[FFmpeg-trac] #2616(avcodec:open): support matrox mpeg-2 I-frame with alpha codec (m704 fourcc)

[FFmpeg]

#2616: support matrox mpeg-2 I-frame with alpha codec (m704 fourcc)
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             Reporter:  ami_stuff    |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  matrox       |               Blocked By:
  mpeg2video alpha                   |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by cehoyos):

 Replying to [comment:19 ami_stuff]:
 > the same colorful thing is visible with "Matrox Uncompressed HD with
 Alpha (M104)", so to move on, #2611 should be fixed first (maybe fix for
 #2611 will fix support of "Matrox Uncompressed HD (M102) as well - I have
 samples)
 Please provide samples with FourCC M102 and M104.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2616#comment:20>
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