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

FFmpeg trac at avcodec.org
Tue Aug 31 06:52:28 EEST 2021


#7978: inaccurate conversion from YCbCr Narrow range to RGB Full range
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------
Changes (by Balling):

 * status:  closed => reopened
 * resolution:  invalid =>

Comment:

 Okay, I was wrong, I used yuvview (hex view in settings) and your file is
 indeed using in hex 0x3ac 0x200 0x200. So the bug here is not about the
 scale: even normal production of a png of -vf extractplanes=y will produce
 65283 Y only png. I suppose the idea that 10 bit value in png 32 bit will
 be just *64 is wrong. Sigh.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/7978#comment:6>
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