[FFmpeg-trac] #11281(avfilter:new): "showwavespic" failed for "Too few samples"?

[FFmpeg]

#11281: "showwavespic" failed for "Too few samples"?
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             Reporter:  Danny        |                    Owner:  (none)
  Weijermans                         |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
  showwavespic                       |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Danny Weijermans):

 a new insight:
 when using smaller widths, the wavesample picture gets truncated at the
 right sight
 (or: the wavesample data is not comlete)
 uploaded 3 new files:
 FL.wav : a short wav file with a recognizable waveform
 FLright.png : how FL.wav should look (in 'Snapper')
 FLffmpeg.png: how FL.wav looks in ffmpeg showwavespic using for example:
 ffmpeg -i /Users/disjt/Desktop/FL.wav -filter_complex
 "showwavespic=s=500x120" -frames:v 1 FL.png
 can you replicate this?
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Ticket URL: <https://trac.ffmpeg.org/ticket/11281#comment:13>
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