[FFmpeg-trac] #9693(swscale:new): change of matrix cannot happen on full range

[FFmpeg]

#9693: change of matrix cannot happen on full range
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             Reporter:  Balling     |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  important   |                Component:  swscale
              Version:  git-master  |               Resolution:
             Keywords:  zscale      |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Comment (by Balling):

 And BTW you need -vf zscale=min=709:m=170m:cin=left:c=center or just -vf
 zscale=min=709:m=170m:c=center or it will not be perfect.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9693#comment:6>
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