[FFmpeg-trac] #11182(swscale:closed): yuvtestsrc and yuv444p->rgba->yuv444p conversion result in huge difference

[FFmpeg]

#11182: yuvtestsrc and yuv444p->rgba->yuv444p conversion result in huge difference
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             Reporter:  Andrew-R     |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  swscale
              Version:  unspecified  |               Resolution:  invalid
             Keywords:  colorspace   |               Blocked By:
  color_primaries                    |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 >220 * 225 * 225?

 LOL, no. All values are allowed, besides (for 8 bit) 0 and 255. 0 and 255
 values are used in limited range RGB and limited range YCbCr for sync in
 HDMI and Display Port. So that means 250, 128, 128 would be more white
 than 100% white. That is called Superwhite.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11182#comment:15>
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