[FFmpeg-trac] #383(undetermined:new): ffmpeg SCR moves backwards in output muxed mpeg file

FFmpeg trac at avcodec.org
Sat Aug 13 16:48:15 CEST 2011


#383: ffmpeg SCR moves backwards in output muxed mpeg file
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Reporter:  johnnyquid                 |       Owner:
    Type:  defect                     |      Status:  new
Priority:  normal                     |   Component:  undetermined
 Version:  unspecified                |  Resolution:
Keywords:  ffmpeg mpeg scr backwards  |  Blocked By:
Blocking:                             |  Reproduced:  0
Analyzed:  0                          |
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Comment (by wg):

 The issue is actually not with backward-moving scr but with negative or
 "wrapping" scr.  Of course ffmpeg should not generate negative timestamps
 in mpeg output.  But there is an easy workaround:  Use "-muxpreload 0.775"
 to compensate for your negative -itsoffset.  You will lose some packets
 due to buffer underflow but that is simply due to them being too much out
 of sync video vs. audio.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/383#comment:1>
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