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MOV: fix crash when 'meta' occurs before first 'trak'

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Originally committed as revision 17781 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Converse 2009-03-03 18:19:44 +00:00
parent bc8763cda9
commit fefe43ff2c
1 changed files with 6 additions and 1 deletions
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7
libavformat/mov.c
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@ -308,10 +308,15 @@ static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom) static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
{ {
AVStream *st = c->fc->streams[c->fc->nb_streams-1]; AVStream *st;
uint32_t type; uint32_t type;
uint32_t ctype; uint32_t ctype;
if (c->fc->nb_streams < 1) // meta before first trak
return 0;
st = c->fc->streams[c->fc->nb_streams-1];
get_byte(pb); /* version */ get_byte(pb); /* version */
get_be24(pb); /* flags */ get_be24(pb); /* flags */