1000;
+    }
+}
+
+static void handle_child_exit(int sig)
+{
+    pid_t pid;
+    int status;
+    time_t uptime;
+
+    while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
+        FFServerStream *feed;
+
+        for (feed = config.first_feed; feed; feed = feed->next) {
+            if (feed->pid != pid)
+                continue;
+
+            uptime = time(0) - feed->pid_start;
+            feed->pid = 0;
+            fprintf(stderr,
+                    "%s: Pid %"PRId64" exited with status %d after %"PRId64" "
+                        "seconds\n",
+                    feed->filename, (int64_t) pid, status, (int64_t)uptime);
+
+            if (uptime < 30)
+                /* Turn off any more restarts */
+                ffserver_free_child_args(&feed->child_argv);
+        }
+    }
+
+    need_to_start_children = 1;
+}
+
+static void opt_debug(void)
+{
+    config.debug = 1;
+    snprintf(config.logfilename, sizeof(config.logfilename), "-");
+}
+
+void show_help_default(const char *opt, const char *arg)
+{
+    printf("usage: ffserver [options]\n"
+           "Hyper fast multi format Audio/Video streaming server\n");
+    printf("\n");
+    show_help_options(options, "Main options:", 0, 0, 0);
+}
+
+static const OptionDef options[] = {
+    CMDUTILS_COMMON_OPTIONS
+    { "n", OPT_BOOL, {(void *)&no_launch }, "enable no-launch mode" },
+    { "d", 0, {(void*)opt_debug}, "enable debug mode" },
+    { "f", HAS_ARG | OPT_STRING, {(void*)&config.filename }, "use configfile instead of /etc/ffserver.conf", "configfile" },
+    { NULL },
+};
+
+int main(int argc, char **argv)
+{
+    struct sigaction sigact = { { 0 } };
+    int cfg_parsed;
+    int ret = EXIT_FAILURE;
+
+    init_dynload();
+
+    config.filename = av_strdup("/etc/ffserver.conf");
+
+    parse_loglevel(argc, argv, options);
+    av_register_all();
+    avformat_network_init();
+
+    show_banner(argc, argv, options);
+
+    my_program_name = argv[0];
+
+    parse_options(NULL, argc, argv, options, NULL);
+
+    unsetenv("http_proxy");             /* Kill the http_proxy */
+
+    av_lfg_init(&random_state, av_get_random_seed());
+
+    sigact.sa_handler = handle_child_exit;
+    sigact.sa_flags = SA_NOCLDSTOP | SA_RESTART;
+    sigaction(SIGCHLD, &sigact, 0);
+
+    if ((cfg_parsed = ffserver_parse_ffconfig(config.filename, &config)) < 0) {
+        fprintf(stderr, "Error reading configuration file '%s': %s\n",
+                config.filename, av_err2str(cfg_parsed));
+        goto bail;
+    }
+
+    /* open log file if needed */
+    if (config.logfilename[0] != '\0') {
+        if (!strcmp(config.logfilename, "-"))
+            logfile = stdout;
+        else
+            logfile = fopen(config.logfilename, "a");
+        av_log_set_callback(http_av_log);
+    }
+
+    build_file_streams();
+
+    if (build_feed_streams() < 0) {
+        http_log("Could not setup feed streams\n");
+        goto bail;
+    }
+
+    compute_bandwidth();
+
+    /* signal init */
+    signal(SIGPIPE, SIG_IGN);
+
+    if (http_server() < 0) {
+        http_log("Could not start server\n");
+        goto bail;
+    }
+
+    ret=EXIT_SUCCESS;
+
+bail:
+    av_freep (&config.filename);
+    avformat_network_deinit();
+    return ret;
+}
diff --git a/fftools/ffserver_config.c b/fftools/ffserver_config.c
new file mode 100644
index 0000000000..54135be989
--- /dev/null
+++ b/fftools/ffserver_config.c
@@ -0,0 +1,1325 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <float.h>
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/avstring.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/avassert.h"
+
+#include "cmdutils.h"
+#include "ffserver_config.h"
+
+#define MAX_CHILD_ARGS 64
+
+static int ffserver_save_avoption(const char *opt, const char *arg, int type,
+                                  FFServerConfig *config);
+static void vreport_config_error(const char *filename, int line_num,
+                                 int log_level, int *errors, const char *fmt,
+                                 va_list vl);
+static void report_config_error(const char *filename, int line_num,
+                                int log_level, int *errors, const char *fmt,
+                                ...);
+
+#define ERROR(...) report_config_error(config->filename, config->line_num,\
+                                       AV_LOG_ERROR, &config->errors, __VA_ARGS__)
+#define WARNING(...) report_config_error(config->filename, config->line_num,\
+                                         AV_LOG_WARNING, &config->warnings, __VA_ARGS__)
+
+/* FIXME: make ffserver work with IPv6 */
+/* resolve host with also IP address parsing */
+static int resolve_host(struct in_addr *sin_addr, const char *hostname)
+{
+
+    if (!ff_inet_aton(hostname, sin_addr)) {
+#if HAVE_GETADDRINFO
+        struct addrinfo *ai, *cur;
+        struct addrinfo hints = { 0 };
+        hints.ai_family = AF_INET;
+        if (getaddrinfo(hostname, NULL, &hints, &ai))
+            return -1;
+        /* getaddrinfo returns a linked list of addrinfo structs.
+         * Even if we set ai_family = AF_INET above, make sure
+         * that the returned one actually is of the correct type. */
+        for (cur = ai; cur; cur = cur->ai_next) {
+            if (cur->ai_family == AF_INET) {
+                *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
+                freeaddrinfo(ai);
+                return 0;
+            }
+        }
+        freeaddrinfo(ai);
+        return -1;
+#else
+        struct hostent *hp;
+        hp = gethostbyname(hostname);
+        if (!hp)
+            return -1;
+        memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
+#endif
+    }
+    return 0;
+}
+
+void ffserver_get_arg(char *buf, int buf_size, const char **pp)
+{
+    const char *p;
+    char *q;
+    int quote = 0;
+
+    p = *pp;
+    q = buf;
+
+    while (av_isspace(*p)) p++;
+
+    if (*p == '\"' || *p == '\'')
+        quote = *p++;
+
+    while (*p != '\0') {
+        if (quote && *p == quote || !quote && av_isspace(*p))
+            break;
+        if ((q - buf) < buf_size - 1)
+            *q++ = *p;
+        p++;
+    }
+
+    *q = '\0';
+    if (quote && *p == quote)
+        p++;
+    *pp = p;
+}
+
+void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,
+                            FFServerIPAddressACL *ext_acl,
+                            const char *p, const char *filename, int line_num)
+{
+    char arg[1024];
+    FFServerIPAddressACL acl;
+    FFServerIPAddressACL *nacl;
+    FFServerIPAddressACL **naclp;
+
+    ffserver_get_arg(arg, sizeof(arg), &p);
+    if (av_strcasecmp(arg, "allow") == 0)
+        acl.action = IP_ALLOW;
+    else if (av_strcasecmp(arg, "deny") == 0)
+        acl.action = IP_DENY;
+    else {
+        fprintf(stderr, "%s:%d: ACL action '%s' should be ALLOW or DENY.\n",
+                filename, line_num, arg);
+        goto bail;
+    }
+
+    ffserver_get_arg(arg, sizeof(arg), &p);
+
+    if (resolve_host(&acl.first, arg)) {
+        fprintf(stderr,
+                "%s:%d: ACL refers to invalid host or IP address '%s'\n",
+                filename, line_num, arg);
+        goto bail;
+    }
+
+    acl.last = acl.first;
+
+    ffserver_get_arg(arg, sizeof(arg), &p);
+
+    if (arg[0]) {
+        if (resolve_host(&acl.last, arg)) {
+            fprintf(stderr,
+                    "%s:%d: ACL refers to invalid host or IP address '%s'\n",
+                    filename, line_num, arg);
+            goto bail;
+        }
+    }
+
+    nacl = av_mallocz(sizeof(*nacl));
+    if (!nacl) {
+        fprintf(stderr, "Failed to allocate FFServerIPAddressACL\n");
+        goto bail;
+    }
+
+    naclp = 0;
+
+    acl.next = 0;
+    *nacl = acl;
+
+    if (stream)
+        naclp = &stream->acl;
+    else if (feed)
+        naclp = &feed->acl;
+    else if (ext_acl)
+        naclp = &ext_acl;
+    else
+        fprintf(stderr, "%s:%d: ACL found not in <Stream> or <Feed>\n",
+                filename, line_num);
+
+    if (naclp) {
+        while (*naclp)
+            naclp = &(*naclp)->next;
+
+        *naclp = nacl;
+    } else
+        av_free(nacl);
+
+bail:
+  return;
+
+}
+
+/* add a codec and set the default parameters */
+static void add_codec(FFServerStream *stream, AVCodecContext *av,
+                      FFServerConfig *config)
+{
+    LayeredAVStream *st;
+    AVDictionary **opts, *recommended = NULL;
+    char *enc_config;
+
+    if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))
+        return;
+
+    opts = av->codec_type == AVMEDIA_TYPE_AUDIO ?
+           &config->audio_opts : &config->video_opts;
+    av_dict_copy(&recommended, *opts, 0);
+    av_opt_set_dict2(av->priv_data, opts, AV_OPT_SEARCH_CHILDREN);
+    av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);
+
+    if (av_dict_count(*opts))
+        av_log(NULL, AV_LOG_WARNING,
+               "Something is wrong, %d options are not set!\n",
+               av_dict_count(*opts));
+
+    if (!config->stream_use_defaults) {
+        switch(av->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            if (av->bit_rate == 0)
+                report_config_error(config->filename, config->line_num,
+                                    AV_LOG_ERROR, &config->errors,
+                                    "audio bit rate is not set\n");
+            if (av->sample_rate == 0)
+                report_config_error(config->filename, config->line_num,
+                                    AV_LOG_ERROR, &config->errors,
+                                    "audio sample rate is not set\n");
+            break;
+        case AVMEDIA_TYPE_VIDEO:
+            if (av->width == 0 || av->height == 0)
+                report_config_error(config->filename, config->line_num,
+                                    AV_LOG_ERROR, &config->errors,
+                                    "video size is not set\n");
+            break;
+        default:
+            av_assert0(0);
+        }
+        goto done;
+    }
+
+    /* stream_use_defaults = true */
+
+    /* compute default parameters */
+    switch(av->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        if (!av_dict_get(recommended, "b", NULL, 0)) {
+            av->bit_rate = 64000;
+            av_dict_set_int(&recommended, "b", av->bit_rate, 0);
+            WARNING("Setting default value for audio bit rate = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->bit_rate);
+        }
+        if (!av_dict_get(recommended, "ar", NULL, 0)) {
+            av->sample_rate = 22050;
+            av_dict_set_int(&recommended, "ar", av->sample_rate, 0);
+            WARNING("Setting default value for audio sample rate = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->sample_rate);
+        }
+        if (!av_dict_get(recommended, "ac", NULL, 0)) {
+            av->channels = 1;
+            av_dict_set_int(&recommended, "ac", av->channels, 0);
+            WARNING("Setting default value for audio channel count = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->channels);
+        }
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        if (!av_dict_get(recommended, "b", NULL, 0)) {
+            av->bit_rate = 64000;
+            av_dict_set_int(&recommended, "b", av->bit_rate, 0);
+            WARNING("Setting default value for video bit rate = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->bit_rate);
+        }
+        if (!av_dict_get(recommended, "time_base", NULL, 0)){
+            av->time_base.den = 5;
+            av->time_base.num = 1;
+            av_dict_set(&recommended, "time_base", "1/5", 0);
+            WARNING("Setting default value for video frame rate = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->time_base.den);
+        }
+        if (!av_dict_get(recommended, "video_size", NULL, 0)) {
+            av->width = 160;
+            av->height = 128;
+            av_dict_set(&recommended, "video_size", "160x128", 0);
+            WARNING("Setting default value for video size = %dx%d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->width, av->height);
+        }
+        /* Bitrate tolerance is less for streaming */
+        if (!av_dict_get(recommended, "bt", NULL, 0)) {
+            av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
+                      (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
+            av_dict_set_int(&recommended, "bt", av->bit_rate_tolerance, 0);
+            WARNING("Setting default value for video bit rate tolerance = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->bit_rate_tolerance);
+        }
+
+        if (!av_dict_get(recommended, "rc_eq", NULL, 0)) {
+            av->rc_eq = av_strdup("tex^qComp");
+            av_dict_set(&recommended, "rc_eq", "tex^qComp", 0);
+            WARNING("Setting default value for video rate control equation = "
+                    "%s. Use NoDefaults to disable it.\n",
+                    av->rc_eq);
+        }
+        if (!av_dict_get(recommended, "maxrate", NULL, 0)) {
+            av->rc_max_rate = av->bit_rate * 2;
+            av_dict_set_int(&recommended, "maxrate", av->rc_max_rate, 0);
+            WARNING("Setting default value for video max rate = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->rc_max_rate);
+        }
+
+        if (av->rc_max_rate && !av_dict_get(recommended, "bufsize", NULL, 0)) {
+            av->rc_buffer_size = av->rc_max_rate;
+            av_dict_set_int(&recommended, "bufsize", av->rc_buffer_size, 0);
+            WARNING("Setting default value for video buffer size = %d. "
+                    "Use NoDefaults to disable it.\n",
+                    av->rc_buffer_size);
+        }
+        break;
+    default:
+        abort();
+    }
+
+done:
+    st = av_mallocz(sizeof(*st));
+    if (!st)
+        return;
+    av_dict_get_string(recommended, &enc_config, '=', ',');
+    av_dict_free(&recommended);
+    st->recommended_encoder_configuration = enc_config;
+    st->codec = av;
+    st->codecpar = avcodec_parameters_alloc();
+    avcodec_parameters_from_context(st->codecpar, av);
+    stream->streams[stream->nb_streams++] = st;
+}
+
+static int ffserver_set_codec(AVCodecContext *ctx, const char *codec_name,
+                              FFServerConfig *config)
+{
+    int ret;
+    AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
+    if (!codec || codec->type != ctx->codec_type) {
+        report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                            &config->errors,
+                            "Invalid codec name: '%s'\n", codec_name);
+        return 0;
+    }
+    if (ctx->codec_id == AV_CODEC_ID_NONE && !ctx->priv_data) {
+        if ((ret = avcodec_get_context_defaults3(ctx, codec)) < 0)
+            return ret;
+        ctx->codec = codec;
+    }
+    if (ctx->codec_id != codec->id)
+        report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                            &config->errors,
+                            "Inconsistent configuration: trying to set '%s' "
+                            "codec option, but '%s' codec is used previously\n",
+                            codec_name, avcodec_get_name(ctx->codec_id));
+    return 0;
+}
+
+static int ffserver_opt_preset(const char *arg, int type, FFServerConfig *config)
+{
+    FILE *f=NULL;
+    char filename[1000], tmp[1000], tmp2[1000], line[1000];
+    int ret = 0;
+    AVCodecContext *avctx;
+    const AVCodec *codec;
+
+    switch(type) {
+    case AV_OPT_FLAG_AUDIO_PARAM:
+        avctx = config->dummy_actx;
+        break;
+    case AV_OPT_FLAG_VIDEO_PARAM:
+        avctx = config->dummy_vctx;
+        break;
+    default:
+        av_assert0(0);
+    }
+    codec = avcodec_find_encoder(avctx->codec_id);
+
+    if (!(f = get_preset_file(filename, sizeof(filename), arg, 0,
+                              codec ? codec->name : NULL))) {
+        av_log(NULL, AV_LOG_ERROR, "File for preset '%s' not found\n", arg);
+        return AVERROR(EINVAL);
+    }
+
+    while(!feof(f)){
+        int e= fscanf(f, "%999[^\n]\n", line) - 1;
+        if(line[0] == '#' && !e)
+            continue;
+        e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;
+        if(e){
+            av_log(NULL, AV_LOG_ERROR, "%s: Invalid syntax: '%s'\n", filename,
+                   line);
+            ret = AVERROR(EINVAL);
+            break;
+        }
+        if (!strcmp(tmp, "acodec") && avctx->codec_type == AVMEDIA_TYPE_AUDIO ||
+            !strcmp(tmp, "vcodec") && avctx->codec_type == AVMEDIA_TYPE_VIDEO)
+        {
+            if (ffserver_set_codec(avctx, tmp2, config) < 0)
+                break;
+        } else if (!strcmp(tmp, "scodec")) {
+            av_log(NULL, AV_LOG_ERROR, "Subtitles preset found.\n");
+            ret = AVERROR(EINVAL);
+            break;
+        } else if (ffserver_save_avoption(tmp, tmp2, type, config) < 0)
+            break;
+    }
+
+    fclose(f);
+
+    return ret;
+}
+
+static AVOutputFormat *ffserver_guess_format(const char *short_name,
+                                             const char *filename,
+                                             const char *mime_type)
+{
+    AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
+
+    if (fmt) {
+        AVOutputFormat *stream_fmt;
+        char stream_format_name[64];
+
+        snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream",
+                fmt->name);
+        stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
+
+        if (stream_fmt)
+            fmt = stream_fmt;
+    }
+
+    return fmt;
+}
+
+static void vreport_config_error(const char *filename, int line_num,
+                                 int log_level, int *errors, const char *fmt,
+                                 va_list vl)
+{
+    av_log(NULL, log_level, "%s:%d: ", filename, line_num);
+    av_vlog(NULL, log_level, fmt, vl);
+    if (errors)
+        (*errors)++;
+}
+
+static void report_config_error(const char *filename, int line_num,
+                                int log_level, int *errors,
+                                const char *fmt, ...)
+{
+    va_list vl;
+    va_start(vl, fmt);
+    vreport_config_error(filename, line_num, log_level, errors, fmt, vl);
+    va_end(vl);
+}
+
+static int ffserver_set_int_param(int *dest, const char *value, int factor,
+                                  int min, int max, FFServerConfig *config,
+                                  const char *error_msg, ...)
+{
+    int tmp;
+    char *tailp;
+    if (!value || !value[0])
+        goto error;
+    errno = 0;
+    tmp = strtol(value, &tailp, 0);
+    if (tmp < min || tmp > max)
+        goto error;
+    if (factor) {
+        if (tmp == INT_MIN || FFABS(tmp) > INT_MAX / FFABS(factor))
+            goto error;
+        tmp *= factor;
+    }
+    if (tailp[0] || errno)
+        goto error;
+    if (dest)
+        *dest = tmp;
+    return 0;
+  error:
+    if (config) {
+        va_list vl;
+        va_start(vl, error_msg);
+        vreport_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                &config->errors, error_msg, vl);
+        va_end(vl);
+    }
+    return AVERROR(EINVAL);
+}
+
+static int ffserver_set_float_param(float *dest, const char *value,
+                                    float factor, float min, float max,
+                                    FFServerConfig *config,
+                                    const char *error_msg, ...)
+{
+    double tmp;
+    char *tailp;
+    if (!value || !value[0])
+        goto error;
+    errno = 0;
+    tmp = strtod(value, &tailp);
+    if (tmp < min || tmp > max)
+        goto error;
+    if (factor)
+        tmp *= factor;
+    if (tailp[0] || errno)
+        goto error;
+    if (dest)
+        *dest = tmp;
+    return 0;
+  error:
+    if (config) {
+        va_list vl;
+        va_start(vl, error_msg);
+        vreport_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                &config->errors, error_msg, vl);
+        va_end(vl);
+    }
+    return AVERROR(EINVAL);
+}
+
+static int ffserver_save_avoption(const char *opt, const char *arg, int type,
+                                  FFServerConfig *config)
+{
+    static int hinted = 0;
+    int ret = 0;
+    AVDictionaryEntry *e;
+    const AVOption *o = NULL;
+    const char *option = NULL;
+    const char *codec_name = NULL;
+    char buff[1024];
+    AVCodecContext *ctx;
+    AVDictionary **dict;
+    enum AVCodecID guessed_codec_id;
+
+    switch (type) {
+    case AV_OPT_FLAG_VIDEO_PARAM:
+        ctx = config->dummy_vctx;
+        dict = &config->video_opts;
+        guessed_codec_id = config->guessed_video_codec_id != AV_CODEC_ID_NONE ?
+                           config->guessed_video_codec_id : AV_CODEC_ID_H264;
+        break;
+    case AV_OPT_FLAG_AUDIO_PARAM:
+        ctx = config->dummy_actx;
+        dict = &config->audio_opts;
+        guessed_codec_id = config->guessed_audio_codec_id != AV_CODEC_ID_NONE ?
+                           config->guessed_audio_codec_id : AV_CODEC_ID_AAC;
+        break;
+    default:
+        av_assert0(0);
+    }
+
+    if (strchr(opt, ':')) {
+        //explicit private option
+        snprintf(buff, sizeof(buff), "%s", opt);
+        codec_name = buff;
+        if(!(option = strchr(buff, ':'))){
+            report_config_error(config->filename, config->line_num,
+                                AV_LOG_ERROR, &config->errors,
+                                "Syntax error. Unmatched ':'\n");
+            return -1;
+
+        }
+        buff[option - buff] = '\0';
+        option++;
+        if ((ret = ffserver_set_codec(ctx, codec_name, config)) < 0)
+            return ret;
+        if (!ctx->codec || !ctx->priv_data)
+            return -1;
+    } else {
+        option = opt;
+    }
+
+    o = av_opt_find(ctx, option, NULL, type | AV_OPT_FLAG_ENCODING_PARAM,
+                    AV_OPT_SEARCH_CHILDREN);
+    if (!o &&
+        (!strcmp(option, "time_base")  || !strcmp(option, "pixel_format") ||
+         !strcmp(option, "video_size") || !strcmp(option, "codec_tag")))
+        o = av_opt_find(ctx, option, NULL, 0, 0);
+    if (!o) {
+        report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                            &config->errors, "Option not found: '%s'\n", opt);
+        if (!hinted && ctx->codec_id == AV_CODEC_ID_NONE) {
+            hinted = 1;
+            report_config_error(config->filename, config->line_num,
+                                AV_LOG_ERROR, NULL, "If '%s' is a codec private"
+                                "option, then prefix it with codec name, for "
+                                "example '%s:%s %s' or define codec earlier.\n",
+                                opt, avcodec_get_name(guessed_codec_id) ,opt,
+                                arg);
+        }
+    } else if ((ret = av_opt_set(ctx, option, arg, AV_OPT_SEARCH_CHILDREN)) < 0) {
+        report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                &config->errors, "Invalid value for option %s (%s): %s\n", opt,
+                arg, av_err2str(ret));
+    } else if ((e = av_dict_get(*dict, option, NULL, 0))) {
+        if ((o->type == AV_OPT_TYPE_FLAGS) && arg &&
+            (arg[0] == '+' || arg[0] == '-'))
+            return av_dict_set(dict, option, arg, AV_DICT_APPEND);
+        report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
+                            &config->errors, "Redeclaring value of option '%s'."
+                            "Previous value was: '%s'.\n", opt, e->value);
+    } else if (av_dict_set(dict, option, arg, 0) < 0) {
+        return AVERROR(ENOMEM);
+    }
+    return 0;
+}
+
+static int ffserver_save_avoption_int(const char *opt, int64_t arg,
+                                      int type, FFServerConfig *config)
+{
+    char buf[22];
+    snprintf(buf, sizeof(buf), "%"PRId64, arg);
+    return ffserver_save_avoption(opt, buf, type, config);
+}
+
+static int ffserver_parse_config_global(FFServerConfig *config, const char *cmd,
+                                        const char **p)
+{
+    int val;
+    char arg[1024];
+    if (!av_strcasecmp(cmd, "Port") || !av_strcasecmp(cmd, "HTTPPort")) {
+        if (!av_strcasecmp(cmd, "Port"))
+            WARNING("Port option is deprecated. Use HTTPPort instead.\n");
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
+                "Invalid port: %s\n", arg);
+        if (val < 1024)
+            WARNING("Trying to use IETF assigned system port: '%d'\n", val);
+        config->http_addr.sin_port = htons(val);
+    } else if (!av_strcasecmp(cmd, "HTTPBindAddress") ||
+               !av_strcasecmp(cmd, "BindAddress")) {
+        if (!av_strcasecmp(cmd, "BindAddress"))
+            WARNING("BindAddress option is deprecated. Use HTTPBindAddress "
+                    "instead.\n");
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (resolve_host(&config->http_addr.sin_addr, arg))
+            ERROR("Invalid host/IP address: '%s'\n", arg);
+    } else if (!av_strcasecmp(cmd, "NoDaemon")) {
+        WARNING("NoDaemon option has no effect. You should remove it.\n");
+    } else if (!av_strcasecmp(cmd, "RTSPPort")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
+                "Invalid port: %s\n", arg);
+        config->rtsp_addr.sin_port = htons(val);
+    } else if (!av_strcasecmp(cmd, "RTSPBindAddress")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (resolve_host(&config->rtsp_addr.sin_addr, arg))
+            ERROR("Invalid host/IP address: %s\n", arg);
+    } else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
+                "Invalid MaxHTTPConnections: %s\n", arg);
+        config->nb_max_http_connections = val;
+        if (config->nb_max_connections > config->nb_max_http_connections) {
+            ERROR("Inconsistent configuration: MaxClients(%d) > "
+                  "MaxHTTPConnections(%d)\n", config->nb_max_connections,
+                  config->nb_max_http_connections);
+        }
+    } else if (!av_strcasecmp(cmd, "MaxClients")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
+                "Invalid MaxClients: '%s'\n", arg);
+        config->nb_max_connections = val;
+        if (config->nb_max_connections > config->nb_max_http_connections) {
+            ERROR("Inconsistent configuration: MaxClients(%d) > "
+                  "MaxHTTPConnections(%d)\n", config->nb_max_connections,
+                  config->nb_max_http_connections);
+        }
+    } else if (!av_strcasecmp(cmd, "MaxBandwidth")) {
+        int64_t llval;
+        char *tailp;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        errno = 0;
+        llval = strtoll(arg, &tailp, 10);
+        if (llval < 10 || llval > 10000000 || tailp[0] || errno)
+            ERROR("Invalid MaxBandwidth: '%s'\n", arg);
+        else
+            config->max_bandwidth = llval;
+    } else if (!av_strcasecmp(cmd, "CustomLog")) {
+        if (!config->debug) {
+            ffserver_get_arg(config->logfilename, sizeof(config->logfilename),
+                             p);
+        }
+    } else if (!av_strcasecmp(cmd, "LoadModule")) {
+        ERROR("Loadable modules are no longer supported\n");
+    } else if (!av_strcasecmp(cmd, "NoDefaults")) {
+        config->use_defaults = 0;
+    } else if (!av_strcasecmp(cmd, "UseDefaults")) {
+        config->use_defaults = 1;
+    } else
+        ERROR("Incorrect keyword: '%s'\n", cmd);
+    return 0;
+}
+
+static int ffserver_parse_config_feed(FFServerConfig *config, const char *cmd,
+                                      const char **p, FFServerStream **pfeed)
+{
+    FFServerStream *feed;
+    char arg[1024];
+    av_assert0(pfeed);
+    feed = *pfeed;
+    if (!av_strcasecmp(cmd, "<Feed")) {
+        char *q;
+        FFServerStream *s;
+        feed = av_mallocz(sizeof(FFServerStream));
+        if (!feed)
+            return AVERROR(ENOMEM);
+        ffserver_get_arg(feed->filename, sizeof(feed->filename), p);
+        q = strrchr(feed->filename, '>');
+        if (*q)
+            *q = '\0';
+
+        for (s = config->first_feed; s; s = s->next) {
+            if (!strcmp(feed->filename, s->filename))
+                ERROR("Feed '%s' already registered\n", s->filename);
+        }
+
+        feed->fmt = av_guess_format("ffm", NULL, NULL);
+        /* default feed file */
+        snprintf(feed->feed_filename, sizeof(feed->feed_filename),
+                 "/tmp/%s.ffm", feed->filename);
+        feed->feed_max_size = 5 * 1024 * 1024;
+        feed->is_feed = 1;
+        feed->feed = feed; /* self feeding :-) */
+        *pfeed = feed;
+        return 0;
+    }
+    av_assert0(feed);
+    if (!av_strcasecmp(cmd, "Launch")) {
+        int i;
+
+        feed->child_argv = av_mallocz_array(MAX_CHILD_ARGS, sizeof(char *));
+        if (!feed->child_argv)
+            return AVERROR(ENOMEM);
+        for (i = 0; i < MAX_CHILD_ARGS - 2; i++) {
+            ffserver_get_arg(arg, sizeof(arg), p);
+            if (!arg[0])
+                break;
+
+            feed->child_argv[i] = av_strdup(arg);
+            if (!feed->child_argv[i])
+                return AVERROR(ENOMEM);
+        }
+
+        feed->child_argv[i] =
+            av_asprintf("http://%s:%d/%s",
+                        (config->http_addr.sin_addr.s_addr == INADDR_ANY) ?
+                        "127.0.0.1" : inet_ntoa(config->http_addr.sin_addr),
+                        ntohs(config->http_addr.sin_port), feed->filename);
+        if (!feed->child_argv[i])
+            return AVERROR(ENOMEM);
+    } else if (!av_strcasecmp(cmd, "ACL")) {
+        ffserver_parse_acl_row(NULL, feed, NULL, *p, config->filename,
+                config->line_num);
+    } else if (!av_strcasecmp(cmd, "File") ||
+               !av_strcasecmp(cmd, "ReadOnlyFile")) {
+        ffserver_get_arg(feed->feed_filename, sizeof(feed->feed_filename), p);
+        feed->readonly = !av_strcasecmp(cmd, "ReadOnlyFile");
+    } else if (!av_strcasecmp(cmd, "Truncate")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        /* assume Truncate is true in case no argument is specified */
+        if (!arg[0]) {
+            feed->truncate = 1;
+        } else {
+            WARNING("Truncate N syntax in configuration file is deprecated. "
+                    "Use Truncate alone with no arguments.\n");
+            feed->truncate = strtod(arg, NULL);
+        }
+    } else if (!av_strcasecmp(cmd, "FileMaxSize")) {
+        char *p1;
+        double fsize;
+
+        ffserver_get_arg(arg, sizeof(arg), p);
+        p1 = arg;
+        fsize = strtod(p1, &p1);
+        switch(av_toupper(*p1)) {
+        case 'K':
+            fsize *= 1024;
+            break;
+        case 'M':
+            fsize *= 1024 * 1024;
+            break;
+        case 'G':
+            fsize *= 1024 * 1024 * 1024;
+            break;
+        default:
+            ERROR("Invalid file size: '%s'\n", arg);
+            break;
+        }
+        feed->feed_max_size = (int64_t)fsize;
+        if (feed->feed_max_size < FFM_PACKET_SIZE*4) {
+            ERROR("Feed max file size is too small. Must be at least %d.\n",
+                  FFM_PACKET_SIZE*4);
+        }
+    } else if (!av_strcasecmp(cmd, "</Feed>")) {
+        *pfeed = NULL;
+    } else {
+        ERROR("Invalid entry '%s' inside <Feed></Feed>\n", cmd);
+    }
+    return 0;
+}
+
+static int ffserver_parse_config_stream(FFServerConfig *config, const char *cmd,
+                                        const char **p,
+                                        FFServerStream **pstream)
+{
+    char arg[1024], arg2[1024];
+    FFServerStream *stream;
+    int val;
+
+    av_assert0(pstream);
+    stream = *pstream;
+
+    if (!av_strcasecmp(cmd, "<Stream")) {
+        char *q;
+        FFServerStream *s;
+        stream = av_mallocz(sizeof(FFServerStream));
+        if (!stream)
+            return AVERROR(ENOMEM);
+        config->dummy_actx = avcodec_alloc_context3(NULL);
+        config->dummy_vctx = avcodec_alloc_context3(NULL);
+        if (!config->dummy_vctx || !config->dummy_actx) {
+            av_free(stream);
+            avcodec_free_context(&config->dummy_vctx);
+            avcodec_free_context(&config->dummy_actx);
+            return AVERROR(ENOMEM);
+        }
+        config->dummy_actx->codec_type = AVMEDIA_TYPE_AUDIO;
+        config->dummy_vctx->codec_type = AVMEDIA_TYPE_VIDEO;
+        ffserver_get_arg(stream->filename, sizeof(stream->filename), p);
+        q = strrchr(stream->filename, '>');
+        if (q)
+            *q = '\0';
+
+        for (s = config->first_stream; s; s = s->next) {
+            if (!strcmp(stream->filename, s->filename))
+                ERROR("Stream '%s' already registered\n", s->filename);
+        }
+
+        stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL);
+        if (stream->fmt) {
+            config->guessed_audio_codec_id = stream->fmt->audio_codec;
+            config->guessed_video_codec_id = stream->fmt->video_codec;
+        } else {
+            config->guessed_audio_codec_id = AV_CODEC_ID_NONE;
+            config->guessed_video_codec_id = AV_CODEC_ID_NONE;
+        }
+        config->stream_use_defaults = config->use_defaults;
+        *pstream = stream;
+        return 0;
+    }
+    av_assert0(stream);
+    if (!av_strcasecmp(cmd, "Feed")) {
+        FFServerStream *sfeed;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        sfeed = config->first_feed;
+        while (sfeed) {
+            if (!strcmp(sfeed->filename, arg))
+                break;
+            sfeed = sfeed->next_feed;
+        }
+        if (!sfeed)
+            ERROR("Feed with name '%s' for stream '%s' is not defined\n", arg,
+                    stream->filename);
+        else
+            stream->feed = sfeed;
+    } else if (!av_strcasecmp(cmd, "Format")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (!strcmp(arg, "status")) {
+            stream->stream_type = STREAM_TYPE_STATUS;
+            stream->fmt = NULL;
+        } else {
+            stream->stream_type = STREAM_TYPE_LIVE;
+            /* JPEG cannot be used here, so use single frame MJPEG */
+            if (!strcmp(arg, "jpeg")) {
+                strcpy(arg, "singlejpeg");
+                stream->single_frame=1;
+            }
+            stream->fmt = ffserver_guess_format(arg, NULL, NULL);
+            if (!stream->fmt)
+                ERROR("Unknown Format: '%s'\n", arg);
+        }
+        if (stream->fmt) {
+            config->guessed_audio_codec_id = stream->fmt->audio_codec;
+            config->guessed_video_codec_id = stream->fmt->video_codec;
+        }
+    } else if (!av_strcasecmp(cmd, "InputFormat")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        stream->ifmt = av_find_input_format(arg);
+        if (!stream->ifmt)
+            ERROR("Unknown input format: '%s'\n", arg);
+    } else if (!av_strcasecmp(cmd, "FaviconURL")) {
+        if (stream->stream_type == STREAM_TYPE_STATUS)
+            ffserver_get_arg(stream->feed_filename,
+                    sizeof(stream->feed_filename), p);
+        else
+            ERROR("FaviconURL only permitted for status streams\n");
+    } else if (!av_strcasecmp(cmd, "Author")    ||
+               !av_strcasecmp(cmd, "Comment")   ||
+               !av_strcasecmp(cmd, "Copyright") ||
+               !av_strcasecmp(cmd, "Title")) {
+        char key[32];
+        int i;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        for (i = 0; i < strlen(cmd); i++)
+            key[i] = av_tolower(cmd[i]);
+        key[i] = 0;
+        WARNING("Deprecated '%s' option in configuration file. Use "
+                "'Metadata %s VALUE' instead.\n", cmd, key);
+        if (av_dict_set(&stream->metadata, key, arg, 0) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "Metadata")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_get_arg(arg2, sizeof(arg2), p);
+        if (av_dict_set(&stream->metadata, arg, arg2, 0) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "Preroll")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        stream->prebuffer = atof(arg) * 1000;
+    } else if (!av_strcasecmp(cmd, "StartSendOnKey")) {
+        stream->send_on_key = 1;
+    } else if (!av_strcasecmp(cmd, "AudioCodec")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_codec(config->dummy_actx, arg, config);
+    } else if (!av_strcasecmp(cmd, "VideoCodec")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_codec(config->dummy_vctx, arg, config);
+    } else if (!av_strcasecmp(cmd, "MaxTime")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        stream->max_time = atof(arg) * 1000;
+    } else if (!av_strcasecmp(cmd, "AudioBitRate")) {
+        float f;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_float_param(&f, arg, 1000, -FLT_MAX, FLT_MAX, config,
+                "Invalid %s: '%s'\n", cmd, arg);
+        if (ffserver_save_avoption_int("b", (int64_t)lrintf(f),
+                                       AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "AudioChannels")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("ac", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "AudioSampleRate")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("ar", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoBitRateRange")) {
+        int minrate, maxrate;
+        char *dash;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        dash = strchr(arg, '-');
+        if (dash) {
+            *dash = '\0';
+            dash++;
+            if (ffserver_set_int_param(&minrate, arg,  1000, 0, INT_MAX, config, "Invalid %s: '%s'", cmd, arg) >= 0 &&
+                ffserver_set_int_param(&maxrate, dash, 1000, 0, INT_MAX, config, "Invalid %s: '%s'", cmd, arg) >= 0) {
+                if (ffserver_save_avoption_int("minrate", minrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||
+                    ffserver_save_avoption_int("maxrate", maxrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+                goto nomem;
+            }
+        } else
+            ERROR("Incorrect format for VideoBitRateRange. It should be "
+                  "<min>-<max>: '%s'.\n", arg);
+    } else if (!av_strcasecmp(cmd, "Debug")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("debug", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||
+            ffserver_save_avoption("debug", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "Strict")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("strict", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||
+            ffserver_save_avoption("strict", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoBufferSize")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 8*1024, 0, INT_MAX, config,
+                "Invalid %s: '%s'", cmd, arg);
+        if (ffserver_save_avoption_int("bufsize", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,
+                               "Invalid %s: '%s'", cmd, arg);
+        if (ffserver_save_avoption_int("bt", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoBitRate")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,
+                               "Invalid %s: '%s'", cmd, arg);
+        if (ffserver_save_avoption_int("b", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+           goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoSize")) {
+        int ret, w, h;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ret = av_parse_video_size(&w, &h, arg);
+        if (ret < 0)
+            ERROR("Invalid video size '%s'\n", arg);
+        else {
+            if (w % 2 || h % 2)
+                WARNING("Image size is not a multiple of 2\n");
+            if (ffserver_save_avoption("video_size", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+                goto nomem;
+        }
+    } else if (!av_strcasecmp(cmd, "VideoFrameRate")) {
+        ffserver_get_arg(&arg[2], sizeof(arg) - 2, p);
+        arg[0] = '1'; arg[1] = '/';
+        if (ffserver_save_avoption("time_base", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "PixelFormat")) {
+        enum AVPixelFormat pix_fmt;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        pix_fmt = av_get_pix_fmt(arg);
+        if (pix_fmt == AV_PIX_FMT_NONE)
+            ERROR("Unknown pixel format: '%s'\n", arg);
+        else if (ffserver_save_avoption("pixel_format", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoGopSize")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("g", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoIntraOnly")) {
+        if (ffserver_save_avoption("g", "1", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {
+        if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {
+        if (ffserver_save_avoption("mbd", "+bits",  AV_OPT_FLAG_VIDEO_PARAM, config) < 0 || //FIXME remove
+            ffserver_save_avoption("flags", "+mv4", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||
+               !av_strcasecmp(cmd, "AVOptionAudio")) {
+        int ret;
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_get_arg(arg2, sizeof(arg2), p);
+        if (!av_strcasecmp(cmd, "AVOptionVideo"))
+            ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM,
+                                         config);
+        else
+            ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM,
+                                         config);
+        if (ret < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||
+               !av_strcasecmp(cmd, "AVPresetAudio")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (!av_strcasecmp(cmd, "AVPresetVideo"))
+            ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);
+        else
+            ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);
+    } else if (!av_strcasecmp(cmd, "VideoTag")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (strlen(arg) == 4 &&
+            ffserver_save_avoption_int("codec_tag",
+                                       MKTAG(arg[0], arg[1], arg[2], arg[3]),
+                                       AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "BitExact")) {
+        config->bitexact = 1;
+        if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "DctFastint")) {
+        if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "IdctSimple")) {
+        if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "Qscale")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,
+                               "Invalid Qscale: '%s'\n", arg);
+        if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||
+            ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,
+                                       AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoQDiff")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoQMax")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "VideoQMin")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "LumiMask")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "DarkMask")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
+            goto nomem;
+    } else if (!av_strcasecmp(cmd, "NoVideo")) {
+        config->no_video = 1;
+    } else if (!av_strcasecmp(cmd, "NoAudio")) {
+        config->no_audio = 1;
+    } else if (!av_strcasecmp(cmd, "ACL")) {
+        ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,
+                config->line_num);
+    } else if (!av_strcasecmp(cmd, "DynamicACL")) {
+        ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);
+    } else if (!av_strcasecmp(cmd, "RTSPOption")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        av_freep(&stream->rtsp_option);
+        stream->rtsp_option = av_strdup(arg);
+    } else if (!av_strcasecmp(cmd, "MulticastAddress")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        if (resolve_host(&stream->multicast_ip, arg))
+            ERROR("Invalid host/IP address: '%s'\n", arg);
+        stream->is_multicast = 1;
+        stream->loop = 1; /* default is looping */
+    } else if (!av_strcasecmp(cmd, "MulticastPort")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
+                "Invalid MulticastPort: '%s'\n", arg);
+        stream->multicast_port = val;
+    } else if (!av_strcasecmp(cmd, "MulticastTTL")) {
+        ffserver_get_arg(arg, sizeof(arg), p);
+        ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,
+                "Invalid MulticastTTL: '%s'\n", arg);
+        stream->multicast_ttl = val;
+    } else if (!av_strcasecmp(cmd, "NoLoop")) {
+        stream->loop = 0;
+    } else if (!av_strcasecmp(cmd, "</Stream>")) {
+        config->stream_use_defaults &= 1;
+        if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {
+            if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)
+                config->dummy_actx->codec_id = config->guessed_audio_codec_id;
+            if (!config->no_audio &&
+                config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {
+                AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));
+                add_codec(stream, audio_enc, config);
+            }
+            if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)
+                config->dummy_vctx->codec_id = config->guessed_video_codec_id;
+            if (!config->no_video &&
+                config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {
+                AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));
+                add_codec(stream, video_enc, config);
+            }
+        }
+        av_dict_free(&config->video_opts);
+        av_dict_free(&config->audio_opts);
+        avcodec_free_context(&config->dummy_vctx);
+        avcodec_free_context(&config->dummy_actx);
+        config->no_video = 0;
+        config->no_audio = 0;
+        *pstream = NULL;
+    } else if (!av_strcasecmp(cmd, "File") ||
+               !av_strcasecmp(cmd, "ReadOnlyFile")) {
+        ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),
+                p);
+    } else if (!av_strcasecmp(cmd, "UseDefaults")) {
+        if (config->stream_use_defaults > 1)
+            WARNING("Multiple UseDefaults/NoDefaults entries.\n");
+        config->stream_use_defaults = 3;
+    } else if (!av_strcasecmp(cmd, "NoDefaults")) {
+        if (config->stream_use_defaults > 1)
+            WARNING("Multiple UseDefaults/NoDefaults entries.\n");
+        config->stream_use_defaults = 2;
+    } else {
+        ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);
+    }
+    return 0;
+  nomem:
+    av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");
+    av_dict_free(&config->video_opts);
+    av_dict_free(&config->audio_opts);
+    avcodec_free_context(&config->dummy_vctx);
+    avcodec_free_context(&config->dummy_actx);
+    return AVERROR(ENOMEM);
+}
+
+static int ffserver_parse_config_redirect(FFServerConfig *config,
+                                          const char *cmd, const char **p,
+                                          FFServerStream **predirect)
+{
+    FFServerStream *redirect;
+    av_assert0(predirect);
+    redirect = *predirect;
+
+    if (!av_strcasecmp(cmd, "<Redirect")) {
+        char *q;
+        redirect = av_mallocz(sizeof(FFServerStream));
+        if (!redirect)
+            return AVERROR(ENOMEM);
+
+        ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);
+        q = strrchr(redirect->filename, '>');
+        if (*q)
+            *q = '\0';
+        redirect->stream_type = STREAM_TYPE_REDIRECT;
+        *predirect = redirect;
+        return 0;
+    }
+    av_assert0(redirect);
+    if (!av_strcasecmp(cmd, "URL")) {
+        ffserver_get_arg(redirect->feed_filename,
+                sizeof(redirect->feed_filename), p);
+    } else if (!av_strcasecmp(cmd, "</Redirect>")) {
+        if (!redirect->feed_filename[0])
+            ERROR("No URL found for <Redirect>\n");
+        *predirect = NULL;
+    } else {
+        ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);
+    }
+    return 0;
+}
+
+int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)
+{
+    FILE *f;
+    char line[1024];
+    char cmd[64];
+    const char *p;
+    FFServerStream **last_stream, *stream = NULL, *redirect = NULL;
+    FFServerStream **last_feed, *feed = NULL;
+    int ret = 0;
+
+    av_assert0(config);
+
+    f = fopen(filename, "r");
+    if (!f) {
+        ret = AVERROR(errno);
+        av_log(NULL, AV_LOG_ERROR,
+                "Could not open the configuration file '%s'\n", filename);
+        return ret;
+    }
+
+    config->first_stream = NULL;
+    config->first_feed = NULL;
+    config->errors = config->warnings = 0;
+
+    last_stream = &config->first_stream;
+    last_feed = &config->first_feed;
+
+    config->line_num = 0;
+    while (fgets(line, sizeof(line), f) != NULL) {
+        config->line_num++;
+        p = line;
+        while (av_isspace(*p))
+            p++;
+        if (*p == '\0' || *p == '#')
+            continue;
+
+        ffserver_get_arg(cmd, sizeof(cmd), &p);
+
+        if (feed || !av_strcasecmp(cmd, "<Feed")) {
+            int opening = !av_strcasecmp(cmd, "<Feed");
+            if (opening && (stream || feed || redirect)) {
+                ERROR("Already in a tag\n");
+            } else {
+                ret = ffserver_parse_config_feed(config, cmd, &p, &feed);
+                if (ret < 0)
+                    break;
+                if (opening) {
+                    /* add in stream & feed list */
+                    *last_stream = feed;
+                    *last_feed = feed;
+                    last_stream = &feed->next;
+                    last_feed = &feed->next_feed;
+                }
+            }
+        } else if (stream || !av_strcasecmp(cmd, "<Stream")) {
+            int opening = !av_strcasecmp(cmd, "<Stream");
+            if (opening && (stream || feed || redirect)) {
+                ERROR("Already in a tag\n");
+            } else {
+                ret = ffserver_parse_config_stream(config, cmd, &p, &stream);
+                if (ret < 0)
+                    break;
+                if (opening) {
+                    /* add in stream list */
+                    *last_stream = stream;
+                    last_stream = &stream->next;
+                }
+            }
+        } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {
+            int opening = !av_strcasecmp(cmd, "<Redirect");
+            if (opening && (stream || feed || redirect))
+                ERROR("Already in a tag\n");
+            else {
+                ret = ffserver_parse_config_redirect(config, cmd, &p,
+                                                     &redirect);
+                if (ret < 0)
+                    break;
+                if (opening) {
+                    /* add in stream list */
+                    *last_stream = redirect;
+                    last_stream = &redirect->next;
+                }
+            }
+        } else {
+            ffserver_parse_config_global(config, cmd, &p);
+        }
+    }
+    if (stream || feed || redirect)
+        ERROR("Missing closing </%s> tag\n",
+              stream ? "Stream" : (feed ? "Feed" : "Redirect"));
+
+    fclose(f);
+    if (ret < 0)
+        return ret;
+    if (config->errors)
+        return AVERROR(EINVAL);
+    else
+        return 0;
+}
+
+#undef ERROR
+#undef WARNING
+
+void ffserver_free_child_args(void *argsp)
+{
+    int i;
+    char **args;
+    if (!argsp)
+        return;
+    args = *(char ***)argsp;
+    if (!args)
+        return;
+    for (i = 0; i < MAX_CHILD_ARGS; i++)
+        av_free(args[i]);
+    av_freep(argsp);
+}
diff --git a/fftools/ffserver_config.h b/fftools/ffserver_config.h
new file mode 100644
index 0000000000..089b8484da
--- /dev/null
+++ b/fftools/ffserver_config.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFTOOLS_FFSERVER_CONFIG_H
+#define FFTOOLS_FFSERVER_CONFIG_H
+
+#define FFM_PACKET_SIZE 4096
+
+#include "libavutil/dict.h"
+#include "libavformat/avformat.h"
+#include "libavformat/network.h"
+
+#define FFSERVER_MAX_STREAMS 20
+
+/* each generated stream is described here */
+enum FFServerStreamType {
+    STREAM_TYPE_LIVE,
+    STREAM_TYPE_STATUS,
+    STREAM_TYPE_REDIRECT,
+};
+
+enum FFServerIPAddressAction {
+    IP_ALLOW = 1,
+    IP_DENY,
+};
+
+typedef struct FFServerIPAddressACL {
+    struct FFServerIPAddressACL *next;
+    enum FFServerIPAddressAction action;
+    /* These are in host order */
+    struct in_addr first;
+    struct in_addr last;
+} FFServerIPAddressACL;
+
+/**
+ * This holds the stream parameters for an AVStream, it cannot be a AVStream
+ * because AVStreams cannot be instanciated without a AVFormatContext, especially
+ * not outside libavformat.
+ *
+ * The fields of this struct have the same semantics as the fields of an AVStream.
+ */
+typedef struct LayeredAVStream {
+    int index;
+    int id;
+    AVCodecParameters *codecpar;
+    AVCodecContext *codec;
+    AVRational time_base;
+    int pts_wrap_bits;
+    AVRational sample_aspect_ratio;
+    char *recommended_encoder_configuration;
+} LayeredAVStream;
+
+/* description of each stream of the ffserver.conf file */
+typedef struct FFServerStream {
+    enum FFServerStreamType stream_type;
+    char filename[1024];          /* stream filename */
+    struct FFServerStream *feed;  /* feed we are using (can be null if coming from file) */
+    AVDictionary *in_opts;        /* input parameters */
+    AVDictionary *metadata;       /* metadata to set on the stream */
+    AVInputFormat *ifmt;          /* if non NULL, force input format */
+    AVOutputFormat *fmt;
+    FFServerIPAddressACL *acl;
+    char dynamic_acl[1024];
+    int nb_streams;
+    int prebuffer;                /* Number of milliseconds early to start */
+    int64_t max_time;             /* Number of milliseconds to run */
+    int send_on_key;
+    LayeredAVStream *streams[FFSERVER_MAX_STREAMS];
+    int feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */
+    char feed_filename[1024];     /* file name of the feed storage, or
+                                     input file name for a stream */
+    pid_t pid;                    /* Of ffmpeg process */
+    time_t pid_start;             /* Of ffmpeg process */
+    char **child_argv;
+    struct FFServerStream *next;
+    unsigned bandwidth;           /* bandwidth, in kbits/s */
+    /* RTSP options */
+    char *rtsp_option;
+    /* multicast specific */
+    int is_multicast;
+    struct in_addr multicast_ip;
+    int multicast_port;           /* first port used for multicast */
+    int multicast_ttl;
+    int loop;                     /* if true, send the stream in loops (only meaningful if file) */
+    char single_frame;            /* only single frame */
+
+    /* feed specific */
+    int feed_opened;              /* true if someone is writing to the feed */
+    int is_feed;                  /* true if it is a feed */
+    int readonly;                 /* True if writing is prohibited to the file */
+    int truncate;                 /* True if feeder connection truncate the feed file */
+    int conns_served;
+    int64_t bytes_served;
+    int64_t feed_max_size;        /* maximum storage size, zero means unlimited */
+    int64_t feed_write_index;     /* current write position in feed (it wraps around) */
+    int64_t feed_size;            /* current size of feed */
+    struct FFServerStream *next_feed;
+} FFServerStream;
+
+typedef struct FFServerConfig {
+    char *filename;
+    FFServerStream *first_feed;   /* contains only feeds */
+    FFServerStream *first_stream; /* contains all streams, including feeds */
+    unsigned int nb_max_http_connections;
+    unsigned int nb_max_connections;
+    uint64_t max_bandwidth;
+    int debug;
+    int bitexact;
+    char logfilename[1024];
+    struct sockaddr_in http_addr;
+    struct sockaddr_in rtsp_addr;
+    int errors;
+    int warnings;
+    int use_defaults;
+    // Following variables MUST NOT be used outside configuration parsing code.
+    enum AVCodecID guessed_audio_codec_id;
+    enum AVCodecID guessed_video_codec_id;
+    AVDictionary *video_opts;     /* AVOptions for video encoder */
+    AVDictionary *audio_opts;     /* AVOptions for audio encoder */
+    AVCodecContext *dummy_actx;   /* Used internally to test audio AVOptions. */
+    AVCodecContext *dummy_vctx;   /* Used internally to test video AVOptions. */
+    int no_audio;
+    int no_video;
+    int line_num;
+    int stream_use_defaults;
+} FFServerConfig;
+
+void ffserver_get_arg(char *buf, int buf_size, const char **pp);
+
+void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,
+                            FFServerIPAddressACL *ext_acl,
+                            const char *p, const char *filename, int line_num);
+
+int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config);
+
+void ffserver_free_child_args(void *argsp);
+
+#endif /* FFTOOLS_FFSERVER_CONFIG_H */