Bug 275906 - Animated AVIF with transparency doesn't play correctly
Summary: Animated AVIF with transparency doesn't play correctly
Status: RESOLVED MOVED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Images (show other bugs)
Version: Safari Technology Preview
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2024-06-26 10:27 PDT by Jake Archibald
Modified: 2024-08-05 10:32 PDT (History)
5 users (show)

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Jake Archibald 2024-06-26 10:27:00 PDT 
https://static-misc-3.glitch.me/alpha-video-test/avif-img.html

In Safari 17.5, it plays back slowly, and with incorrect transparency.

Compare to Chrome or Firefox for the correct rendering (although playback performance is poor in Chrome) https://issues.chromium.org/issues/349566435.
Comment 1 Radar WebKit Bug Importer 2024-06-26 11:06:01 PDT 
<rdar://problem/130607349>
Comment 2 Said Abou-Hallawa 2024-06-26 14:26:12 PDT 
Thank you for the report! This is an issue below WebKit, tracked by Apple internally as rdar://130607349.