[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 michael):

 Replying to [comment:14 ami_stuff]:
 > Finally I was able to encode sample with a real alpha channel:
 >
 > http://www1.datafilehost.com/d/0436af02

 it seems this is "404"

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Ticket URL: <https://trac.ffmpeg.org/ticket/2616#comment:15>
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