fftools/graphprint: Add execution graph printing

The key benefits are:

- Different to other graph printing methods, this is outputting:
  - all graphs with runtime state
    (including auto-inserted filters)
  - each graph with its inputs and outputs
  - all filters with their in- and output pads
  - all connections between all input- and output pads
  - for each connection:
    - the runtime-negotiated format and media type
    - the hw context
    - if video hw context, both: hw pixfmt + sw pixfmt
- Output can either be printed to stdout or written to specified file
- Output is machine-readable
- Use the same output implementation as ffprobe, supporting multiple
  formats

Signed-off-by: softworkz <softworkz@hotmail.com>

1 files changed, 1107 insertions, 0 deletions

diff --git a/fftools/graph/graphprint.c b/fftools/graph/graphprint.c
new file mode 100644
index 0000000000..fc94a75797
--- /dev/null
+++ b/fftools/graph/graphprint.c
@@ -0,0 +1,1107 @@
+/*
+ * Copyright (c) 2018-2025 - softworkz
+ *
+ * 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
+ * output writers for filtergraph details
+ */
+
+#include <string.h>
+#include <stdatomic.h>
+
+#include "graphprint.h"
+
+#include "fftools/ffmpeg_filter.h"
+#include "fftools/ffmpeg_mux.h"
+
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/dict.h"
+#include "libavutil/common.h"
+#include "libavfilter/avfilter.h"
+#include "libavutil/buffer.h"
+#include "libavutil/hwcontext.h"
+#include "fftools/textformat/avtextformat.h"
+#include "fftools/textformat/tf_mermaid.h"
+#include "fftools/resources/resman.h"
+
+typedef enum {
+    SECTION_ID_ROOT,
+    SECTION_ID_FILTERGRAPHS,
+    SECTION_ID_FILTERGRAPH,
+    SECTION_ID_GRAPH_INPUTS,
+    SECTION_ID_GRAPH_INPUT,
+    SECTION_ID_GRAPH_OUTPUTS,
+    SECTION_ID_GRAPH_OUTPUT,
+    SECTION_ID_FILTERS,
+    SECTION_ID_FILTER,
+    SECTION_ID_FILTER_INPUTS,
+    SECTION_ID_FILTER_INPUT,
+    SECTION_ID_FILTER_OUTPUTS,
+    SECTION_ID_FILTER_OUTPUT,
+    SECTION_ID_HWFRAMESCONTEXT,
+    SECTION_ID_INPUTFILES,
+    SECTION_ID_INPUTFILE,
+    SECTION_ID_INPUTSTREAMS,
+    SECTION_ID_INPUTSTREAM,
+    SECTION_ID_OUTPUTFILES,
+    SECTION_ID_OUTPUTFILE,
+    SECTION_ID_OUTPUTSTREAMS,
+    SECTION_ID_OUTPUTSTREAM,
+    SECTION_ID_STREAMLINKS,
+    SECTION_ID_STREAMLINK,
+    SECTION_ID_DECODERS,
+    SECTION_ID_DECODER,
+    SECTION_ID_ENCODERS,
+    SECTION_ID_ENCODER,
+} SectionID;
+
+static struct AVTextFormatSection sections[] = {
+    [SECTION_ID_ROOT]            = { SECTION_ID_ROOT, "root", AV_TEXTFORMAT_SECTION_FLAG_IS_WRAPPER, { SECTION_ID_FILTERGRAPHS, SECTION_ID_INPUTFILES, SECTION_ID_OUTPUTFILES, SECTION_ID_DECODERS, SECTION_ID_ENCODERS, SECTION_ID_STREAMLINKS, -1 } },
+
+    [SECTION_ID_FILTERGRAPHS]    = { SECTION_ID_FILTERGRAPHS, "graphs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTERGRAPH, -1 } },
+    [SECTION_ID_FILTERGRAPH]     = { SECTION_ID_FILTERGRAPH, "graph", AV_TEXTFORMAT_SECTION_FLAG_HAS_VARIABLE_FIELDS, { SECTION_ID_GRAPH_INPUTS, SECTION_ID_GRAPH_OUTPUTS, SECTION_ID_FILTERS, -1 }, .element_name = "graph_info" },
+
+    [SECTION_ID_GRAPH_INPUTS]    = { SECTION_ID_GRAPH_INPUTS, "graph_inputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_GRAPH_INPUT, -1 }, .id_key = "id" },
+    [SECTION_ID_GRAPH_INPUT]     = { SECTION_ID_GRAPH_INPUT, "graph_input", 0, { -1 }, .id_key = "filter_id" },
+
+    [SECTION_ID_GRAPH_OUTPUTS]   = { SECTION_ID_GRAPH_OUTPUTS, "graph_outputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_GRAPH_OUTPUT, -1 }, .id_key = "id" },
+    [SECTION_ID_GRAPH_OUTPUT]    = { SECTION_ID_GRAPH_OUTPUT, "graph_output", 0, { -1 }, .id_key = "filter_id" },
+
+    [SECTION_ID_FILTERS]         = { SECTION_ID_FILTERS, "filters", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_FILTER, -1 }, .id_key = "graph_id" },
+    [SECTION_ID_FILTER]          = { SECTION_ID_FILTER, "filter", AV_TEXTFORMAT_SECTION_FLAG_IS_SHAPE | AV_TEXTFORMAT_SECTION_PRINT_TAGS, { SECTION_ID_FILTER_INPUTS, SECTION_ID_FILTER_OUTPUTS, -1 }, .id_key = "filter_id" },
+
+    [SECTION_ID_FILTER_INPUTS]   = { SECTION_ID_FILTER_INPUTS, "filter_inputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTER_INPUT, -1 } },
+    [SECTION_ID_FILTER_INPUT]    = { SECTION_ID_FILTER_INPUT, "filter_input", AV_TEXTFORMAT_SECTION_FLAG_HAS_LINKS, { SECTION_ID_HWFRAMESCONTEXT, -1 }, .id_key = "filter_id", .src_id_key = "source_filter_id", .dest_id_key = "filter_id" },
+
+    [SECTION_ID_FILTER_OUTPUTS]  = { SECTION_ID_FILTER_OUTPUTS, "filter_outputs", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_FILTER_OUTPUT, -1 } },
+    [SECTION_ID_FILTER_OUTPUT]   = { SECTION_ID_FILTER_OUTPUT, "filter_output", AV_TEXTFORMAT_SECTION_FLAG_HAS_LINKS, { SECTION_ID_HWFRAMESCONTEXT, -1 }, .id_key = "filter_id", .src_id_key = "filter_id", .dest_id_key = "dest_filter_id" },
+
+    [SECTION_ID_HWFRAMESCONTEXT] = { SECTION_ID_HWFRAMESCONTEXT, "hw_frames_context",  0, { -1 }, },
+
+    [SECTION_ID_INPUTFILES]      = { SECTION_ID_INPUTFILES, "inputfiles", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_INPUTFILE, -1 }, .id_key = "id" },
+    [SECTION_ID_INPUTFILE]       = { SECTION_ID_INPUTFILE, "inputfile", AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_INPUTSTREAMS, -1 }, .id_key = "id" },
+
+    [SECTION_ID_INPUTSTREAMS]    = { SECTION_ID_INPUTSTREAMS, "inputstreams", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_INPUTSTREAM, -1 }, .id_key = "id" },
+    [SECTION_ID_INPUTSTREAM]     = { SECTION_ID_INPUTSTREAM, "inputstream", AV_TEXTFORMAT_SECTION_FLAG_IS_SHAPE | AV_TEXTFORMAT_SECTION_PRINT_TAGS, { -1 }, .id_key = "id" },
+
+    [SECTION_ID_OUTPUTFILES]     = { SECTION_ID_OUTPUTFILES, "outputfiles", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_OUTPUTFILE, -1 }, .id_key = "id" },
+    [SECTION_ID_OUTPUTFILE]      = { SECTION_ID_OUTPUTFILE, "outputfile", AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_OUTPUTSTREAMS, -1 }, .id_key = "id" },
+
+    [SECTION_ID_OUTPUTSTREAMS]   = { SECTION_ID_OUTPUTSTREAMS, "outputstreams", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_OUTPUTSTREAM, -1 }, .id_key = "id" },
+    [SECTION_ID_OUTPUTSTREAM]    = { SECTION_ID_OUTPUTSTREAM, "outputstream", AV_TEXTFORMAT_SECTION_FLAG_IS_SHAPE | AV_TEXTFORMAT_SECTION_PRINT_TAGS, { -1 }, .id_key = "id", },
+
+    [SECTION_ID_STREAMLINKS]     = { SECTION_ID_STREAMLINKS, "streamlinks", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAMLINK, -1 } },
+    [SECTION_ID_STREAMLINK]      = { SECTION_ID_STREAMLINK, "streamlink", AV_TEXTFORMAT_SECTION_FLAG_HAS_LINKS, { -1 }, .src_id_key = "source_stream_id", .dest_id_key = "dest_stream_id" },
+
+    [SECTION_ID_DECODERS]        = { SECTION_ID_DECODERS, "decoders", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_DECODER, -1 } },
+    [SECTION_ID_DECODER]         = { SECTION_ID_DECODER, "decoder", AV_TEXTFORMAT_SECTION_FLAG_IS_SHAPE | AV_TEXTFORMAT_SECTION_PRINT_TAGS | AV_TEXTFORMAT_SECTION_FLAG_HAS_LINKS, { -1 }, .id_key = "id", .src_id_key = "source_id", .dest_id_key = "id" },
+
+    [SECTION_ID_ENCODERS]        = { SECTION_ID_ENCODERS, "encoders", AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY | AV_TEXTFORMAT_SECTION_FLAG_IS_SUBGRAPH, { SECTION_ID_ENCODER, -1 } },
+    [SECTION_ID_ENCODER]         = { SECTION_ID_ENCODER, "encoder", AV_TEXTFORMAT_SECTION_FLAG_IS_SHAPE | AV_TEXTFORMAT_SECTION_PRINT_TAGS | AV_TEXTFORMAT_SECTION_FLAG_HAS_LINKS, { -1 }, .id_key = "id", .src_id_key = "id", .dest_id_key = "dest_id" },
+};
+
+typedef struct GraphPrintContext {
+    AVTextFormatContext *tfc;
+    AVTextWriterContext *wctx;
+    AVDiagramConfig diagram_config;
+
+    int id_prefix_num;
+    int is_diagram;
+    int opt_flags;
+    int skip_buffer_filters;
+    AVBPrint pbuf;
+
+} GraphPrintContext;
+
+/* Text Format API Shortcuts */
+#define print_id(k, v)          print_sanizied_id(gpc, k, v, 0)
+#define print_id_noprefix(k, v) print_sanizied_id(gpc, k, v, 1)
+#define print_int(k, v)         avtext_print_integer(tfc, k, v, 0)
+#define print_int_opt(k, v)     avtext_print_integer(tfc, k, v, gpc->opt_flags)
+#define print_q(k, v, s)        avtext_print_rational(tfc, k, v, s)
+#define print_str(k, v)         avtext_print_string(tfc, k, v, 0)
+#define print_str_opt(k, v)     avtext_print_string(tfc, k, v, gpc->opt_flags)
+#define print_val(k, v, u)      avtext_print_unit_int(tfc, k, v, u)
+
+#define print_fmt(k, f, ...) do {              \
+    av_bprint_clear(&gpc->pbuf);                    \
+    av_bprintf(&gpc->pbuf, f, __VA_ARGS__);         \
+    avtext_print_string(tfc, k, gpc->pbuf.str, 0);    \
+} while (0)
+
+#define print_fmt_opt(k, f, ...) do {              \
+    av_bprint_clear(&gpc->pbuf);                    \
+    av_bprintf(&gpc->pbuf, f, __VA_ARGS__);         \
+    avtext_print_string(tfc, k, gpc->pbuf.str, gpc->opt_flags);    \
+} while (0)
+
+
+static atomic_int prefix_num = 0;
+
+static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
+{
+    unsigned i;
+    for (i = 0; src[i] && i < dst_size - 1; i++)
+        dst[i]      = (char)av_toupper(src[i]);
+    dst[i] = 0;
+    return dst;
+}
+
+static char *get_extension(const char *url)
+{
+    const char *dot = NULL;
+    const char *sep = NULL;
+    const char *end;
+
+    if (!url)
+        return NULL;
+
+    /* Stop at the first query ('?') or fragment ('#') delimiter so they
+     * are not considered part of the path. */
+    end = strpbrk(url, "?#");
+    if (!end)
+        end = url + strlen(url);
+
+    /* Scan the path component only. */
+    for (const char *p = url; p < end; p++) {
+        if (*p == '.')
+            dot = p;
+        else if (*p == '/' || *p == '\\')
+            sep = p;
+    }
+
+    /* Validate that we have a proper extension. */
+    if (dot && dot != url && (!sep || dot > sep + 1) && (dot + 1) < end) {
+        /* Use FFmpeg helper to duplicate the substring. */
+        return av_strndup(dot + 1, end - (dot + 1));
+    }
+
+    return NULL;
+}
+
+static void print_hwdevicecontext(const GraphPrintContext *gpc, const AVHWDeviceContext *hw_device_context)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+
+    if (!hw_device_context)
+        return;
+
+    print_int_opt("has_hw_device_context", 1);
+    print_str_opt("hw_device_type", av_hwdevice_get_type_name(hw_device_context->type));
+}
+
+static void print_hwframescontext(const GraphPrintContext *gpc, const AVHWFramesContext *hw_frames_context)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+    const AVPixFmtDescriptor *pix_desc_hw;
+    const AVPixFmtDescriptor *pix_desc_sw;
+
+    if (!hw_frames_context || !hw_frames_context->device_ctx)
+        return;
+
+    avtext_print_section_header(tfc, NULL, SECTION_ID_HWFRAMESCONTEXT);
+
+    print_int_opt("has_hw_frames_context", 1);
+    print_str("hw_device_type", av_hwdevice_get_type_name(hw_frames_context->device_ctx->type));
+
+    pix_desc_hw = av_pix_fmt_desc_get(hw_frames_context->format);
+    if (pix_desc_hw) {
+        print_str("hw_pixel_format", pix_desc_hw->name);
+        if (pix_desc_hw->alias)
+            print_str_opt("hw_pixel_format_alias", pix_desc_hw->alias);
+    }
+
+    pix_desc_sw = av_pix_fmt_desc_get(hw_frames_context->sw_format);
+    if (pix_desc_sw) {
+        print_str("sw_pixel_format", pix_desc_sw->name);
+        if (pix_desc_sw->alias)
+            print_str_opt("sw_pixel_format_alias", pix_desc_sw->alias);
+    }
+
+    print_int_opt("width", hw_frames_context->width);
+    print_int_opt("height", hw_frames_context->height);
+    print_int_opt("initial_pool_size", hw_frames_context->initial_pool_size);
+
+    avtext_print_section_footer(tfc); // SECTION_ID_HWFRAMESCONTEXT
+}
+
+static void print_link(GraphPrintContext *gpc, AVFilterLink *link)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+    AVBufferRef *hw_frames_ctx;
+    char layout_string[64];
+
+    if (!link)
+        return;
+
+    hw_frames_ctx = avfilter_link_get_hw_frames_ctx(link);
+
+    print_str_opt("media_type", av_get_media_type_string(link->type));
+
+    switch (link->type) {
+    case AVMEDIA_TYPE_VIDEO:
+
+        if (hw_frames_ctx && hw_frames_ctx->data) {
+            AVHWFramesContext *      hwfctx      = (AVHWFramesContext *)hw_frames_ctx->data;
+            const AVPixFmtDescriptor *pix_desc_hw = av_pix_fmt_desc_get(hwfctx->format);
+            const AVPixFmtDescriptor *pix_desc_sw = av_pix_fmt_desc_get(hwfctx->sw_format);
+            if (pix_desc_hw && pix_desc_sw)
+                print_fmt("format", "%s | %s", pix_desc_hw->name, pix_desc_sw->name);
+        } else {
+            print_str("format", av_x_if_null(av_get_pix_fmt_name(link->format), "?"));
+        }
+
+        if (link->w && link->h) {
+            if (tfc->show_value_unit) {
+                print_fmt("size", "%dx%d", link->w, link->h);
+            } else {
+                print_int("width", link->w);
+                print_int("height", link->h);
+            }
+        }
+
+        print_q("sar", link->sample_aspect_ratio, ':');
+
+        if (link->color_range != AVCOL_RANGE_UNSPECIFIED)
+            print_str_opt("color_range", av_color_range_name(link->color_range));
+
+        if (link->colorspace != AVCOL_SPC_UNSPECIFIED)
+            print_str("color_space", av_color_space_name(link->colorspace));
+        break;
+
+    case AVMEDIA_TYPE_SUBTITLE:
+        ////print_str("format", av_x_if_null(av_get_subtitle_fmt_name(link->format), "?"));
+
+        if (link->w && link->h) {
+            if (tfc->show_value_unit) {
+                print_fmt("size", "%dx%d", link->w, link->h);
+            } else {
+                print_int("width", link->w);
+                print_int("height", link->h);
+            }
+        }
+
+        break;
+
+    case AVMEDIA_TYPE_AUDIO:
+        av_channel_layout_describe(&link->ch_layout, layout_string, sizeof(layout_string));
+        print_str("channel_layout", layout_string);
+        print_val("channels", link->ch_layout.nb_channels, "ch");
+        if (tfc->show_value_unit)
+            print_fmt("sample_rate", "%d.1 kHz", link->sample_rate / 1000);
+        else
+            print_val("sample_rate", link->sample_rate, "Hz");
+
+        break;
+    }
+
+    print_fmt_opt("sample_rate", "%d/%d", link->time_base.num, link->time_base.den);
+
+    if (hw_frames_ctx && hw_frames_ctx->data)
+        print_hwframescontext(gpc, (AVHWFramesContext *)hw_frames_ctx->data);
+}
+
+static char sanitize_char(const char c)
+{
+    if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
+        return c;
+    return '_';
+}
+
+static void print_sanizied_id(const GraphPrintContext *gpc, const char *key, const char *id_str, int skip_prefix)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+    AVBPrint buf;
+
+    if (!key || !id_str)
+        return;
+
+    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    if (!skip_prefix)
+        av_bprintf(&buf, "G%d_", gpc->id_prefix_num);
+
+    // sanizize section id
+    for (const char *p = id_str; *p; p++)
+        av_bprint_chars(&buf, sanitize_char(*p), 1);
+
+    print_str(key, buf.str);
+
+    av_bprint_finalize(&buf, NULL);
+}
+
+static void print_section_header_id(const GraphPrintContext *gpc, int section_id, const char *id_str, int skip_prefix)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+    AVTextFormatSectionContext sec_ctx = { 0 };
+    AVBPrint buf;
+
+    if (!id_str)
+        return;
+
+    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    if (!skip_prefix)
+        av_bprintf(&buf, "G%d_", gpc->id_prefix_num);
+
+    // sanizize section id
+    for (const char *p = id_str; *p; p++)
+        av_bprint_chars(&buf, sanitize_char(*p), 1);
+
+    sec_ctx.context_id = buf.str;
+
+    avtext_print_section_header(tfc, &sec_ctx, section_id);
+
+    av_bprint_finalize(&buf, NULL);
+}
+
+static const char *get_filterpad_name(const AVFilterPad *pad)
+{
+    return pad ? avfilter_pad_get_name(pad, 0) : "pad";
+}
+
+static void print_filter(GraphPrintContext *gpc, const AVFilterContext *filter, AVDictionary *input_map, AVDictionary *output_map)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+    AVTextFormatSectionContext sec_ctx = { 0 };
+
+    print_section_header_id(gpc, SECTION_ID_FILTER, filter->name, 0);
+
+    ////print_id("filter_id", filter->name);
+
+    if (filter->filter) {
+        print_str("filter_name", filter->filter->name);
+        print_str_opt("description", filter->filter->description);
+        print_int_opt("nb_inputs", filter->nb_inputs);
+        print_int_opt("nb_outputs", filter->nb_outputs);
+    }
+
+    if (filter->hw_device_ctx) {
+        AVHWDeviceContext *device_context = (AVHWDeviceContext *)filter->hw_device_ctx->data;
+        print_hwdevicecontext(gpc, device_context);
+        if (filter->extra_hw_frames > 0)
+            print_int("extra_hw_frames", filter->extra_hw_frames);
+    }
+
+    avtext_print_section_header(tfc, NULL, SECTION_ID_FILTER_INPUTS);
+
+    for (unsigned i = 0; i < filter->nb_inputs; i++) {
+        AVDictionaryEntry *dic_entry;
+        AVFilterLink *link = filter->inputs[i];
+
+        sec_ctx.context_type = av_get_media_type_string(link->type);
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_FILTER_INPUT);
+        sec_ctx.context_type = NULL;
+
+        print_int_opt("input_index", i);
+        print_str_opt("pad_name", get_filterpad_name(link->dstpad));;
+
+        dic_entry = av_dict_get(input_map, link->src->name, NULL, 0);
+        if (dic_entry) {
+            char buf[256];
+            (void)snprintf(buf, sizeof(buf), "in_%s", dic_entry->value);
+            print_id_noprefix("source_filter_id", buf);
+        } else {
+            print_id("source_filter_id", link->src->name);
+        }
+
+        print_str_opt("source_pad_name", get_filterpad_name(link->srcpad));
+        print_id("filter_id", filter->name);
+
+        print_link(gpc, link);
+
+        avtext_print_section_footer(tfc); // SECTION_ID_FILTER_INPUT
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_FILTER_INPUTS
+
+    avtext_print_section_header(tfc, NULL, SECTION_ID_FILTER_OUTPUTS);
+
+    for (unsigned i = 0; i < filter->nb_outputs; i++) {
+        AVDictionaryEntry *dic_entry;
+        AVFilterLink *link = filter->outputs[i];
+        char buf[256];
+
+        sec_ctx.context_type = av_get_media_type_string(link->type);
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_FILTER_OUTPUT);
+        sec_ctx.context_type = NULL;
+
+        dic_entry = av_dict_get(output_map, link->dst->name, NULL, 0);
+        if (dic_entry) {
+            (void)snprintf(buf, sizeof(buf), "out_%s", dic_entry->value);
+            print_id_noprefix("dest_filter_id", buf);
+        } else {
+            print_id("dest_filter_id", link->dst->name);
+        }
+
+        print_int_opt("output_index", i);
+        print_str_opt("pad_name", get_filterpad_name(link->srcpad));
+        ////print_id("dest_filter_id", link->dst->name);
+        print_str_opt("dest_pad_name", get_filterpad_name(link->dstpad));
+        print_id("filter_id", filter->name);
+
+        print_link(gpc, link);
+
+        avtext_print_section_footer(tfc); // SECTION_ID_FILTER_OUTPUT
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_FILTER_OUTPUTS
+
+    avtext_print_section_footer(tfc); // SECTION_ID_FILTER
+}
+
+static void init_sections(void)
+{
+    for (unsigned i = 0; i < FF_ARRAY_ELEMS(sections); i++)
+        sections[i].show_all_entries = 1;
+}
+
+static void print_filtergraph_single(GraphPrintContext *gpc, FilterGraph *fg, AVFilterGraph *graph)
+{
+    AVTextFormatContext *tfc = gpc->tfc;
+    FilterGraphPriv *fgp = fgp_from_fg(fg);
+    AVDictionary *input_map = NULL;
+    AVDictionary *output_map = NULL;
+
+    print_int("graph_index", fg->index);
+    print_fmt("name", "Graph %d.%d", gpc->id_prefix_num, fg->index);
+    print_fmt("id", "Graph_%d_%d", gpc->id_prefix_num, fg->index);
+    print_str("description", fgp->graph_desc);
+
+    print_section_header_id(gpc, SECTION_ID_GRAPH_INPUTS, "Input_File", 0);
+
+    for (int i = 0; i < fg->nb_inputs; i++) {
+        InputFilterPriv *ifilter = ifp_from_ifilter(fg->inputs[i]);
+        enum AVMediaType media_type = ifilter->type;
+
+        avtext_print_section_header(tfc, NULL, SECTION_ID_GRAPH_INPUT);
+
+        print_int("input_index", ifilter->index);
+
+        if (ifilter->linklabel)
+            print_str("link_label", (const char*)ifilter->linklabel);
+
+        if (ifilter->filter) {
+            print_id("filter_id", ifilter->filter->name);
+            print_str("filter_name", ifilter->filter->filter->name);
+        }
+
+        if (ifilter->linklabel && ifilter->filter)
+            av_dict_set(&input_map, ifilter->filter->name, (const char *)ifilter->linklabel, 0);
+        else if (ifilter->opts.name && ifilter->filter)
+            av_dict_set(&input_map, ifilter->filter->name, (const char *)ifilter->opts.name, 0);
+
+        print_str("media_type", av_get_media_type_string(media_type));
+
+        avtext_print_section_footer(tfc); // SECTION_ID_GRAPH_INPUT
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_GRAPH_INPUTS
+
+    print_section_header_id(gpc, SECTION_ID_GRAPH_OUTPUTS, "Output_File", 0);
+
+    for (int i = 0; i < fg->nb_outputs; i++) {
+        OutputFilterPriv *ofilter = ofp_from_ofilter(fg->outputs[i]);
+
+        avtext_print_section_header(tfc, NULL, SECTION_ID_GRAPH_OUTPUT);
+
+        print_int("output_index", ofilter->index);
+
+        print_str("name", ofilter->name);
+
+        if (fg->outputs[i]->linklabel)
+            print_str("link_label", (const char*)fg->outputs[i]->linklabel);
+
+        if (ofilter->filter) {
+            print_id("filter_id", ofilter->filter->name);
+            print_str("filter_name", ofilter->filter->filter->name);
+        }
+
+        if (ofilter->name && ofilter->filter)
+            av_dict_set(&output_map, ofilter->filter->name, ofilter->name, 0);
+
+
+        print_str("media_type", av_get_media_type_string(fg->outputs[i]->type));
+
+        avtext_print_section_footer(tfc); // SECTION_ID_GRAPH_OUTPUT
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_GRAPH_OUTPUTS
+
+    if (graph) {
+        AVTextFormatSectionContext sec_ctx = { 0 };
+
+        sec_ctx.context_id = av_asprintf("Graph_%d_%d", gpc->id_prefix_num, fg->index);
+
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_FILTERS);
+
+        if (gpc->is_diagram) {
+            print_fmt("name", "Graph %d.%d", gpc->id_prefix_num, fg->index);
+            print_str("description", fgp->graph_desc);
+            print_str("id", sec_ctx.context_id);
+        }
+
+        av_freep(&sec_ctx.context_id);
+
+        for (unsigned i = 0; i < graph->nb_filters; i++) {
+            AVFilterContext *filter = graph->filters[i];
+
+            if (gpc->skip_buffer_filters) {
+                if (av_dict_get(input_map, filter->name, NULL, 0))
+                    continue;
+                if (av_dict_get(output_map, filter->name, NULL, 0))
+                    continue;
+            }
+
+            sec_ctx.context_id = filter->name;
+
+            print_filter(gpc, filter, input_map, output_map);
+        }
+
+        avtext_print_section_footer(tfc); // SECTION_ID_FILTERS
+    }
+
+    // Clean up dictionaries
+    av_dict_free(&input_map);
+    av_dict_free(&output_map);
+}
+
+static int print_streams(GraphPrintContext *gpc, InputFile **ifiles, int nb_ifiles, OutputFile **ofiles, int nb_ofiles)
+{
+    AVTextFormatContext       *tfc = gpc->tfc;
+    AVBPrint                   buf;
+    AVTextFormatSectionContext sec_ctx = { 0 };
+
+    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    print_section_header_id(gpc, SECTION_ID_INPUTFILES, "Inputs", 0);
+
+    for (int n = nb_ifiles - 1; n >= 0; n--) {
+        InputFile *ifi = ifiles[n];
+        AVFormatContext *fc = ifi->ctx;
+
+        sec_ctx.context_id = av_asprintf("Input_%d", n);
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_INPUTFILE);
+        av_freep(&sec_ctx.context_id);
+
+        print_fmt("index", "%d", ifi->index);
+
+        if (fc) {
+            print_str("demuxer_name", fc->iformat->name);
+            if (fc->url) {
+                char *extension = get_extension(fc->url);
+                if (extension) {
+                    print_str("file_extension", extension);
+                    av_freep(&extension);
+                }
+                print_str("url", fc->url);
+            }
+        }
+
+        sec_ctx.context_id = av_asprintf("InputStreams_%d", n);
+
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_INPUTSTREAMS);
+
+        av_freep(&sec_ctx.context_id);
+
+        for (int i = 0; i < ifi->nb_streams; i++) {
+            InputStream *ist = ifi->streams[i];
+            const AVCodecDescriptor *codec_desc;
+
+            if (!ist || !ist->par)
+                continue;
+
+            codec_desc = avcodec_descriptor_get(ist->par->codec_id);
+
+            sec_ctx.context_id = av_asprintf("r_in_%d_%d", n, i);
+
+            sec_ctx.context_type = av_get_media_type_string(ist->par->codec_type);
+
+            avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_INPUTSTREAM);
+            av_freep(&sec_ctx.context_id);
+            sec_ctx.context_type = NULL;
+
+            av_bprint_clear(&buf);
+
+            print_fmt("id", "r_in_%d_%d", n, i);
+
+            if (codec_desc && codec_desc->name) {
+                ////av_bprintf(&buf, "%s", upcase_string(char_buf, sizeof(char_buf), codec_desc->long_name));
+                av_bprintf(&buf, "%s", codec_desc->long_name);
+            } else if (ist->dec) {
+                char char_buf[256];
+                av_bprintf(&buf, "%s", upcase_string(char_buf, sizeof(char_buf), ist->dec->name));
+            } else if (ist->par->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
+                av_bprintf(&buf, "%s", "Attachment");
+            } else if (ist->par->codec_type == AVMEDIA_TYPE_DATA) {
+                av_bprintf(&buf, "%s", "Data");
+            }
+
+            print_fmt("name", "%s", buf.str);
+            print_fmt("index", "%d", ist->index);
+
+            if (ist->dec)
+                print_str_opt("media_type", av_get_media_type_string(ist->par->codec_type));
+
+            avtext_print_section_footer(tfc); // SECTION_ID_INPUTSTREAM
+        }
+
+        avtext_print_section_footer(tfc); // SECTION_ID_INPUTSTREAMS
+        avtext_print_section_footer(tfc); // SECTION_ID_INPUTFILE
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_INPUTFILES
+
+
+    print_section_header_id(gpc, SECTION_ID_DECODERS, "Decoders", 0);
+
+    for (int n = 0; n < nb_ifiles; n++) {
+        InputFile *ifi = ifiles[n];
+
+        for (int i = 0; i < ifi->nb_streams; i++) {
+            InputStream *ist = ifi->streams[i];
+
+            if (!ist->decoder)
+                continue;
+
+            sec_ctx.context_id = av_asprintf("in_%d_%d", n, i);
+            sec_ctx.context_type = av_get_media_type_string(ist->par->codec_type);
+            sec_ctx.context_flags = 2;
+
+            avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_DECODER);
+            av_freep(&sec_ctx.context_id);
+            sec_ctx.context_type = NULL;
+            sec_ctx.context_flags = 0;
+
+            av_bprint_clear(&buf);
+
+            print_fmt("source_id", "r_in_%d_%d", n, i);
+            print_fmt("id", "in_%d_%d", n, i);
+
+            ////av_bprintf(&buf, "%s", upcase_string(char_buf, sizeof(char_buf), ist->dec->name));
+            print_fmt("name", "%s", ist->dec->name);
+
+            print_str_opt("media_type", av_get_media_type_string(ist->par->codec_type));
+
+            avtext_print_section_footer(tfc); // SECTION_ID_DECODER
+        }
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_DECODERS
+
+
+    print_section_header_id(gpc, SECTION_ID_ENCODERS, "Encoders", 0);
+
+    for (int n = 0; n < nb_ofiles; n++) {
+        OutputFile *of = ofiles[n];
+
+        for (int i = 0; i < of->nb_streams; i++) {
+            OutputStream *ost = of->streams[i];
+            ////const AVCodecDescriptor *codec_desc;
+
+            if (!ost || !ost->st || !ost->st->codecpar || !ost->enc)
+                continue;
+
+            ////codec_desc = avcodec_descriptor_get(ost->st->codecpar->codec_id);
+
+            sec_ctx.context_id = av_asprintf("out__%d_%d", n, i);
+            sec_ctx.context_type = av_get_media_type_string(ost->type);
+            sec_ctx.context_flags = 2;
+
+            avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_ENCODER);
+            av_freep(&sec_ctx.context_id);
+            sec_ctx.context_type = NULL;
+            sec_ctx.context_flags = 0;
+
+            av_bprint_clear(&buf);
+
+            print_fmt("id", "out__%d_%d", n, i);
+            print_fmt("dest_id", "r_out__%d_%d", n, i);
+
+            print_fmt("name", "%s", ost->enc->enc_ctx->av_class->item_name(ost->enc->enc_ctx));
+
+            print_str_opt("media_type", av_get_media_type_string(ost->type));
+
+            avtext_print_section_footer(tfc); // SECTION_ID_ENCODER
+        }
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_ENCODERS
+
+
+    print_section_header_id(gpc, SECTION_ID_OUTPUTFILES, "Outputs", 0);
+
+    for (int n = nb_ofiles - 1; n >= 0; n--) {
+        OutputFile *of = ofiles[n];
+        Muxer *muxer = (Muxer *)of;
+
+        if (!muxer->fc)
+            continue;
+
+        sec_ctx.context_id = av_asprintf("Output_%d", n);
+
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_OUTPUTFILE);
+
+        av_freep(&sec_ctx.context_id);
+
+        ////print_str_opt("index", av_get_media_type_string(of->index));
+        print_fmt("index", "%d", of->index);
+        ////print_str("url", of->url);
+        print_str("muxer_name", muxer->fc->oformat->name);
+        if (of->url) {
+            char *extension = get_extension(of->url);
+            if (extension) {
+                print_str("file_extension", extension);
+                av_freep(&extension);
+            }
+            print_str("url", of->url);
+        }
+
+        sec_ctx.context_id = av_asprintf("OutputStreams_%d", n);
+
+        avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_OUTPUTSTREAMS);
+
+        for (int i = 0; i < of->nb_streams; i++) {
+            OutputStream *ost = of->streams[i];
+            const AVCodecDescriptor *codec_desc = avcodec_descriptor_get(ost->st->codecpar->codec_id);
+
+            sec_ctx.context_id = av_asprintf("r_out__%d_%d", n, i);
+            sec_ctx.context_type = av_get_media_type_string(ost->type);
+            avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_OUTPUTSTREAM);
+            av_freep(&sec_ctx.context_id);
+            sec_ctx.context_type = NULL;
+
+            av_bprint_clear(&buf);
+
+            print_fmt("id", "r_out__%d_%d", n, i);
+
+            if (codec_desc && codec_desc->name) {
+                av_bprintf(&buf, "%s", codec_desc->long_name);
+            } else {
+                av_bprintf(&buf, "%s", "unknown");
+            }
+
+            print_fmt("name", "%s", buf.str);
+            print_fmt("index", "%d", ost->index);
+
+            print_str_opt("media_type", av_get_media_type_string(ost->type));
+
+            avtext_print_section_footer(tfc); // SECTION_ID_OUTPUTSTREAM
+        }
+
+        avtext_print_section_footer(tfc); // SECTION_ID_OUTPUTSTREAMS
+        avtext_print_section_footer(tfc); // SECTION_ID_OUTPUTFILE
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_OUTPUTFILES
+
+
+    avtext_print_section_header(tfc, NULL, SECTION_ID_STREAMLINKS);
+
+    for (int n = 0; n < nb_ofiles; n++) {
+        OutputFile *of = ofiles[n];
+
+        for (int i = 0; i < of->nb_streams; i++) {
+            OutputStream *ost = of->streams[i];
+
+            if (ost->ist && !ost->filter) {
+                sec_ctx.context_type = av_get_media_type_string(ost->type);
+                avtext_print_section_header(tfc, &sec_ctx, SECTION_ID_STREAMLINK);
+                sec_ctx.context_type = NULL;
+
+                if (ost->enc) {
+                    print_fmt("dest_stream_id", "out__%d_%d", n, i);
+                    print_fmt("source_stream_id", "in_%d_%d", ost->ist->file->index, ost->ist->index);
+                    print_str("operation", "Transcode");
+                } else {
+                    print_fmt("dest_stream_id", "r_out__%d_%d", n, i);
+                    print_fmt("source_stream_id", "r_in_%d_%d", ost->ist->file->index, ost->ist->index);
+                    print_str("operation", "Stream Copy");
+                }
+
+                print_str_opt("media_type", av_get_media_type_string(ost->type));
+
+                avtext_print_section_footer(tfc); // SECTION_ID_STREAMLINK
+            }
+        }
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_STREAMLINKS
+
+    av_bprint_finalize(&buf, NULL);
+    return 0;
+}
+
+
+static void uninit_graphprint(GraphPrintContext *gpc)
+{
+    if (gpc->tfc)
+        avtext_context_close(&gpc->tfc);
+
+    if (gpc->wctx)
+        avtextwriter_context_close(&gpc->wctx);
+
+    // Finalize the print buffer if it was initialized
+    av_bprint_finalize(&gpc->pbuf, NULL);
+}
+
+static int init_graphprint(GraphPrintContext **pgpc, AVBPrint *target_buf)
+{
+    const AVTextFormatter *text_formatter;
+    AVTextFormatContext *tfc = NULL;
+    AVTextWriterContext *wctx = NULL;
+    GraphPrintContext *gpc = NULL;
+    char *w_args = NULL;
+    char *w_name;
+    int ret;
+
+    init_sections();
+    *pgpc = NULL;
+
+    av_bprint_init(target_buf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    if (!print_graphs_format)
+        print_graphs_format = av_strdup("json");
+    if (!print_graphs_format) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    w_name = av_strtok(print_graphs_format, "=", &w_args);
+    if (!w_name) {
+        av_log(NULL, AV_LOG_ERROR, "No name specified for the filter graph output format\n");
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
+
+    text_formatter = avtext_get_formatter_by_name(w_name);
+    if (!text_formatter) {
+        av_log(NULL, AV_LOG_ERROR, "Unknown filter graph output format with name '%s'\n", w_name);
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
+
+    ret = avtextwriter_create_buffer(&wctx, target_buf);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR, "avtextwriter_create_buffer failed. Error code %d\n", ret);
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
+
+    AVTextFormatOptions tf_options = { .show_optional_fields = -1 };
+    ret = avtext_context_open(&tfc, text_formatter, wctx, w_args, sections, FF_ARRAY_ELEMS(sections), tf_options, NULL);
+    if (ret < 0) {
+        goto fail;
+    }
+
+    gpc = av_mallocz(sizeof(GraphPrintContext));
+    if (!gpc) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    gpc->wctx = wctx;
+    gpc->tfc = tfc;
+    av_bprint_init(&gpc->pbuf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    gpc->id_prefix_num = atomic_fetch_add(&prefix_num, 1);
+    gpc->is_diagram = !!(tfc->formatter->flags & AV_TEXTFORMAT_FLAG_IS_DIAGRAM_FORMATTER);
+    if (gpc->is_diagram) {
+        tfc->show_value_unit = 1;
+        tfc->show_optional_fields = -1;
+        gpc->opt_flags = AV_TEXTFORMAT_PRINT_STRING_OPTIONAL;
+        gpc->skip_buffer_filters = 1;
+        ////} else {
+        ////    gpc->opt_flags = AV_TEXTFORMAT_PRINT_STRING_OPTIONAL;
+    }
+
+    if (!strcmp(text_formatter->name, "mermaid") || !strcmp(text_formatter->name, "mermaidhtml")) {
+        gpc->diagram_config.diagram_css = ff_resman_get_string(FF_RESOURCE_GRAPH_CSS);
+
+        if (!strcmp(text_formatter->name, "mermaidhtml"))
+            gpc->diagram_config.html_template = ff_resman_get_string(FF_RESOURCE_GRAPH_HTML);
+
+        av_diagram_init(tfc, &gpc->diagram_config);
+    }
+
+    *pgpc = gpc;
+
+    return 0;
+
+fail:
+    if (tfc)
+        avtext_context_close(&tfc);
+    if (wctx && !tfc) // Only free wctx if tfc didn't take ownership of it
+        avtextwriter_context_close(&wctx);
+    av_freep(&gpc);
+
+    return ret;
+}
+
+
+int print_filtergraph(FilterGraph *fg, AVFilterGraph *graph)
+{
+    GraphPrintContext *gpc = NULL;
+    AVTextFormatContext *tfc;
+    FilterGraphPriv *fgp = fgp_from_fg(fg);
+    AVBPrint *target_buf = &fgp->graph_print_buf;
+    int ret;
+
+    if (!fg || !fgp) {
+        av_log(NULL, AV_LOG_ERROR, "Invalid filter graph provided\n");
+        return AVERROR(EINVAL);
+    }
+
+    if (target_buf->len)
+        av_bprint_finalize(target_buf, NULL);
+
+    ret = init_graphprint(&gpc, target_buf);
+    if (ret)
+        return ret;
+
+    if (!gpc) {
+        av_log(NULL, AV_LOG_ERROR, "Failed to initialize graph print context\n");
+        return AVERROR(ENOMEM);
+    }
+
+    tfc = gpc->tfc;
+
+    // Due to the threading model each graph needs to print itself into a buffer
+    // from its own thread. The actual printing happens short before cleanup in ffmpeg.c
+    // where all graphs are assembled together. To make this work, we need to put the
+    // formatting context into the same state like it would be when printing all at once,
+    // so here we print the section headers and clear the buffer to get into the right state.
+    avtext_print_section_header(tfc, NULL, SECTION_ID_ROOT);
+    avtext_print_section_header(tfc, NULL, SECTION_ID_FILTERGRAPHS);
+    avtext_print_section_header(tfc, NULL, SECTION_ID_FILTERGRAPH);
+
+    av_bprint_clear(target_buf);
+
+    print_filtergraph_single(gpc, fg, graph);
+
+    if (gpc->is_diagram) {
+        avtext_print_section_footer(tfc); // SECTION_ID_FILTERGRAPH
+        avtext_print_section_footer(tfc); // SECTION_ID_FILTERGRAPHS
+    }
+
+    uninit_graphprint(gpc);
+
+    return 0;
+}
+
+static int print_filtergraphs_priv(FilterGraph **graphs, int nb_graphs, InputFile **ifiles, int nb_ifiles, OutputFile **ofiles, int nb_ofiles)
+{
+    GraphPrintContext *gpc = NULL;
+    AVTextFormatContext *tfc;
+    AVBPrint target_buf;
+    int ret;
+
+    ret = init_graphprint(&gpc, &target_buf);
+    if (ret)
+        goto cleanup;
+
+    if (!gpc) {
+        ret = AVERROR(ENOMEM);
+        goto cleanup;
+    }
+
+    tfc = gpc->tfc;
+
+    avtext_print_section_header(tfc, NULL, SECTION_ID_ROOT);
+    avtext_print_section_header(tfc, NULL, SECTION_ID_FILTERGRAPHS);
+
+    for (int i = 0; i < nb_graphs; i++) {
+        FilterGraphPriv *fgp = fgp_from_fg(graphs[i]);
+        AVBPrint *graph_buf = &fgp->graph_print_buf;
+
+        if (graph_buf->len > 0) {
+            avtext_print_section_header(tfc, NULL, SECTION_ID_FILTERGRAPH);
+            av_bprint_append_data(&target_buf, graph_buf->str, graph_buf->len);
+            av_bprint_finalize(graph_buf, NULL);
+            avtext_print_section_footer(tfc); // SECTION_ID_FILTERGRAPH
+        }
+    }
+
+    for (int n = 0; n < nb_ofiles; n++) {
+        OutputFile *of = ofiles[n];
+
+        for (int i = 0; i < of->nb_streams; i++) {
+            OutputStream *ost = of->streams[i];
+
+            if (ost->fg_simple) {
+                FilterGraphPriv *fgp = fgp_from_fg(ost->fg_simple);
+                AVBPrint *graph_buf = &fgp->graph_print_buf;
+
+                if (graph_buf->len > 0) {
+                    avtext_print_section_header(tfc, NULL, SECTION_ID_FILTERGRAPH);
+                    av_bprint_append_data(&target_buf, graph_buf->str, graph_buf->len);
+                    av_bprint_finalize(graph_buf, NULL);
+                    avtext_print_section_footer(tfc); // SECTION_ID_FILTERGRAPH
+                }
+            }
+        }
+    }
+
+    avtext_print_section_footer(tfc); // SECTION_ID_FILTERGRAPHS
+
+    print_streams(gpc, ifiles, nb_ifiles, ofiles, nb_ofiles);
+
+    avtext_print_section_footer(tfc); // SECTION_ID_ROOT
+
+    if (print_graphs_file) {
+        AVIOContext *avio = NULL;
+
+        if (!strcmp(print_graphs_file, "-")) {
+            printf("%s", target_buf.str);
+        } else {
+            ret = avio_open2(&avio, print_graphs_file, AVIO_FLAG_WRITE, NULL, NULL);
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Failed to open graph output file, \"%s\": %s\n", print_graphs_file, av_err2str(ret));
+                goto cleanup;
+            }
+
+            avio_write(avio, (const unsigned char *)target_buf.str, FFMIN(target_buf.len, target_buf.size - 1));
+            avio_flush(avio);
+
+            if ((ret = avio_closep(&avio)) < 0)
+                av_log(NULL, AV_LOG_ERROR, "Error closing graph output file, loss of information possible: %s\n", av_err2str(ret));
+        }
+    }
+
+    if (print_graphs)
+        av_log(NULL, AV_LOG_INFO, "%s    %c", target_buf.str, '\n');
+
+cleanup:
+    // Properly clean up resources
+    if (gpc)
+        uninit_graphprint(gpc);
+
+    // Ensure the target buffer is properly finalized
+    av_bprint_finalize(&target_buf, NULL);
+
+    return ret;
+}
+
+int print_filtergraphs(FilterGraph **graphs, int nb_graphs, InputFile **ifiles, int nb_ifiles, OutputFile **ofiles, int nb_ofiles)
+{
+    return print_filtergraphs_priv(graphs, nb_graphs, ifiles, nb_ifiles, ofiles, nb_ofiles);
+}