[FFmpeg-trac] #9573(avcodec:closed): libx264 ignores color range flag for gray10 input

FFmpeg trac at avcodec.org
Fri Mar 25 00:47:30 EET 2022


#9573: libx264 ignores color range flag for gray10 input
-------------------------------------+-------------------------------------
             Reporter:  Diederick    |                    Owner:  (none)
  Niehorster                         |
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:  invalid
             Keywords:  libx264      |               Blocked By:
  gray10                             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Balling):

 >-crf 0 was never supposed to be lossless with x264 [and ffmpeg too], only
 for 8 bit that is true! For 10 bit -qp 0 is needed

 I found out where I saw it first '''quite long time ago:'''
 https://forum.videohelp.com/threads/382367-X265-Lossless-not-really-
 lossless-and-I-can-prove-it#post2475951 Just will leave it here for
 posterity.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9573#comment:20>
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