[FFmpeg-trac] #11331(avcodec:new): X265 HEVC Alpha transparency support

[FFmpeg]

#11331: X265 HEVC Alpha transparency support
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             Reporter:  Mista_D      |                     Type:
                                     |  sponsoring request
               Status:  new          |                 Priority:  wish
            Component:  avcodec      |                  Version:  git-
             Keywords:  alpha x265   |  master
  hevc                               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Very nice to see libx265 adding alpha channel support to the codec,
 unfortunately the feature is not yet integrated into FFmpeg.

 Offering $500 USD for a working patch to add alpha channel libx265
 decoding and encoding support to FFmpeg please. Similar to what VP9 and
 HEVC_VIDEOTOOLBOX codecs offer.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11331>
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