[FFmpeg-trac] #1678(undetermined:new): Regression with -vsync 1
FFmpeg
trac at avcodec.org
Sat Aug 25 15:56:53 CEST 2012
#1678: Regression with -vsync 1
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Reporter: jwjwjw | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by jwjwjw):
I don't think it is an issue with vlc. I don't have MPlayer but I also see
the problem using ffplay.
I am recording a longer clip now. But even with the previously provided
clip, converting it to an image sequence shows the problem:
ffmpeg -i bbc1-fail.mov badjpg/video%d.jpg
ffmpeg -i bbc1-ok.mov goodjpg/video%d.jpg
Despite having identical frame rates and audio, the scene changes from the
track to the man in vision at video402.jpg in the 'fail' clip and
video400.jpg in the 'ok' clip. Do you see that too, and if so, isn't that
confirmation of the bug as it's changing 2 frames later in the failed clip
so the sync is out by 2 frames?
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1678#comment:3>
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