[FFmpeg-trac] #1624(undetermined:new): add waveform filter for video

[FFmpeg]

#1624: add waveform filter for video
-------------------------------------+-------------------------------------
             Reporter:  dericed      |                     Type:
               Status:  new          |  enhancement
            Component:               |                 Priority:  wish
  undetermined                       |                  Version:  git-
             Keywords:  avfilter     |  master
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------
 For video inspection it could be helpful to have a waveform filter for
 video. I can replicate this by using yuvdiag
 (http://www.silicontrip.net/~mark/lavtools/yuvdiag.c) with mjpegtools and
 running:

 {{{
 ffmpeg -f lavfi -i mandelbrot -pix_fmt yuv420p -f yuv4mpegpipe - |
 ./yuvdiag -l | ffplay -i -
 }}}

 I'd recommend allowing options to select Y, U, and/or V individually to
 show either overlaid or in parade mode.

 I uploaded an output of the above command here:
 www.youtube.com/watch?v=HXbLNbT8NRQ

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