[FFmpeg-trac] #769(swscale:open): png gray8 alpha decodes incorrectly

[FFmpeg]

#769: png gray8 alpha decodes incorrectly
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             Reporter:  ami_stuff    |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  swscale
              Version:  git-master   |               Resolution:
             Keywords:  gray8a       |               Blocked By:
  alpha png                          |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Changes (by cehoyos):

 * keywords:  gray8a alpha => gray8a alpha png


Comment:

 gray_alpha.png was fixed by Michael, the transparency information of
 basi4a08.png gets lost with
 ffmpeg -i basi4a08.png -pix_fmt rgba out.tif

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/769#comment:10>
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