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

[FFmpeg]

#4746: prores alpha blending results in opaque rectangle
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  projectsymphony                    |                   Status:  reopened
                 Type:  defect       |                Component:  swscale
             Priority:  normal       |               Resolution:
              Version:  git-master   |               Blocked By:
             Keywords:  prores       |  Reproduced by developer:  1
  alpha                              |
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by projectsymphony):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 Replying to [comment:41 cehoyos]:
 > There is another ticket now where the default behaviour is discussed.

 yes, but until that behaviour is implemented, the sample is buggy with
 ffmpeg, and so this bug should remain open.

 Additionally I am not saying that alphablend should be always active, but
 that it should be enabled for prores, because that is the expected
 behaviour for this decoder.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4746#comment:44>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker