[FFmpeg-trac] #7923(avcodec:reopened): alpha info is lost during transcode to gif from apng or animated webp

[FFmpeg]

#7923: alpha info is lost during transcode to gif from apng or animated webp
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             Reporter:  gbp.gap      |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  apng, gif,   |               Blocked By:
  alpha, webp                        |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by gbp.gap):

 More comments:

 Richard,

 Thanks for your quick reply! your suggestion (palettegen, paletteuse)  can
 remove the background and bring the alpha alive, but it causes  some
 defects (red lines) as described above.

 Any suggestion?

 -Mike

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Ticket URL: <https://trac.ffmpeg.org/ticket/7923#comment:5>
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