[FFmpeg-trac] #4746(avcodec:new): prores alpha blending results in opaque rectangle

[FFmpeg]

#4746: prores alpha blending results in opaque rectangle
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             Reporter:               |                    Owner:
  projectsymphony                    |                   Status:  new
                 Type:  defect       |                Component:  avcodec
             Priority:  normal       |               Resolution:
              Version:  git-master   |               Blocked By:
             Keywords:               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by projectsymphony):

 Not sure, there is a transparent layer which blended correctly, and if I
 don't modify the pixel format during conversion it still shows the
 blending problem.

 Anyway I uploaded the sample to ftp incoming / proresalphablock . mov
 Can you confirm upload went through?

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Ticket URL: <https://trac.ffmpeg.org/ticket/4746#comment:2>
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