Commit 8b7e5d278c for ffmpeg

commit 8b7e5d278c3e0008de31b61f6d50893260967755
Author: zhang xingxing <2388969553@qq.com>
Date:   Thu Oct 15 04:01:57 2026 +0200

    avformat/idroqdec: skip the whole body of a repeated RoQ_INFO chunk

    The RoQ player in the Quake III Arena source (code/client/cl_cin.c) also
    continues after the declared size of every RoQ_INFO chunk.

    Fixes: yyLBi9GsHV9w
    Fixes: swarm-RoQ_INFO-re-entry-skips-fixed-size-ignoring-chunk_size-e7709a
    Stream desynchronization Replicated through UnModified FFmpeg

    Found-by: zhang xingxing <2388969553@qq.com>
    Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

diff --git a/libavformat/idroqdec.c b/libavformat/idroqdec.c
index 861338ceec..76d96196ba 100644
--- a/libavformat/idroqdec.c
+++ b/libavformat/idroqdec.c
@@ -142,7 +142,7 @@ static int roq_read_packet(AVFormatContext *s,
                 break;
             }
             /* don't care about this chunk anymore */
-            avio_skip(pb, RoQ_CHUNK_PREAMBLE_SIZE);
+            avio_skip(pb, chunk_size);
             break;

         case RoQ_QUAD_CODEBOOK: