[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 Balling):

 >Nope, it converts stuff to XYB in lossy mode at very high

 I was only testing lossless mode that does not support XYB.

 >libjxl with its encoder cjxl is the absolute best encoder I've found to
 encode any kind of dither efficiently.

 No dither needed in AVIF.

 >Not a bad thing honestly. We have to move with the times.

 Will not be lossless.

 >just attach the relevant metadata or use something like BT1886?

 Has nothing to do with BT.709 matrix. That is EOTF, transfer.
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Ticket URL: <https://trac.ffmpeg.org/ticket/7621#comment:27>
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