[FFmpeg-trac] #8054(ffmpeg:new): prores_ks codec does not allow 12bit pix_fmt

[FFmpeg]

#8054: prores_ks codec does not allow 12bit pix_fmt
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             Reporter:  shaocaholica  |                     Type:  defect
               Status:  new           |                 Priority:  normal
            Component:  ffmpeg        |                  Version:  4.1
             Keywords:  prores_ks     |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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 Summary of the bug: Apple prores4444XQ which is supported by prores_ks
 allows for 12bit RGB/YUV channels but when a 12bit pix_fmt is used a
 warning is given:

 {{{
 Incompatible pixel format 'yuv444p12le' for codec 'prores_ks', auto-
 selecting format 'yuv444p10le'
 }}}


 How to reproduce:
 {{{
 % ffmpeg -f image2 -r 24.0 -i sample_16bit.%4d.tif -c:v prores_ks
 -profile:v 5 -pix_fmt yuv444p12le -vf colormatrix=bt601:bt709
 prores4444XQ.mov

 ffmpeg version 4.1-static https://johnvansickle.com/ffmpeg/
   built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8054>
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