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

FFmpeg trac at avcodec.org
Fri Dec 16 20:57:14 CET 2011

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

Comment (by cehoyos):

 Afaict, the conversion from gray8a to yuv (including yuv420p) is the only
 one that works (for gray8a).
 out_yuv420p.tif looks fine with ImageMagick.

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/769#comment:6>
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