No audio stream is created unconditionally and if none has been created,
no packet with stream_index 1 may be returned. This fixes an assert in
ff_read_packet() in libavformat/utils reported in ticket #8782.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
libavformat/mm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavformat/mm.c b/libavformat/mm.c
index d40fd12acc..02ffbcd824 100644
--- a/libavformat/mm.c
+++ b/libavformat/mm.c
@@ -175,6 +175,8 @@ static int read_packet(AVFormatContext *s,
return 0;
case MM_TYPE_AUDIO :
+ if (s->nb_streams < 2)
+ return AVERROR_INVALIDDATA;
if ((ret = av_get_packet(s->pb, pkt, length)) < 0)
return ret;
pkt->stream_index = 1;
--
2.20.1
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