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

[FFmpeg]

#9374: mkv to mp4 has a color tint
-------------------------------------+-------------------------------------
             Reporter:  razvan       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  mp4 tint     |               Blocked By:
  color                              |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 ubuntu 21.04
 I have the same results on ubuntu and windows.

 I am recording the screen in a lossless format to have small CPU load.
 Here I use latest git version from johnvansickle.com

 ffmpeg -video_size 1920x1200 -framerate 25 -f x11grab -i :0.0 -vcodec
 libx264rgb -crf 0 -preset ultrafast rec.mkv

 Input #0, matroska,webm, from 'vid.mkv':
   Metadata:
     ENCODER         : Lavf58.64.100
   Duration: 00:00:29.67, start: 0.000000, bitrate: 2829 kb/s
     Stream #0:0: Video: h264 (High 4:4:4 Predictive), gbrp(pc,
 gbr/unknown/unknown, progressive), 1920x1200, 30 fps, 30 tbr, 1k tbn, 60
 tbc (default)
     Metadata:
       ENCODER         : Lavc58.112.103 libx264rgb
       DURATION        : 00:00:29.666000000



 then I convert/compress it in mp4
 using latest git version from johnvansickle.com

 ffmpeg -i rec.mkv -vcodec libx264 rec-git.mp4

 ffprobe rec.mp4
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rec.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf59.4.101
   Duration: 00:00:02.16, start: 0.000000, bitrate: 719 kb/s
   Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 /
 0x31637661), gbrp(tv, gbr/unknown/unknown), 1920x1200, 714 kb/s, 25 fps,
 25 tbr, 12800 tbn (default)
     Metadata:
       handler_name    : VideoHandler
       vendor_id       : [0][0][0][0]

 but the resulting mp4  is tinted by green and pink color (white areas are
 tinted green and dark areas are tinted pink)


 I have the same result using ffmpeg 4.4 for mkv to mp4, mp4 is tinted in
 green and pink.

 But if I use ffmpeg 4.3.1 for mkv to mp4 conversion the result is not
 tinted anymore

 fprobe rec-4.3.1.mp4
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rec-4.3.1.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.45.100
   Duration: 00:00:02.16, start: 0.000000, bitrate: 716 kb/s
   Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 /
 0x31637661), yuv444p, 1920x1200, 711 kb/s, 25 fps, 25 tbr, 12800 tbn
 (default)
     Metadata:
       handler_name    : VideoHandler
       vendor_id       : [0][0][0][0]
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9374>
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