[FFmpeg-trac] #1624(avfilter:open): add waveform filter for video

[FFmpeg]

#1624: add waveform filter for video
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             Reporter:  dericed      |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by richardpl):

 Ignore, I found far more useful explanation here
 http://documentation.apple.com/en/color/usermanual/index.html#chapter=8%26section=3%26tasks=true

 Some stuff is done slightly different and some others are missing.
 I will work on missing stuff and than close this bug.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1624#comment:3>
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