[FFmpeg-trac] #6810(avformat:new): Wrong DTS guess when PTS is reordered for the input without DTS (wrong 'Non-monotonous DTS' fixup)

[FFmpeg]

#6810: Wrong DTS guess when PTS is reordered for the input without DTS (wrong
'Non-monotonous DTS' fixup)
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             Reporter:  perexg      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mkv dts     |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by perexg):

 > You mean this is a duplicate of another ticket?

 It may be similar to #3572, #3621 and probably others - it's difficult to
 find all.

 > Please provide the command line you tested together with the complete,
 uncut console output and an input sample that allows to reproduce.

 Command line: ffmpeg -y -loglevel trace -debug_ts -fdebug ts -i a.mkv -c:v
 copy -c:a copy /tmp/a.mkv

 demuxer+ffmpeg -> ist_index:0 type:video pkt_pts:2980 pkt_pts_time:2.98
 pkt_dts:2980
 muxer <- type:video pkt_pts:2980 pkt_pts_time:2.98 pkt_dts:2980
 pkt_dts_time:2.98
 demuxer+ffmpeg -> ist_index:0 type:video pkt_pts:2920 pkt_pts_time:2.92
 pkt_dts:2920
 muxer <- type:video pkt_pts:2980 pkt_pts_time:2.98 pkt_dts:2980
 pkt_dts_time:2.98
 demuxer+ffmpeg -> ist_index:0 type:video pkt_pts:2940 pkt_pts_time:2.94
 pkt_dts:2940
 muxer <- type:video pkt_pts:2980 pkt_pts_time:2.98 pkt_dts:2980
 pkt_dts_time:2.98

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Ticket URL: <https://trac.ffmpeg.org/ticket/6810#comment:2>
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