[FFmpeg-trac] #5931(avfilter:open): showwavespic, showspectrumpic innacurate length of resulting image

[FFmpeg]

#5931: showwavespic, showspectrumpic innacurate length of resulting image
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             Reporter:  jonata        |                    Owner:
                 Type:  defect        |                   Status:  open
             Priority:  minor         |                Component:  avfilter
              Version:  git-master    |               Resolution:
             Keywords:  showwavespic  |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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Comment (by Ruuttu):

 It appears the shorter your audio is, the bigger the gap can get.
 Rendering a one second WAV into a 1000px wide image leaves 20 pixels empty
 on the right. This is not a trivial amount of error. I'll try upload a
 simple test case.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5931#comment:2>
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