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astdec: improve probing 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2012-11-27 10:12:28 +00:00
parent 13c6252536
commit 10c8f91341
1 changed files with 5 additions and 2 deletions
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7
libavformat/ast.c
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@ -26,8 +26,11 @@
static int ast_probe(AVProbeData *p)
{
if (AV_RL32(p->buf) == MKTAG('S', 'T', 'R', 'M'))
return AVPROBE_SCORE_MAX / 2;
if (AV_RL32(p->buf) == MKTAG('S','T','R','M') &&
AV_RB16(p->buf + 10) &&
AV_RB16(p->buf + 12) &&
AV_RB32(p->buf + 16))
return AVPROBE_SCORE_MAX / 3 * 2;
return 0;
}