[FFmpeg-trac] #7621(avformat:open): Add .avif support (AV1 Image File Format

[FFmpeg]

#7621: Add .avif support (AV1 Image File Format
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             Reporter:  Ewout        |                    Owner:  Vignesh
                                     |  Venkatasubramanian
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mov          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Vignesh Venkatasubramanian):

 > All HDR movies use top-left siting for chroma. When you extract a plane
 420 samples should be tagged as top-left in AVIF. Use any HDR10 movie. You
 already pass transfer, matrix and primaries.

 If you are using libaom-av1 encoder for creating AVIF images, you can pass
 -aom-params "chroma-sample-location=xx" for whatever value you need.
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Ticket URL: <https://trac.ffmpeg.org/ticket/7621#comment:22>
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