Bug 245669 - 10bit AVIF images with an alpha channel won't render
Summary: 10bit AVIF images with an alpha channel won't render
Status: RESOLVED MOVED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Images (show other bugs)
Version: Safari 16
Hardware: All iOS 16
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2022-09-26 04:00 PDT by buzz_thrill_0z
Modified: 2022-12-13 16:09 PST (History)
7 users (show)

See Also:

Attachments
10bit AVIF image with alpha channel (890 bytes, application/octet-stream)
2022-09-26 04:00 PDT, buzz_thrill_0z 		no flags Details
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Description buzz_thrill_0z 2022-09-26 04:00:30 PDT 
Created attachment 462620 [details]
10bit AVIF image with alpha channel

10bit AVIF images, that contain an alpha channel, cannot be rendered in Safari on iPadOS 16.1 and Ventura

Even opened in their own tab the image is never displayed.

Encoding the image to an 8bit AVIF using the ImageMagick command line option -depth 8 fixes the issue.
Comment 1 Radar WebKit Bug Importer 2022-09-26 14:26:18 PDT 
<rdar://problem/100428268>
Comment 2 Greg 2022-09-29 18:55:30 PDT 
I'm seeing the same issue, transparency is ignored on iOS 16.0.2 for HDR AVIF images.
Comment 3 Brent Fulgham 2022-12-13 16:09:39 PST 
This is actually being tracked in:
<rdar://100800464>

The bug is in a component outside of WebKit, therefore resolving as MOVED since we cannot fix this in a WebKit change.