[FFmpeg-trac] #1035(FFplay:new): ffplay: after changing audio stream, audio video become out of sync
FFmpeg
trac at avcodec.org
Tue Mar 13 04:28:28 CET 2012
#1035: ffplay: after changing audio stream, audio video become out of sync
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Reporter: rlf | Owner:
Type: defect | Status: new
Priority: minor | Component: FFplay
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by rlf):
I confirm that after setting AV_NOSYNC_THRESHOLD 60.0, the problem goes
away.
But I don't understand why 10 seconds is not big enough. In my case, the
sample is a Karaoke MTV. All audio streams in it is strictly sync-ed to
the video stream. A-V will be sync-ed no matter which which audio stream
is selected by command line such as:
$ ffplay -ast 1 sample.mpg
$ ffpaly -ast 2 sample.mpg
but A-V will not be sync-ed after pressing 'a' during the playback
process.
I put the sample [ftp://115.236.58.114/sample/ktv/qingwang.mpg here].
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1035#comment:5>
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