[FFmpeg-trac] #3625(swscale:new): Unscaled conversion from yuv420p to gray is slow

[FFmpeg]

#3625: Unscaled conversion from yuv420p to gray is slow
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             Reporter:  andreasg    |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  swscale
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by cehoyos):

 The filter is called extractplanes.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3625#comment:6>
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