[FFmpeg-trac] #7978(undetermined:reopened): inaccurate conversion from YCbCr Narrow range to RGB Full range

[FFmpeg]

#7978: inaccurate conversion from YCbCr Narrow range to RGB Full range
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             Reporter:  cepesh       |                    Owner:  (none)
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Pierre-Anthony Lemieux):

 Possibly related.

 (1) create 16-bit PNG filled with peak white

 `convert -size 3840x2160 xc:white png48:white.png`

 (2) convert to YUV 10-bit

 `ffmpeg -i white.png -pix_fmt yuv444p10 -f rawvideo white.yuv`

 The resulting Y code values are equal to 943. They should be equal to 940
 = (219 * 1 + 16) * 4.
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Ticket URL: <https://trac.ffmpeg.org/ticket/7978#comment:12>
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