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avformat/m4vdec: Detect raw mpeg4video with unidentified non mpeg headers with a very low score 

Fixes Ticket 6018

This fixes a regression, and allows playback of files containing mpeg4video that are otherwise
not supported

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-02-18 03:31:14 +01:00
parent 965f35b111
commit 6baee21eb7
1 changed files with 3 additions and 0 deletions
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3
libavformat/m4vdec.c
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@ -53,6 +53,9 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
if (VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res == 0)
return VOP+VO > 4 ? AVPROBE_SCORE_EXTENSION : AVPROBE_SCORE_EXTENSION/2;
if (VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && VOP+VO > 4)
return AVPROBE_SCORE_EXTENSION/10;
return 0;
}