[FFmpeg-trac] #2799(avcodec:open): No support for cmyk jpeg

[FFmpeg]

#2799: No support for cmyk jpeg
------------------------------------+-----------------------------------
             Reporter:  cyril       |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  mjpeg       |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+-----------------------------------
Changes (by cehoyos):

 * keywords:   => mjpeg
 * status:  new => open
 * component:  FFplay => avcodec
 * reproduced:  0 => 1


Comment:

 FFmpeg originally correctly reported that it cannot decode the image, now
 an image with incorrect colours and a completely transparent alpha layer
 is decoded without any warning.
 {{{
 $ ffmpeg -i SLW_LOGO_CMYK.jpg
 ffmpeg version N-54924-g5156d48 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jul 25 2013 09:01:09 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 40.100 / 52. 40.100
   libavcodec     55. 19.100 / 55. 19.100
   libavformat    55. 12.102 / 55. 12.102
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 81.103 /  3. 81.103
   libswscale      2.  4.100 /  2.  4.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, image2, from 'SLW_LOGO_CMYK.jpg':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: mjpeg, yuva444p, 4776x2033, 25 tbr, 25 tbn, 25 tbc
 At least one output file must be specified
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2799#comment:1>
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