[FFmpeg-trac] #10901(undetermined:new): HEVC with alpha to PNG does not maintain alpha

[FFmpeg]

#10901: HEVC with alpha to PNG does not maintain alpha
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             Reporter:  Jozef        |                    Owner:  (none)
  Chutka                             |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  6.1          |               Resolution:
             Keywords:  Hevc alpha   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by logiclrd):

 I suspect this is waiting for this: https://trac.ffmpeg.org/ticket/7965

 My understanding, in short: The integrated x265 decoder in FFMPEG doesn't
 yet have support for alpha channel data, so it gets lost during decoding
 and the internal bitstream is YUV and not YUVA. When the decoder starts
 supporting alpha data, I think converting to PNG frames with alpha will
 //probably// just work.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10901#comment:1>
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