From 8262848178ddd1136c9732203252e5cdb691e50d Mon Sep 17 00:00:00 2001
From: conrad <conrad@9553f0bf-9b14-0410-a0b8-cfaf0461ba5b>
Date: Sat, 17 Jan 2009 04:31:14 +0000
Subject: [PATCH] Treat disposition==0 as undefined and don't write the default
 flag

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@16651 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b
---
 libavformat/matroskaenc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 59016cab9..368c35156 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -560,6 +560,7 @@ static int mkv_write_tracks(AVFormatContext *s)
         else
             put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, "und");
 
+        if (st->disposition)
         put_ebml_uint(pb, MATROSKA_ID_TRACKFLAGDEFAULT, !!(st->disposition & AV_DISPOSITION_DEFAULT));
 
         // look for a codec ID string specific to mkv to use,
-- 
2.39.2