[FFmpeg-trac] #5784(avformat:new): Regression: mkv encoder DTS discontinuity

[FFmpeg]

#5784: Regression: mkv encoder DTS discontinuity
-------------------------------------+-------------------------------------
             Reporter:  mbat         |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avformat     |                  Version:  git-
             Keywords:  mkv          |  master
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:

 Download sample from here:
 https://www.datafilehost.com/d/v5QV9Y2BBg

 Input file has no errors. Frames are every 40ms (25fps).
 DTS progression is linear: 0 - 40 - 80 - 120 - 160 - 200 - 240 - ...

 Run this command line:
 {{{
 ffmpeg -i test.mp4 -c copy test.mkv
 }}}

 Output file has DTS discontinuities at 0, 141 and 160ms.
 DTS progression is: 0 - 61 - 101 - 141 - 160 - 221 - ...

 DTS timings are in milliseconds.

 My test configuration was Windows 7 64 bit.
 I'm using Zeranoe build of 2016-08-17 (bba6a03).

 Zeranoe build of 2015-02-03 has no issues.

 Thanks,
 MB

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Ticket URL: <https://trac.ffmpeg.org/ticket/5784>
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