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

FFmpeg trac at avcodec.org
Tue Sep 10 05:46:14 EEST 2024


#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 MasterQuestionable):

 ͏    Data, are no more than data. It is all upon: the interpretation.
 ͏    RGB and YUV:
 ͏    Both would have some interpreted values unrepresentable by another.
 ͏    But that doesn't change that they're of the same possibilities. (at
 the same bit-depth)

 ͏    The display may accept raw YUV alike, while the application does not
 necessarily provide.
 ͏    Based on predominance of RGB: displays tend to assert which default.
 ͏    (which means the eventual implicit conversion)

 ͏    "through XYZ, not RGB."
 <!^>    The very reason things ended up in total havoc...
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11182#comment:16>
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