From 8949be0086643644f32859940e0a8eb37d56eac6 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Date: Tue, 16 Feb 2021 18:32:23 +0100
Subject: [PATCH] avformat/matroskaenc: Add support for FlagCommentary

Reviewed-by: Ridley Combs <rcombs@rcombs.me>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
---
 libavformat/matroskaenc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 6c8c7130c0..c77f0a332b 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -1191,6 +1191,8 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
 
         put_ebml_string(pb, MATROSKA_ID_CODECID, codec_id);
     } else {
+        if (st->disposition & AV_DISPOSITION_COMMENT)
+            put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGCOMMENTARY, 1);
         // look for a codec ID string specific to mkv to use,
         // if none are found, use AVI codes
         if (par->codec_id != AV_CODEC_ID_RAWVIDEO || par->codec_tag) {