[wp-trac] [WordPress Trac] #53653: Scaled down WebP images may be with much larger file size than the original

[WordPress Trac]

#53653: Scaled down WebP images may be with much larger file size than the original
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 Reporter:  azaozz                     |       Owner:  (none)
     Type:  defect (bug)               |      Status:  new
 Priority:  normal                     |   Milestone:  5.8
Component:  Media                      |     Version:  trunk
 Severity:  normal                     |  Resolution:
 Keywords:  needs-patch needs-testing  |     Focuses:
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Comment (by azaozz):

 Looking a bit more, seems all WebP images exported by Gimp 2.10 (latest)
 are detected as `animated-alpha` by `wp_get_webp_info()` despite that they
 were saved as lossy and lossless (no animation).

 Looking in the file headers, the "type bites" are indeed `VP8X`. Seems
 this is a problem with the JPEG => WebP converting software or these bites
 cannot be used to reliably detect lossy and lossless WebP images.

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Ticket URL: <https://core.trac.wordpress.org/ticket/53653#comment:1>
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