Merge remote-tracking branch 'qatar/master'

* qatar/master: (22 commits)
  g722dec: check output buffer size before decoding
  g722dec: cosmetics: reindent/linewrap
  g722dec: remove the use of lowres for half-rate decoding.
  tta: check for extradata allocation failure in tta demuxer
  tta: check for allocation failure of decode_buffer
  tta: use correct frame_length calculation.
  tta: add support for decoding 24-bit sample format
  cosmetics: indentation
  tta: remove pointless braces
  tta: check output buffer size after adjusting frame length for last frame
  tta: fix reading of format in TTA header.
  tta: remove useless commented-out lines
  tta: check remaining bitstream size while reading unary value
  lavf: deprecate AVStream.stream_copy
  avconc: split choose_codec() to choose_decoder/choose_encoder.
  lavf: simplify by using FFMAX/FFMIN.
  mpegenc: add preload private option.
  cosmetics: simplify latm_decode_init
  latm: avoid unnecessary reinit of the aac decoder
  aacdec: initialize sbr context only in new channel elements
  ...

Conflicts:
	avconv.c
	libavcodec/resample.c
	libavcodec/tta.c
	libavformat/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

11 files changed, 301 insertions, 288 deletions

diff --git a/avconv.c b/avconv.c
index e8fd7eae65..1409131971 100644
--- a/avconv.c
+++ b/avconv.c
@@ -243,6 +243,7 @@ typedef struct OutputStream {
    int64_t sws_flags;
    AVDictionary *opts;
    int is_past_recording_time;
+   int stream_copy;
 } OutputStream;
 
 #if HAVE_TERMIOS_H
@@ -396,7 +397,6 @@ static void reset_options(OptionsContext *o)
 
     memset(o, 0, sizeof(*o));
 
-    o->mux_preload    = 0.5;
     o->mux_max_delay  = 0.7;
     o->recording_time = INT64_MAX;
     o->limit_filesize = UINT64_MAX;
@@ -1407,7 +1407,7 @@ static void print_report(OutputFile *output_files,
         float q = -1;
         ost = &ost_table[i];
         enc = ost->st->codec;
-        if (!ost->st->stream_copy && enc->coded_frame)
+        if (!ost->stream_copy && enc->coded_frame)
             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
@@ -2054,7 +2054,7 @@ static int transcode_init(OutputFile *output_files,
         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
         codec->chroma_sample_location = icodec->chroma_sample_location;
 
-        if (ost->st->stream_copy) {
+        if (ost->stream_copy) {
             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
 
             if (extra_size > INT_MAX) {
@@ -2150,9 +2150,8 @@ static int transcode_init(OutputFile *output_files,
                     return AVERROR(ENOMEM);
                 }
                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
-                if (!codec->sample_rate) {
+                if (!codec->sample_rate)
                     codec->sample_rate = icodec->sample_rate;
-                }
                 choose_sample_rate(ost->st, ost->enc);
                 codec->time_base = (AVRational){1, codec->sample_rate};
                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
@@ -2360,7 +2359,7 @@ static int transcode_init(OutputFile *output_files,
             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
                    ost->sync_ist->file_index,
                    ost->sync_ist->st->index);
-        if (ost->st->stream_copy)
+        if (ost->stream_copy)
             av_log(NULL, AV_LOG_INFO, " (copy)");
         else
             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
@@ -2643,7 +2642,7 @@ static int transcode(OutputFile *output_files,
         for (i = 0; i < nb_output_streams; i++) {
             ost = &output_streams[i];
             if (ost) {
-                if (ost->st->stream_copy)
+                if (ost->stream_copy)
                     av_freep(&ost->st->codec->extradata);
                 if (ost->logfile) {
                     fclose(ost->logfile);
@@ -2842,13 +2841,11 @@ static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
     return 0;
 }
 
-static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
+static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
 {
     const char *codec_string = encoder ? "encoder" : "decoder";
     AVCodec *codec;
 
-    if(!name)
-        return CODEC_ID_NONE;
     codec = encoder ?
         avcodec_find_encoder_by_name(name) :
         avcodec_find_decoder_by_name(name);
@@ -2860,29 +2857,20 @@ static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, i
         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
         exit_program(1);
     }
-    return codec->id;
+    return codec;
 }
 
-static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
+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) {
-        if (s->oformat) {
-            st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
-            return avcodec_find_encoder(st->codec->codec_id);
-        }
-    } else if (!strcmp(codec_name, "copy"))
-        st->stream_copy = 1;
-    else {
-        st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
-        return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
-                            avcodec_find_decoder_by_name(codec_name);
-    }
-
-    return NULL;
+    if (codec_name) {
+        AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
+        st->codec->codec_id = codec->id;
+        return codec;
+    } else
+        return avcodec_find_decoder(st->codec->codec_id);
 }
 
 /**
@@ -2909,9 +2897,7 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
         ist->ts_scale = scale;
 
-        ist->dec = choose_codec(o, ic, st, dec->codec_type);
-        if (!ist->dec)
-            ist->dec = avcodec_find_decoder(dec->codec_id);
+        ist->dec = choose_decoder(o, ic, st);
 
         switch (dec->codec_type) {
         case AVMEDIA_TYPE_AUDIO:
@@ -3016,7 +3002,7 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
 
     /* apply forced codec ids */
     for (i = 0; i < ic->nb_streams; i++)
-        choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
+        choose_decoder(o, ic, ic->streams[i]);
 
     /* Set AVCodecContext options for avformat_find_stream_info */
     opts = setup_find_stream_info_opts(ic, codec_opts);
@@ -3134,6 +3120,23 @@ static int get_preset_file_2(const char *preset_name, const char *codec_name, AV
     return ret;
 }
 
+static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
+{
+    char *codec_name = NULL;
+
+    MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
+    if (!codec_name) {
+        ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
+                                                  NULL, ost->st->codec->codec_type);
+        ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
+    } else if (!strcmp(codec_name, "copy"))
+        ost->stream_copy = 1;
+    else {
+        ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
+        ost->st->codec->codec_id = ost->enc->id;
+    }
+}
+
 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
 {
     OutputStream *ost;
@@ -3161,7 +3164,7 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
     ost->index = idx;
     ost->st    = st;
     st->codec->codec_type = type;
-    ost->enc = choose_codec(o, oc, st, type);
+    choose_encoder(o, oc, ost);
     if (ost->enc) {
         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
     }
@@ -3262,7 +3265,7 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
     st  = ost->st;
     video_enc = st->codec;
 
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         const char *p = NULL;
         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
@@ -3379,7 +3382,7 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
     audio_enc = st->codec;
     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
 
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         char *sample_fmt = NULL;
 
         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
@@ -3399,12 +3402,10 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
 
 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
 {
-    AVStream *st;
     OutputStream *ost;
 
     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
-    st  = ost->st;
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
         exit_program(1);
     }
@@ -3415,7 +3416,7 @@ static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
 {
     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
-    ost->st->stream_copy = 1;
+    ost->stream_copy = 1;
     return ost;
 }
 
@@ -3520,9 +3521,9 @@ static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const ch
         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
         avcodec_copy_context(st->codec, ic->streams[i]->codec);
 
-        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
+        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
             choose_sample_fmt(st, codec);
-        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
+        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
             choose_pixel_fmt(st, codec);
     }
 
@@ -3678,7 +3679,11 @@ static void opt_output_file(void *optctx, const char *filename)
         }
     }
 
-    oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
+    if (o->mux_preload) {
+        uint8_t buf[64];
+        snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
+        av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
+    }
     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
 
     /* copy chapters */
diff --git a/ffmpeg.c b/ffmpeg.c
index df5b2fa114..1a3cc3c79b 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -251,6 +251,7 @@ typedef struct OutputStream {
    int64_t sws_flags;
    AVDictionary *opts;
    int is_past_recording_time;
+   int stream_copy;
 } OutputStream;
 
 
@@ -410,7 +411,6 @@ static void reset_options(OptionsContext *o, int is_input)
 
     if(is_input) o->recording_time = bak.recording_time;
     else         o->recording_time = INT64_MAX;
-    o->mux_preload    = 0.5;
     o->mux_max_delay  = 0.7;
     o->limit_filesize = UINT64_MAX;
     o->chapters_input_file = INT_MAX;
@@ -1414,7 +1414,7 @@ static void print_report(OutputFile *output_files,
         float q = -1;
         ost = &ost_table[i];
         enc = ost->st->codec;
-        if (!ost->st->stream_copy && enc->coded_frame)
+        if (!ost->stream_copy && enc->coded_frame)
             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
@@ -2066,7 +2066,7 @@ static int transcode_init(OutputFile *output_files, int nb_output_files,
         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
         codec->chroma_sample_location = icodec->chroma_sample_location;
 
-        if (ost->st->stream_copy) {
+        if (ost->stream_copy) {
             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
 
             if (extra_size > INT_MAX) {
@@ -2161,9 +2161,8 @@ static int transcode_init(OutputFile *output_files, int nb_output_files,
                 if (!ost->fifo) {
                     return AVERROR(ENOMEM);
                 }
-                if (!codec->sample_rate) {
+                if (!codec->sample_rate)
                     codec->sample_rate = icodec->sample_rate;
-                }
                 choose_sample_rate(ost->st, ost->enc);
                 codec->time_base = (AVRational){1, codec->sample_rate};
                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
@@ -2377,7 +2376,7 @@ static int transcode_init(OutputFile *output_files, int nb_output_files,
             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
                    ost->sync_ist->file_index,
                    ost->sync_ist->st->index);
-        if (ost->st->stream_copy)
+        if (ost->stream_copy)
             av_log(NULL, AV_LOG_INFO, " (copy)");
         else
             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
@@ -2701,7 +2700,7 @@ static int transcode(OutputFile *output_files, int nb_output_files,
         for (i = 0; i < nb_output_streams; i++) {
             ost = &output_streams[i];
             if (ost) {
-                if (ost->st->stream_copy)
+                if (ost->stream_copy)
                     av_freep(&ost->st->codec->extradata);
                 if (ost->logfile) {
                     fclose(ost->logfile);
@@ -2944,13 +2943,11 @@ static int opt_recording_timestamp(OptionsContext *o, const char *opt, const cha
     return 0;
 }
 
-static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
+static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
 {
     const char *codec_string = encoder ? "encoder" : "decoder";
     AVCodec *codec;
 
-    if(!name)
-        return CODEC_ID_NONE;
     codec = encoder ?
         avcodec_find_encoder_by_name(name) :
         avcodec_find_decoder_by_name(name);
@@ -2962,29 +2959,20 @@ static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, i
         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
         exit_program(1);
     }
-    return codec->id;
+    return codec;
 }
 
-static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
+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) {
-        if (s->oformat) {
-            st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
-            return avcodec_find_encoder(st->codec->codec_id);
-        }
-    } else if (!strcmp(codec_name, "copy"))
-        st->stream_copy = 1;
-    else {
-        st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
-        return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
-                            avcodec_find_decoder_by_name(codec_name);
-    }
-
-    return NULL;
+    if (codec_name) {
+        AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
+        st->codec->codec_id = codec->id;
+        return codec;
+    } else
+        return avcodec_find_decoder(st->codec->codec_id);
 }
 
 /**
@@ -3020,9 +3008,7 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
             st->codec->codec_tag = tag;
         }
 
-        ist->dec = choose_codec(o, ic, st, dec->codec_type);
-        if (!ist->dec)
-            ist->dec = avcodec_find_decoder(dec->codec_id);
+        ist->dec = choose_decoder(o, ic, st);
 
         switch (dec->codec_type) {
         case AVMEDIA_TYPE_AUDIO:
@@ -3115,12 +3101,12 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
     if (o->nb_frame_pix_fmts)
         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
 
-    ic->video_codec_id   =
-        find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0);
-    ic->audio_codec_id   =
-        find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0);
-    ic->subtitle_codec_id=
-        find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
+    ic->video_codec_id   = video_codec_name ?
+        find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
+    ic->audio_codec_id   = audio_codec_name ?
+        find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
+    ic->subtitle_codec_id= subtitle_codec_name ?
+        find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
     ic->flags |= AVFMT_FLAG_NONBLOCK;
 
     if (loop_input) {
@@ -3138,7 +3124,7 @@ static int opt_input_file(OptionsContext *o, const char *opt, const char *filena
 
     /* apply forced codec ids */
     for (i = 0; i < ic->nb_streams; i++)
-        choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
+        choose_decoder(o, ic, ic->streams[i]);
 
     /* Set AVCodecContext options for avformat_find_stream_info */
     opts = setup_find_stream_info_opts(ic, codec_opts);
@@ -3253,6 +3239,23 @@ static int get_preset_file_2(const char *preset_name, const char *codec_name, AV
     return ret;
 }
 
+static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
+{
+    char *codec_name = NULL;
+
+    MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
+    if (!codec_name) {
+        ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
+                                                  NULL, ost->st->codec->codec_type);
+        ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
+    } else if (!strcmp(codec_name, "copy"))
+        ost->stream_copy = 1;
+    else {
+        ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
+        ost->st->codec->codec_id = ost->enc->id;
+    }
+}
+
 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
 {
     OutputStream *ost;
@@ -3280,7 +3283,7 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
     ost->index = idx;
     ost->st    = st;
     st->codec->codec_type = type;
-    ost->enc = choose_codec(o, oc, st, type);
+    choose_encoder(o, oc, ost);
     if (ost->enc) {
         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
     }
@@ -3381,7 +3384,7 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
     st  = ost->st;
     video_enc = st->codec;
 
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         const char *p = NULL;
         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
@@ -3502,7 +3505,7 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
     audio_enc = st->codec;
     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
 
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         char *sample_fmt = NULL;
 
         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
@@ -3525,12 +3528,10 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
 
 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
 {
-    AVStream *st;
     OutputStream *ost;
 
     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
-    st  = ost->st;
-    if (!st->stream_copy) {
+    if (!ost->stream_copy) {
         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
         exit_program(1);
     }
@@ -3541,7 +3542,7 @@ static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
 {
     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
-    ost->st->stream_copy = 1;
+    ost->stream_copy = 1;
     return ost;
 }
 
@@ -3646,9 +3647,9 @@ static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const ch
         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
         avcodec_copy_context(st->codec, ic->streams[i]->codec);
 
-        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
+        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
             choose_sample_fmt(st, codec);
-        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
+        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
             choose_pixel_fmt(st, codec);
     }
 
@@ -3812,7 +3813,11 @@ static void opt_output_file(void *optctx, const char *filename)
         }
     }
 
-    oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
+    if (o->mux_preload) {
+        uint8_t buf[64];
+        snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
+        av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
+    }
     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
 
     if (loop_output >= 0) {
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 97d187c2a2..7c8d74e857 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -184,9 +184,11 @@ static av_cold int che_configure(AACContext *ac,
                                  int type, int id, int *channels)
 {
     if (che_pos[type][id]) {
-        if (!ac->che[type][id] && !(ac->che[type][id] = av_mallocz(sizeof(ChannelElement))))
-            return AVERROR(ENOMEM);
-        ff_aac_sbr_ctx_init(ac, &ac->che[type][id]->sbr);
+        if (!ac->che[type][id]) {
+            if (!(ac->che[type][id] = av_mallocz(sizeof(ChannelElement))))
+                return AVERROR(ENOMEM);
+            ff_aac_sbr_ctx_init(ac, &ac->che[type][id]->sbr);
+        }
         if (type != TYPE_CCE) {
             ac->output_data[(*channels)++] = ac->che[type][id]->ch[0].ret;
             if (type == TYPE_CPE ||
@@ -2521,8 +2523,9 @@ static int latm_decode_frame(AVCodecContext *avctx, void *out, int *out_size,
             *out_size = 0;
             return avpkt->size;
         } else {
-            aac_decode_close(avctx);
-            if ((err = aac_decode_init(avctx)) < 0)
+            if ((err = decode_audio_specific_config(
+                    &latmctx->aac_ctx, avctx, &latmctx->aac_ctx.m4ac,
+                    avctx->extradata, avctx->extradata_size, 8*avctx->extradata_size)) < 0)
                 return err;
             latmctx->initialized = 1;
         }
@@ -2544,15 +2547,10 @@ static int latm_decode_frame(AVCodecContext *avctx, void *out, int *out_size,
 av_cold static int latm_decode_init(AVCodecContext *avctx)
 {
     struct LATMContext *latmctx = avctx->priv_data;
-    int ret;
-
-    ret = aac_decode_init(avctx);
+    int ret = aac_decode_init(avctx);
 
-    if (avctx->extradata_size > 0) {
+    if (avctx->extradata_size > 0)
         latmctx->initialized = !ret;
-    } else {
-        latmctx->initialized = 0;
-    }
 
     return ret;
 }
diff --git a/libavcodec/g722dec.c b/libavcodec/g722dec.c
index 51f87c9d3c..2be47159a4 100644
--- a/libavcodec/g722dec.c
+++ b/libavcodec/g722dec.c
@@ -66,9 +66,6 @@ static av_cold int g722_decode_init(AVCodecContext * avctx)
     c->band[1].scale_factor = 2;
     c->prev_samples_pos = 22;
 
-    if (avctx->lowres)
-        avctx->sample_rate /= 2;
-
     return 0;
 }
 
@@ -88,15 +85,22 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
 {
     G722Context *c = avctx->priv_data;
     int16_t *out_buf = data;
-    int j, out_len = 0;
+    int j, out_len;
     const int skip = 8 - avctx->bits_per_coded_sample;
     const int16_t *quantizer_table = low_inv_quants[skip];
     GetBitContext gb;
 
+    out_len = avpkt->size * 2 * av_get_bytes_per_sample(avctx->sample_fmt);
+    if (*data_size < out_len) {
+        av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
+        return AVERROR(EINVAL);
+    }
+
     init_get_bits(&gb, avpkt->data, avpkt->size * 8);
 
     for (j = 0; j < avpkt->size; j++) {
-        int ilow, ihigh, rlow;
+        int ilow, ihigh, rlow, rhigh, dhigh;
+        int xout1, xout2;
 
         ihigh = get_bits(&gb, 2);
         ilow = get_bits(&gb, 6 - skip);
@@ -107,31 +111,24 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
 
         ff_g722_update_low_predictor(&c->band[0], ilow >> (2 - skip));
 
-        if (!avctx->lowres) {
-            const int dhigh = c->band[1].scale_factor *
-                              ff_g722_high_inv_quant[ihigh] >> 10;
-            const int rhigh = av_clip(dhigh + c->band[1].s_predictor,
-                                      -16384, 16383);
-            int xout1, xout2;
-
-            ff_g722_update_high_predictor(&c->band[1], dhigh, ihigh);
-
-            c->prev_samples[c->prev_samples_pos++] = rlow + rhigh;
-            c->prev_samples[c->prev_samples_pos++] = rlow - rhigh;
-            ff_g722_apply_qmf(c->prev_samples + c->prev_samples_pos - 24,
-                              &xout1, &xout2);
-            out_buf[out_len++] = av_clip_int16(xout1 >> 12);
-            out_buf[out_len++] = av_clip_int16(xout2 >> 12);
-            if (c->prev_samples_pos >= PREV_SAMPLES_BUF_SIZE) {
-                memmove(c->prev_samples,
-                        c->prev_samples + c->prev_samples_pos - 22,
-                        22 * sizeof(c->prev_samples[0]));
-                c->prev_samples_pos = 22;
-            }
-        } else
-            out_buf[out_len++] = rlow;
+        dhigh = c->band[1].scale_factor * ff_g722_high_inv_quant[ihigh] >> 10;
+        rhigh = av_clip(dhigh + c->band[1].s_predictor, -16384, 16383);
+
+        ff_g722_update_high_predictor(&c->band[1], dhigh, ihigh);
+
+        c->prev_samples[c->prev_samples_pos++] = rlow + rhigh;
+        c->prev_samples[c->prev_samples_pos++] = rlow - rhigh;
+        ff_g722_apply_qmf(c->prev_samples + c->prev_samples_pos - 24,
+                          &xout1, &xout2);
+        *out_buf++ = av_clip_int16(xout1 >> 12);
+        *out_buf++ = av_clip_int16(xout2 >> 12);
+        if (c->prev_samples_pos >= PREV_SAMPLES_BUF_SIZE) {
+            memmove(c->prev_samples, c->prev_samples + c->prev_samples_pos - 22,
+                    22 * sizeof(c->prev_samples[0]));
+            c->prev_samples_pos = 22;
+        }
     }
-    *data_size = out_len << 1;
+    *data_size = out_len;
     return avpkt->size;
 }
 
@@ -143,5 +140,4 @@ AVCodec ff_adpcm_g722_decoder = {
     .init           = g722_decode_init,
     .decode         = g722_decode_frame,
     .long_name      = NULL_IF_CONFIG_SMALL("G.722 ADPCM"),
-    .max_lowres     = 1,
 };
diff --git a/libavcodec/resample.c b/libavcodec/resample.c
index a1018b44fc..b5be910672 100644
--- a/libavcodec/resample.c
+++ b/libavcodec/resample.c
@@ -265,7 +265,6 @@ ReSampleContext *av_audio_resample_init(int output_channels, int input_channels,
         }
     }
 
-#define TAPS 16
     s->resample_context = av_resample_init(output_rate, input_rate,
                                            filter_length, log2_phase_count,
                                            linear, cutoff);
diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index 0bd8c600bf..7ff5116ffb 100644
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -33,8 +33,8 @@
 #include "avcodec.h"
 #include "get_bits.h"
 
-#define FORMAT_INT 1
-#define FORMAT_FLOAT 3
+#define FORMAT_SIMPLE    1
+#define FORMAT_ENCRYPTED 2
 
 #define MAX_ORDER 16
 typedef struct TTAFilter {
@@ -58,7 +58,7 @@ typedef struct TTAContext {
     AVCodecContext *avctx;
     GetBitContext gb;
 
-    int flags, channels, bps, is_float, data_length;
+    int format, channels, bps, data_length;
     int frame_length, last_frame_length, total_frames;
 
     int32_t *decode_buffer;
@@ -182,7 +182,7 @@ static int tta_get_unary(GetBitContext *gb)
     int ret = 0;
 
     // count ones
-    while(get_bits1(gb))
+    while (get_bits_left(gb) > 0 && get_bits1(gb))
         ret++;
     return ret;
 }
@@ -213,58 +213,54 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
     {
         /* signature */
         skip_bits(&s->gb, 32);
-//        if (get_bits_long(&s->gb, 32) != av_bswap32(AV_RL32("TTA1"))) {
-//            av_log(s->avctx, AV_LOG_ERROR, "Missing magic\n");
-//            return -1;
-//        }
-
-        s->flags = get_bits(&s->gb, 16);
-        if (s->flags != 1 && s->flags != 3)
-        {
-            av_log(s->avctx, AV_LOG_ERROR, "Invalid flags\n");
+
+        s->format = get_bits(&s->gb, 16);
+        if (s->format > 2) {
+            av_log(s->avctx, AV_LOG_ERROR, "Invalid format\n");
             return -1;
         }
-        s->is_float = (s->flags == FORMAT_FLOAT);
+        if (s->format == FORMAT_ENCRYPTED) {
+            av_log_missing_feature(s->avctx, "Encrypted TTA", 0);
+            return AVERROR(EINVAL);
+        }
         avctx->channels = s->channels = get_bits(&s->gb, 16);
         if (s->channels > 1 && s->channels < 9)
             avctx->channel_layout = tta_channel_layouts[s->channels-2];
         avctx->bits_per_coded_sample = get_bits(&s->gb, 16);
         s->bps = (avctx->bits_per_coded_sample + 7) / 8;
         avctx->sample_rate = get_bits_long(&s->gb, 32);
-        if(avctx->sample_rate > 1000000){ //prevent FRAME_TIME * avctx->sample_rate from overflowing and sanity check
-            av_log(avctx, AV_LOG_ERROR, "sample_rate too large\n");
-            return -1;
-        }
         s->data_length = get_bits_long(&s->gb, 32);
         skip_bits(&s->gb, 32); // CRC32 of header
 
-        if (s->is_float)
-        {
-            avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
-            av_log_ask_for_sample(s->avctx, "Unsupported sample format.\n");
-            return -1;
-        }
-        else switch(s->bps) {
-            case 1: avctx->sample_fmt = AV_SAMPLE_FMT_U8; break;
-            case 2: avctx->sample_fmt = AV_SAMPLE_FMT_S16; break;
-            case 3: avctx->bits_per_coded_sample = 24;
-            case 4: avctx->sample_fmt = AV_SAMPLE_FMT_S32; break;
-            default:
-                av_log_ask_for_sample(s->avctx,
-                                      "Invalid/unsupported sample format.\n");
-                return -1;
+        switch(s->bps) {
+        case 1: avctx->sample_fmt = AV_SAMPLE_FMT_U8; break;
+        case 2:
+            avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+            avctx->bits_per_raw_sample = 16;
+            break;
+        case 3:
+            avctx->sample_fmt = AV_SAMPLE_FMT_S32;
+            avctx->bits_per_raw_sample = 24;
+            break;
+        //case 4: avctx->sample_fmt = AV_SAMPLE_FMT_S32; break;
+        default:
+            av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported sample format.\n");
+            return AVERROR_INVALIDDATA;
         }
 
-        // FIXME: horribly broken, but directly from reference source
-#define FRAME_TIME 1.04489795918367346939
-        s->frame_length = (int)(FRAME_TIME * avctx->sample_rate);
+        // prevent overflow
+        if (avctx->sample_rate > 0x7FFFFF) {
+            av_log(avctx, AV_LOG_ERROR, "sample_rate too large\n");
+            return AVERROR(EINVAL);
+        }
+        s->frame_length = 256 * avctx->sample_rate / 245;
 
         s->last_frame_length = s->data_length % s->frame_length;
         s->total_frames = s->data_length / s->frame_length +
                         (s->last_frame_length ? 1 : 0);
 
-        av_log(s->avctx, AV_LOG_DEBUG, "flags: %x chans: %d bps: %d rate: %d block: %d\n",
-            s->flags, avctx->channels, avctx->bits_per_coded_sample, avctx->sample_rate,
+        av_log(s->avctx, AV_LOG_DEBUG, "format: %d chans: %d bps: %d rate: %d block: %d\n",
+            s->format, avctx->channels, avctx->bits_per_coded_sample, avctx->sample_rate,
             avctx->block_align);
         av_log(s->avctx, AV_LOG_DEBUG, "data_length: %d frame_length: %d last: %d total: %d\n",
             s->data_length, s->frame_length, s->last_frame_length, s->total_frames);
@@ -283,8 +279,10 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
         if (!s->decode_buffer)
             return AVERROR(ENOMEM);
         s->ch_ctx = av_malloc(avctx->channels * sizeof(*s->ch_ctx));
-        if (!s->ch_ctx)
+        if (!s->ch_ctx) {
+            av_freep(&s->decode_buffer);
             return AVERROR(ENOMEM);
+        }
     } else {
         av_log(avctx, AV_LOG_ERROR, "Wrong extradata present\n");
         return -1;
@@ -300,114 +298,113 @@ static int tta_decode_frame(AVCodecContext *avctx,
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     TTAContext *s = avctx->priv_data;
-    int i;
+    int i, out_size;
+    int cur_chan = 0, framelen = s->frame_length;
+    int32_t *p;
 
     init_get_bits(&s->gb, buf, buf_size*8);
-    {
-        int cur_chan = 0, framelen = s->frame_length;
-        int32_t *p;
 
-        if (*data_size < (framelen * s->channels * av_get_bits_per_sample_fmt(avctx->sample_fmt) / 8)) {
-            av_log(avctx, AV_LOG_ERROR, "Output buffer size is too small.\n");
-            return -1;
-        }
-        // FIXME: seeking
-        s->total_frames--;
-        if (!s->total_frames && s->last_frame_length)
-            framelen = s->last_frame_length;
-
-        // init per channel states
-        for (i = 0; i < s->channels; i++) {
-            s->ch_ctx[i].predictor = 0;
-            ttafilter_init(&s->ch_ctx[i].filter, ttafilter_configs[s->bps-1][0], ttafilter_configs[s->bps-1][1]);
-            rice_init(&s->ch_ctx[i].rice, 10, 10);
+    // FIXME: seeking
+    s->total_frames--;
+    if (!s->total_frames && s->last_frame_length)
+        framelen = s->last_frame_length;
+
+    out_size = framelen * s->channels * av_get_bytes_per_sample(avctx->sample_fmt);
+    if (*data_size < out_size) {
+        av_log(avctx, AV_LOG_ERROR, "Output buffer size is too small.\n");
+        return -1;
+    }
+
+    // decode directly to output buffer for 24-bit sample format
+    if (s->bps == 3)
+        s->decode_buffer = data;
+
+    // init per channel states
+    for (i = 0; i < s->channels; i++) {
+        s->ch_ctx[i].predictor = 0;
+        ttafilter_init(&s->ch_ctx[i].filter, ttafilter_configs[s->bps-1][0], ttafilter_configs[s->bps-1][1]);
+        rice_init(&s->ch_ctx[i].rice, 10, 10);
+    }
+
+    for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
+        int32_t *predictor = &s->ch_ctx[cur_chan].predictor;
+        TTAFilter *filter = &s->ch_ctx[cur_chan].filter;
+        TTARice *rice = &s->ch_ctx[cur_chan].rice;
+        uint32_t unary, depth, k;
+        int32_t value;
+
+        unary = tta_get_unary(&s->gb);
+
+        if (unary == 0) {
+            depth = 0;
+            k = rice->k0;
+        } else {
+            depth = 1;
+            k = rice->k1;
+            unary--;
         }
 
-        for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
-            int32_t *predictor = &s->ch_ctx[cur_chan].predictor;
-            TTAFilter *filter = &s->ch_ctx[cur_chan].filter;
-            TTARice *rice = &s->ch_ctx[cur_chan].rice;
-            uint32_t unary, depth, k;
-            int32_t value;
-
-            unary = tta_get_unary(&s->gb);
-
-            if (unary == 0) {
-                depth = 0;
-                k = rice->k0;
-            } else {
-                depth = 1;
-                k = rice->k1;
-                unary--;
-            }
+        if (get_bits_left(&s->gb) < k)
+            return -1;
 
-            if (get_bits_left(&s->gb) < k)
+        if (k) {
+            if (k > MIN_CACHE_BITS)
                 return -1;
+            value = (unary << k) + get_bits(&s->gb, k);
+        } else
+            value = unary;
+
+        // FIXME: copy paste from original
+        switch (depth) {
+        case 1:
+            rice->sum1 += value - (rice->sum1 >> 4);
+            if (rice->k1 > 0 && rice->sum1 < shift_16[rice->k1])
+                rice->k1--;
+            else if(rice->sum1 > shift_16[rice->k1 + 1])
+                rice->k1++;
+            value += shift_1[rice->k0];
+        default:
+            rice->sum0 += value - (rice->sum0 >> 4);
+            if (rice->k0 > 0 && rice->sum0 < shift_16[rice->k0])
+                rice->k0--;
+            else if(rice->sum0 > shift_16[rice->k0 + 1])
+                rice->k0++;
+        }
 
-            if (k) {
-                if (k > MIN_CACHE_BITS)
-                    return -1;
-                value = (unary << k) + get_bits(&s->gb, k);
-            } else
-                value = unary;
-
-            // FIXME: copy paste from original
-            switch (depth) {
-            case 1:
-                rice->sum1 += value - (rice->sum1 >> 4);
-                if (rice->k1 > 0 && rice->sum1 < shift_16[rice->k1])
-                    rice->k1--;
-                else if(rice->sum1 > shift_16[rice->k1 + 1])
-                    rice->k1++;
-                value += shift_1[rice->k0];
-            default:
-                rice->sum0 += value - (rice->sum0 >> 4);
-                if (rice->k0 > 0 && rice->sum0 < shift_16[rice->k0])
-                    rice->k0--;
-                else if(rice->sum0 > shift_16[rice->k0 + 1])
-                    rice->k0++;
-            }
-
-            // extract coded value
+        // extract coded value
 #define UNFOLD(x) (((x)&1) ? (++(x)>>1) : (-(x)>>1))
-            *p = UNFOLD(value);
+        *p = UNFOLD(value);
 
-            // run hybrid filter
-            ttafilter_process(filter, p, 0);
+        // run hybrid filter
+        ttafilter_process(filter, p, 0);
 
-            // fixed order prediction
+        // fixed order prediction
 #define PRED(x, k) (int32_t)((((uint64_t)x << k) - x) >> k)
-            switch (s->bps) {
-                case 1: *p += PRED(*predictor, 4); break;
-                case 2:
-                case 3: *p += PRED(*predictor, 5); break;
-                case 4: *p += *predictor; break;
-            }
-            *predictor = *p;
-
-            /*if ((get_bits_count(&s->gb)+7)/8 > buf_size)
-            {
-                av_log(NULL, AV_LOG_INFO, "overread!!\n");
-                break;
-            }*/
-
-            // flip channels
-            if (cur_chan < (s->channels-1))
-                cur_chan++;
-            else {
-                // decorrelate in case of stereo integer
-                if (!s->is_float && (s->channels > 1)) {
-                    int32_t *r = p - 1;
-                    for (*p += *r / 2; r > p - s->channels; r--)
-                        *r = *(r + 1) - *r;
-                }
-                cur_chan = 0;
+        switch (s->bps) {
+            case 1: *p += PRED(*predictor, 4); break;
+            case 2:
+            case 3: *p += PRED(*predictor, 5); break;
+            case 4: *p += *predictor; break;
+        }
+        *predictor = *p;
+
+        // flip channels
+        if (cur_chan < (s->channels-1))
+            cur_chan++;
+        else {
+            // decorrelate in case of stereo integer
+            if (s->channels > 1) {
+                int32_t *r = p - 1;
+                for (*p += *r / 2; r > p - s->channels; r--)
+                    *r = *(r + 1) - *r;
             }
+            cur_chan = 0;
         }
+    }
 
-        if (get_bits_left(&s->gb) < 32)
-            return -1;
-        skip_bits(&s->gb, 32); // frame crc
+    if (get_bits_left(&s->gb) < 32)
+        return -1;
+    skip_bits(&s->gb, 32); // frame crc
 
         // convert to output buffer
         switch(s->bps) {
@@ -415,32 +412,29 @@ static int tta_decode_frame(AVCodecContext *avctx,
                 uint8_t *samples = data;
                 for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++)
                     *samples++ = *p + 0x80;
-                *data_size = samples - (uint8_t *)data;
                 break;
             }
             case 2: {
                 uint16_t *samples = data;
-                for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
-//                    *samples++ = (unsigned char)*p;
-//                    *samples++ = (unsigned char)(*p >> 8);
+                for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++)
                     *samples++ = *p;
-                }
-                *data_size = (uint8_t *)samples - (uint8_t *)data;
                 break;
             }
             case 3: {
+                // shift samples for 24-bit sample format
                 int32_t *samples = data;
                 for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++)
-                    *samples++ = AV_RN32(p) << 8;
-                *data_size = (uint8_t *)samples - (uint8_t *)data;
+                    *samples++ <<= 8;
+                // reset decode buffer
+                s->decode_buffer = NULL;
                 break;
             }
             default:
                 av_log(s->avctx, AV_LOG_ERROR, "Error, only 16bit samples supported!\n");
         }
-    }
 
-//    return get_bits_count(&s->gb)+7)/8;
+    *data_size = out_size;
+
     return buf_size;
 }
 
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 441f85d503..425198fcda 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -540,8 +540,10 @@ typedef struct AVStream {
      */
     AVRational time_base;
     int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
+#if FF_API_STREAM_COPY
     /* ffmpeg.c private use */
-    int stream_copy; /**< If set, just copy stream. */
+    attribute_deprecated int stream_copy; /**< If set, just copy stream. */
+#endif
     enum AVDiscard discard; ///< Selects which packets can be discarded at will and do not need to be demuxed.
 
 #if FF_API_AVSTREAM_QUALITY
@@ -772,7 +774,9 @@ typedef struct AVFormatContext {
     attribute_deprecated int mux_rate;
 #endif
     unsigned int packet_size;
-    int preload;
+#if FF_API_PRELOAD
+    attribute_deprecated int preload;
+#endif
     int max_delay;
 
 #if FF_API_LOOP_OUTPUT
diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
index 817f541805..9e19a3d5e4 100644
--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -77,6 +77,7 @@ typedef struct {
     double vcd_padding_bitrate; //FIXME floats
     int64_t vcd_padding_bytes_written;
 
+    int preload;
 } MpegMuxContext;
 
 extern AVOutputFormat ff_mpeg1vcd_muxer;
@@ -1158,9 +1159,15 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
     StreamInfo *stream = st->priv_data;
     int64_t pts, dts;
     PacketDesc *pkt_desc;
-    const int preload= av_rescale(ctx->preload, 90000, AV_TIME_BASE);
+    int preload;
     const int is_iframe = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (pkt->flags & AV_PKT_FLAG_KEY);
 
+#if FF_API_PRELOAD
+    if (ctx->preload)
+        s->preload = ctx->preload;
+#endif
+    preload = av_rescale(s->preload, 90000, AV_TIME_BASE);
+
     pts= pkt->pts;
     dts= pkt->dts;
 
@@ -1237,6 +1244,7 @@ static int mpeg_mux_end(AVFormatContext *ctx)
 #define E AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
     { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, {0}, 0, INT_MAX, E },
+    { "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload),  AV_OPT_TYPE_INT, {500000}, 0, INT_MAX, E},
     { NULL },
 };
 
diff --git a/libavformat/tta.c b/libavformat/tta.c
index ca2d36b44f..4d0c6adeee 100644
--- a/libavformat/tta.c
+++ b/libavformat/tta.c
@@ -107,6 +107,10 @@ static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap)
         return -1;
     }
     st->codec->extradata = av_mallocz(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE);
+    if (!st->codec->extradata) {
+        st->codec->extradata_size = 0;
+        return AVERROR(ENOMEM);
+    }
     avio_seek(s->pb, start_offset, SEEK_SET);
     avio_read(s->pb, st->codec->extradata, st->codec->extradata_size);
 
diff --git a/libavformat/utils.c b/libavformat/utils.c
index db27024904..1c6a4684a1 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1932,29 +1932,24 @@ static void update_stream_timings(AVFormatContext *ic)
                 if (start_time1 < start_time_text)
                     start_time_text = start_time1;
             } else
-            if (start_time1 < start_time)
-                start_time = start_time1;
+            start_time = FFMIN(start_time, start_time1);
             if (st->duration != AV_NOPTS_VALUE) {
                 end_time1 = start_time1
                           + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
-                if (end_time1 > end_time)
-                    end_time = end_time1;
+                end_time = FFMAX(end_time, end_time1);
             }
         }
         if (st->duration != AV_NOPTS_VALUE) {
             duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
-            if (duration1 > duration)
-                duration = duration1;
+            duration = FFMAX(duration, duration1);
         }
     }
     if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
         start_time = start_time_text;
     if (start_time != INT64_MAX) {
         ic->start_time = start_time;
-        if (end_time != INT64_MIN) {
-            if (end_time - start_time > duration)
-                duration = end_time - start_time;
-        }
+        if (end_time != INT64_MIN)
+            duration = FFMAX(duration, end_time - start_time);
     }
     if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
         ic->duration = duration;
@@ -2108,8 +2103,7 @@ static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
         file_size = 0;
     } else {
         file_size = avio_size(ic->pb);
-        if (file_size < 0)
-            file_size = 0;
+        file_size = FFMAX(0, file_size);
     }
 
     if ((!strcmp(ic->iformat->name, "mpeg") ||
diff --git a/libavformat/version.h b/libavformat/version.h
index 333a3a0125..58c3a74bff 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -101,5 +101,11 @@
 #ifndef FF_API_NEW_STREAM
 #define FF_API_NEW_STREAM              (LIBAVFORMAT_VERSION_MAJOR < 54)
 #endif
+#ifndef FF_API_PRELOAD
+#define FF_API_PRELOAD                 (LIBAVFORMAT_VERSION_MAJOR < 54)
+#endif
+#ifndef FF_API_STREAM_COPY
+#define FF_API_STREAM_COPY             (LIBAVFORMAT_VERSION_MAJOR < 54)
+#endif
 
 #endif /* AVFORMAT_VERSION_H */