[FFmpeg-trac] #8063(undetermined:closed): `-vsync cfr` tends to duplicate the wrong frames

[FFmpeg]

#8063: `-vsync cfr` tends to duplicate the wrong frames
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             Reporter:  gdgsdg123    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
                                     |  needs_more_info
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by gdgsdg123):

 Replying to [ticket:8063 gdgsdg123]:
 > ...failed to reproduce (seemed working correctly) in AVI container.
 Managed to reproduce it in AVI container:
 {{{
 ffmpeg -i "123.avi" -vsync cfr "cfr.avi"
 }}}
 [[BR]]
 [[BR]]
 Frame information of
 [http://trac.ffmpeg.org/attachment/ticket/8063/123.avi 123.avi]:
 ||= Frame Number =||= Presentation Timestamp =||= Duration =||= Content
 =||
 || 1|| 0|| 2||  1  ||
 || 2|| 2|| 2||  2  ||
 || 3|| 4|| N/A||  3  ||
 [[BR]]
 Expected frame information of cfr.avi:
 ||= Frame Number =||= Presentation Timestamp =||= Duration =||= Content
 =||
 || 1|| 0|| 1||  1  ||
 || 2|| 1|| 1||  2  ||
 || 3|| 2|| 1||  2  ||
 || 4|| 3|| 1||  3  ||
 || 5|| 4|| N/A||  3  ||

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Ticket URL: <https://trac.ffmpeg.org/ticket/8063#comment:2>
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