avformat/mm: Check for existence of audio stream

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.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-07-09 12:07:28 +02:00
parent 79e8d17024
commit ec59dc73f0
1 changed files with 2 additions and 0 deletions

View File

@ -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;