[FFmpeg-trac] #2975(undetermined:new): h264 streams don't start with timestamp/timecode 0 when muxed with Matroska

[FFmpeg]

#2975: h264 streams don't start with timestamp/timecode 0 when muxed with Matroska
-------------------------------------+-------------------------------------
             Reporter:  jamal        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  h264 mkv     |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by ValdikSS):

 matroskaenc.c sets avoid_negative_ts=1 by default. You can execute:
 {{{
 ffmpeg -f lavfi -i testsrc -t 10 -c:v libx264 -preset veryfast
 -avoid_negative_ts 0 test.mkv
 }}}
 and you'll get a videofile with 00:00:10.000 duration instead of
 00:00:10.080.
 It seems like mkv muxer bug, because all other containers muxes exactly
 00:00:10.000 with -avoid_negative_ts 1.

 And in my case, -f segment forces -avoid_negative_segment 1 so there is
 +80ms delay in every splitted file.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2975#comment:13>
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