[wp-trac] [WordPress Trac] #51228: Include support for the AVIF image format

[WordPress Trac]

#51228: Include support for the AVIF image format
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 Reporter:  lukefiretoss             |       Owner:  adamsilverstein
     Type:  enhancement              |      Status:  assigned
 Priority:  normal                   |   Milestone:  Future Release
Component:  Media                    |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-unit-    |     Focuses:  performance,
  tests                              |  sustainability
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Comment (by adamsilverstein):

 > So when will WordPress support the Avif image format? I hope WordPress
 version 6.5 will support it

 @phanduynam yes, 6.5 or possibly 6.6, depending on the timing of an Edge
 stable release with AVIF support and our beta release - the deadline for
 committing new features.

 In the meantime, I am updating the PR and we need more testing to make
 sure AVIFs work as expected.

 I added unit tests to the PR as well as some test reference AVIFs, these
 surfaced some compatibility issues with specific file types (transparent
 and animated AVIFs) which I addressed in the PR. These tests cover the
 same points as the tests for WebP.

 I noticed that our `wp_get_avif_info` helper function doesn't detect the
 AVIF type (sizes work fine which is the critical thing). I think we can
 use the "magic number" approach we use for mime type detection to detect
 AVIF files on older PHP versions, but I'm not sure how reliable that is
 and if we really need it.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51228#comment:60>
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