[FFmpeg-trac] #2939(avcodec:new): Support 12bit colour jpeg

[FFmpeg]

#2939: Support 12bit colour jpeg
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               Reporter:  cehoyos      |                  Owner:
                   Type:  enhancement  |                 Status:  new
               Priority:  wish         |              Component:  avcodec
                Version:  git-master   |               Keywords:  mjpeg
             Blocked By:               |               Blocking:
Reproduced by developer:  0            |  Analyzed by developer:  0
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 I will attach two 12bit colour jpeg samples, made with libjpegv6b, see
 also ticket #2812.
 {{{
 $ ffmpeg -i lena.jpg
 ffmpeg version N-56060-gbcd1c20 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Sep  6 2013 09:47:17 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 43.100 / 52. 43.100
   libavcodec     55. 31.101 / 55. 31.101
   libavformat    55. 16.101 / 55. 16.101
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 83.104 /  3. 83.104
   libswscale      2.  5.100 /  2.  5.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 [mjpeg @ 0x1b72020] lossy that is not <= 8 bits/component or 16-bit gray
 is not implemented. Update your FFmpeg version to the newest one from Git.
 If the problem still occurs, it means that your file has a feature which
 has not been implemented.
 [image2 @ 0x1b71080] decoding for stream 0 failed
 [image2 @ 0x1b71080] Could not find codec parameters for stream 0 (Video:
 mjpeg): unspecified size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 lena.jpg: could not find codec parameters
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2939>
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