PR #23819 opened by mkver
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23819
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23819.patch

This reverts commit 58d39e99e26d1116f43a67d66ecfe71dba316875.
Superseded by the generic recursion limit introduced
in 597036b692b8c39198fe572aad027eeb4c13da35.

Signed-off-by: Andreas Rheinhardt <[email protected]>


>From 57c03743a999055aad69e72966a444e278ce5bf1 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <[email protected]>
Date: Wed, 15 Jul 2026 16:14:02 +0200
Subject: [PATCH] Revert "avformat/concatdec: Check recursion depth"

This reverts commit 58d39e99e26d1116f43a67d66ecfe71dba316875.
Superseded by the generic recursion limit introduced
in 597036b692b8c39198fe572aad027eeb4c13da35.

Signed-off-by: Andreas Rheinhardt <[email protected]>
---
 libavformat/concatdec.c | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/libavformat/concatdec.c b/libavformat/concatdec.c
index 665b4e3e66..c57d1b649a 100644
--- a/libavformat/concatdec.c
+++ b/libavformat/concatdec.c
@@ -73,7 +73,6 @@ typedef struct {
     ConcatMatchMode stream_match_mode;
     unsigned auto_convert;
     int segment_time_metadata;
-    int recursion_depth;
 } ConcatContext;
 
 static int concat_probe(const AVProbeData *probe)
@@ -358,12 +357,6 @@ static int open_file(AVFormatContext *avf, unsigned fileno)
     if (ret < 0)
         return ret;
 
-    ret = av_dict_set_int(&options, "recursion_depth", cat->recursion_depth - 
1, 0);
-    if (ret < 0) {
-        av_dict_free(&options);
-        return ret;
-    }
-
     if ((ret = avformat_open_input(&cat->avf, file->url, NULL, &options)) < 0 
||
         (ret = avformat_find_stream_info(cat->avf, NULL)) < 0) {
         av_log(avf, AV_LOG_ERROR, "Impossible to open '%s'\n", file->url);
@@ -371,7 +364,6 @@ static int open_file(AVFormatContext *avf, unsigned fileno)
         avformat_close_input(&cat->avf);
         return ret;
     }
-    av_dict_set(&options, "recursion_depth", NULL, 0);
     if (options) {
         av_log(avf, AV_LOG_WARNING, "Unused options for '%s'.\n", file->url);
         /* TODO log unused options once we have a proper string API */
@@ -673,11 +665,6 @@ static int concat_read_header(AVFormatContext *avf)
     unsigned i;
     int ret;
 
-    if (cat->recursion_depth <= 0) {
-        av_log(avf, AV_LOG_ERROR, "Too deep recursion\n");
-        return AVERROR_INVALIDDATA;
-    }
-
     ret = concat_parse_script(avf);
     if (ret < 0)
         return ret;
@@ -953,8 +940,6 @@ static const AVOption options[] = {
       OFFSET(auto_convert), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DEC },
     { "segment_time_metadata", "output file segment start time and duration as 
packet metadata",
       OFFSET(segment_time_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC },
-    { "recursion_depth", "max recursion depth",
-      OFFSET(recursion_depth), AV_OPT_TYPE_INT, {.i64 = 10}, 0, INT_MAX, DEC },
     { NULL }
 };
 
-- 
2.52.0

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