[FFmpeg-trac] #3859(undetermined:new): mp4: start_time never zero
FFmpeg
trac at avcodec.org
Fri Sep 19 19:51:56 CEST 2014
#3859: mp4: start_time never zero
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Reporter: blacktrash | 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 blacktrash):
Replying to [comment:10 cehoyos]:
> I still don't understand how I can reproduce the problem: Is there an
input sample and command line for which I can reproduce A/V desync or is
this ticket only about a warning that a third-party tool shows?
1. You get a negative start_time with ffprobe for format and audio stream
2. With the segment muxer the first segment always exceeds segment
duration (in spite of forced key frames etc.)
3. asetpts=PTS-STARTPTS does not make the audio start at 0 as it's
supposed to do
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Ticket URL: <https://trac.ffmpeg.org/ticket/3859#comment:12>
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