[FFmpeg-trac] #10220(undetermined:new): AVIF image's alpha track is not being found

[FFmpeg]

#10220: AVIF image's alpha track is not being found
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             Reporter:  Meten        |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  av1 libaom-  |               Blocked By:
  av1                                |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by Meten):

 * Attachment "icon.png" added.

 PNG file used
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Ticket URL: <https://trac.ffmpeg.org/ticket/10220>
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