[FFmpeg-trac] #7342(avcodec:new): Wrong colours when decoding dnxhd

[FFmpeg]

#7342: Wrong colours when decoding dnxhd
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               Reporter:  cehoyos     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avcodec
                Version:  git-master  |               Keywords:  dnxhd
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
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 http://ffmpeg.org/pipermail/ffmpeg-user/2018-August/040775.html
 A user provided a dnxhd file that looks ugly when decoded with FFmpeg and
 an rgb file that shows the expected output, I will attach two files.
 {{{
 $ ffmpeg -i Color_Profile_nuke11_DNxHD-mov64_444_Full.mov -qscale 2
 out.avi
 ffmpeg version N-91548-g481741e Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 6.4.0 (GCC)
   configuration: --enable-gpl --enable-gnutls --enable-libxml2
   libavutil      56. 18.102 / 56. 18.102
   libavcodec     58. 22.100 / 58. 22.100
   libavformat    58. 17.101 / 58. 17.101
   libavdevice    58.  4.101 / 58.  4.101
   libavfilter     7. 26.100 /  7. 26.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Color_Profile_nuke11_DNxHD-
 mov64_444_Full.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     uk.co.thefoundry.Application: Nuke
     uk.co.thefoundry.ApplicationVersion: 11.1v3
     uk.co.thefoundry.YCbCrMatrix: Rec 709
     uk.co.thefoundry.Colorspace: linear
     uk.co.thefoundry.Writer: mov64
   Duration: 00:00:00.04, start: 0.000000, bitrate: 352561 kb/s
     Stream #0:0(eng): Video: dnxhd (DNXHD) (AVdn / 0x6E645641),
 yuv444p10le(pc, bt709/unknown/unknown), 1920x1080, 352321 kb/s, SAR 1:1
 DAR 16:9, 24 fps, 24 tbr, 2400 tbn, 2400 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : DNxHD
 Please use -q:a or -q:v, -qscale is ambiguous
 Stream mapping:
   Stream #0:0 -> #0:0 (dnxhd (native) -> mpeg4 (native))
 Press [q] to stop, [?] for help
 Output #0, avi, to 'out.avi':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     uk.co.thefoundry.Application: Nuke
     uk.co.thefoundry.ApplicationVersion: 11.1v3
     uk.co.thefoundry.YCbCrMatrix: Rec 709
     uk.co.thefoundry.Colorspace: linear
     uk.co.thefoundry.Writer: mov64
     ISFT            : Lavf58.17.101
     Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 24 fps, 24 tbn, 24 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.22.100 mpeg4
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
 frame=    1 fps=0.0 q=2.0 Lsize=      87kB time=00:00:00.04
 bitrate=17080.2kbits/s speed=1.22x
 video:81kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 6.957787%
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7342>
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