[FFmpeg-trac] #831(avcodec:closed): gif: 1bpp with transparency decodes to black screen

FFmpeg trac at avcodec.org
Mon Dec 26 05:00:40 CET 2011

#831: gif: 1bpp with transparency decodes to black screen
             Reporter:  ami_stuff   |                    Owner:
                 Type:  defect      |                   Status:  closed
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:  invalid
             Keywords:  bmp alpha   |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by cehoyos):

 Replying to [comment:2 beastd]:
 > The patch is IMHO, as you already pointed yourself, not a good idea.
 > Some picky readers might not accept the files and if Microsoft ever
 decides to extend the format in
 > that place the FFmpeg generated files might be invalid or misinterpreted
 (rather unlikely but still).

 I believe we should produce such samples if ImageMagick, GIMP or Photoshop
 read them with transparency, it is possible that this only needs another

Ticket URL: <http://www.avcodec.org/trac/ffmpeg/ticket/831#comment:3>
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