[FFmpeg-trac] #10475(undetermined:new): Second frame in two-frame apng plays too fast when converted to webm

[FFmpeg]

#10475: Second frame in two-frame apng plays too fast when converted to webm
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             Reporter:  beresnev.nh  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  apng         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Summary of the bug:

 I am trying to convert 2-frame apng to webm. Second frame plays too fast
 (see attached files). 3-frame apng plays fine.

 How to reproduce:

 `ffmpeg -stream_loop 10 -i in_2_frames.png /tmp/out_2_frames.webm`

 `ffmpeg -stream_loop 10 -i in_3_frames.png /tmp/out_3_frames.webm`
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Ticket URL: <https://trac.ffmpeg.org/ticket/10475>
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