Commit 40f2812185 for ffmpeg

commit 40f28121859981fef7af9556fbaaef4087bb9a4f
Author: ykisana <ykisana@protonmail.com>
Date:   Wed Oct 14 10:24:36 2026 -0600

    avformat/mxfenc: write the actual FFV1 version in the FFV1 sub-descriptor

    Fixes issue due to MXF muxer writing FFV1Version by copying byte 14 of the FFV1 codec label.
    This caused incorrect version numbers, it would increase by one, so 3 became 4.
    Now we save the real version in sc->version.

diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index fd303ac750..867a4abd4d 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -118,6 +118,7 @@ typedef struct MXFStreamContext {
     int max_gop;             ///< maximum gop size, used by mpeg-2 descriptor
     int b_picture_count;     ///< maximum number of consecutive b pictures, used in mpeg-2 descriptor
     int low_delay;           ///< low delay, used in mpeg-2 descriptor
+    int version;             ///< format version, used in ffv1 descriptor
     int micro_version;       ///< format micro_version, used in ffv1 descriptor
     j2k_info_t j2k_info;
     enum MXFMetadataSetType sub_descriptor;
@@ -1633,7 +1634,7 @@ static void mxf_write_ffv1_subdesc(AVFormatContext *s, AVStream *st)
     }

     mxf_write_local_tag(s, 2, 0xDFDA);
-    avio_wb16(pb, (*sc->codec_ul)[14]); // FFV1Version
+    avio_wb16(pb, sc->version); // FFV1Version

     if (st->codecpar->extradata_size) {
         mxf_write_local_tag(s, 2, 0xDFD9);
@@ -2690,6 +2691,7 @@ static int mxf_parse_ffv1_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
         if (v >= 2)
             return 0;
     }
+    sc->version = v;
     sc->codec_ul = &mxf_ffv1_codec_uls[v];
     sc->sub_descriptor = FFV1SubDescriptor;

diff --git a/tests/ref/lavf/mxf_ffv1 b/tests/ref/lavf/mxf_ffv1
index b89e6a214e..4ae93b2e89 100644
--- a/tests/ref/lavf/mxf_ffv1
+++ b/tests/ref/lavf/mxf_ffv1
@@ -1,3 +1,3 @@
-0426b93bbf06aedf083f00cd4ebaf36f *tests/data/lavf/lavf.mxf_ffv1
+67638015788bb7dfcc1c16183967b513 *tests/data/lavf/lavf.mxf_ffv1
 5587001 tests/data/lavf/lavf.mxf_ffv1
 tests/data/lavf/lavf.mxf_ffv1 CRC=0x02354cdc