Commit 986faf44ea for ffmpeg

commit 986faf44eaa3c83c483a69654565489c48bd9719
Author: Tom Needham <06needhamt@gmail.com>
Date:   Fri Sep 11 18:58:07 2026 +0000

    libavformat/demux: Don't treat IMM6 as one_in one_out

    Exclude IMM6 from one-in/one-out timestamp inference so AVI probing
    does not assign PTS from DTS before the H.264 reordering delay is known.

    Signed-off-by: Tom Needham <06needhamt@gmail.com>

diff --git a/libavformat/demux.c b/libavformat/demux.c
index cfab580fb6..06c4331807 100644
--- a/libavformat/demux.c
+++ b/libavformat/demux.c
@@ -1015,7 +1015,8 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
     AVRational duration;
     int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
                        st->codecpar->codec_id != AV_CODEC_ID_HEVC &&
-                       st->codecpar->codec_id != AV_CODEC_ID_VVC;
+                       st->codecpar->codec_id != AV_CODEC_ID_VVC  &&
+                       st->codecpar->codec_id != AV_CODEC_ID_IMM6;

     if (s->flags & AVFMT_FLAG_NOFILLIN)
         return;
diff --git a/tests/ref/fate/imm6 b/tests/ref/fate/imm6
index 2ef212940f..a8c6117766 100644
--- a/tests/ref/fate/imm6
+++ b/tests/ref/fate/imm6
@@ -3,7 +3,7 @@
 #codec_id 0: rawvideo
 #dimensions 0: 1280x720
 #sar 0: 81/256
-0,          0,          0,        1,  2764800, 0xe57aa7a6
+0,          2,          2,        1,  2764800, 0xe57aa7a6
 0,          3,          3,        1,  2764800, 0x57504f30
 0,          4,          4,        1,  2764800, 0x068318f9
 0,          5,          5,        1,  2764800, 0x6d4ae138