[FFmpeg-trac] #9374(undetermined:closed): mkv to mp4 has a color tint

[FFmpeg]

#9374: mkv to mp4 has a color tint
-------------------------------------+-------------------------------------
             Reporter:  razvan       |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:  duplicate
             Keywords:  mp4 tint     |               Blocked By:
  color                              |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by Balling):

 * status:  new => closed
 * resolution:   => duplicate
 * component:  ffmpeg => undetermined

Comment:

 This is a duplicate of #9132.

 Now, I '''will''' help you. First of all you are tagging video in limited
 range RGB. I mean, that is BS, since it is actually full range. That can
 be checked with ffplay rec.mkv -vf extractplanes=r (see black FFmpeg logo,
 in limited range RGB black 0 is reserved and cannot be used, other colors
 are also good like 247, 240, 240). Use ffmpeg -video_size 1920x1200
 -framerate 25 -f x11grab -i :0.0 -vcodec libx264rgb -crf 0 -preset
 ultrafast rec.mkv '''-color_range 2'''



 Use this: ffmpeg -i rec.mkv -vf
 scale=src_range=pc:out_color_matrix=bt709:flags=accurate_rnd -c:v libx264
 -crf 10 TESTCASE-yuv.mkv -color_primaries 1 -color_trc 1 -colorspace 1

 That will not be perfect since the sRGB does use  -color_primaries 1
 (which is BT.709) but not -color_trc 1. That is unfortunate and you can
 use

 ffmpeg -i rec.mkv -vf
 scale=src_range=pc:out_color_matrix=bt709:flags=accurate_rnd -c:v libx264
 -crf 10 TESTCASE-yuv.mkv -color_primaries 1  -color_trc iec61966_2_1
 -colorspace 1

 but that may be not supported in many cases. :)
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9374#comment:2>
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