[wp-trac] [WordPress Trac] #55443: Create WebP sub-sizes and use for output

[WordPress Trac]

#55443: Create WebP sub-sizes and use for output
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 Reporter:  adamsilverstein                      |       Owner:
                                                 |  adamsilverstein
     Type:  enhancement                          |      Status:  assigned
 Priority:  normal                               |   Milestone:  6.1
Component:  Media                                |     Version:  6.0
 Severity:  normal                               |  Resolution:
 Keywords:  has-unit-tests needs-dev-note        |     Focuses:
  needs-docs needs-user-docs needs-patch 2nd-    |  performance
  opinion needs-testing                          |
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Comment (by dd32):

 Just noting here, that these additional webp conversions appear to have
 been the leading cause of upload failures on the WordPress Photo Directory
 in recent weeks. See #meta6142 and tickets closed as duplicate of it.

 The errors were generally along the lines of `Allowed memory size of 256M
 bytes exhausted (tried to allocate 90M bytes` (obviously with byte values)
 while attempting to perform the initial full-size-original jpeg -> webp
 conversion.

 It hasn't affected ''every upload'', only that of certain images.
 Potentially related to the `$quality` value being passed for webp requests
 (IIRC the default of 82 was optimized for jpeg?).

 I've disabled the jpeg->webp conversion there [meta12023], temporarily at
 least, as we don't currently utilise the webp in the directory, however,
 this might be a sign that it might be worth considering only generating
 webp's for the resized images, rather than for the original file too.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55443#comment:123>
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