[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):

 You did not read until comment #28 on doom9, it starts talking about
 xvYCC.

 >Not sure how specific figure in YUView should look for invalid colors
 after such roundtrip

 Depends what algoritm it uses to clip YCbCr out-of-gamut values. Typically
 you need to use LittleCMS to see how to clip YCbCr color in xvYCC to
 closest value representative in RGB. But you can enable zoom box in Yuview
 and you will see actual values.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11182#comment:37>
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