[FFmpeg-trac] #4138(undetermined:new): Lavfilter output cyclically the same frame when using trim filter with pipe

[FFmpeg]

#4138: Lavfilter output cyclically the same frame when using trim filter with pipe
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             Reporter:  olderz       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  trim         |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 The output of the following two commands looks very different on playback:
 {{{
 $ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov -map 0:0 -qscale
 2 -vf trim=start_frame=500 out.avi
 $ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov -map 0:0 -qscale
 2 -vf trim=start_frame=500 out.mkv
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/4138#comment:7>
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