[FFmpeg-trac] #1925(undetermined:closed): Transcoding mjpeg video results in a very short frame

[FFmpeg]

#1925: Transcoding mjpeg video results in a very short frame
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             Reporter:  mbradshaw    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:  duplicate
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by rogerdpack):

 Also reproducible like this:

 {{{
 ffmpeg -f lavfi -i testsrc=duration=3:size=1280x720:rate=1 -r 27 -y
 out.mp4
 }}}

 (the frame with number 0 is displayed too quickly in the resultant file).
 -vf fps does seem to work around the problem.  I'm not sure if if vfr is
 "in play" in this case (is #1578 only about vfr?)

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1925#comment:5>
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