st may be NULL when there are more mov streams than AVStreams, e.g. when
chapters are present.
---
libavformat/movenc.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 88239c5..b79bbe8 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -1217,7 +1217,7 @@ static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack
*track, AVStream *st)
avio_wb32(pb, 0); /* reserved */
avio_wb32(pb, 0); /* reserved */
avio_wb16(pb, 0); /* layer */
- avio_wb16(pb, st->codec->codec_type); /* alternate group) */
+ avio_wb16(pb, st ? st->codec->codec_type : 0); /* alternate group) */
/* Volume, only for audio */
if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
avio_wb16(pb, 0x0100);
--
1.7.6
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