Bug 305154

Summary:	Some animated AVIFs appear black on Safari
Product:	WebKit	Reporter:	matiasbryan
Component:	Accessibility	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	andresg_22, tyler_w, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari 18
Hardware:	Mac (Apple Silicon)
OS:	macOS 15

matiasbryan

Reported 2026-01-08 15:35:32 PST

Some animated AVIFs have a black background when viewed in Safari. Example: https://bryansandbox.imgix.net/_static/bugs/GEN-1226/elephant.png?fm=avif User agent: ``` Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15 ``` This only happens in Safari. Seems to have been an issue since July (haven't tested before that).

Attachments
Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2026-01-08 15:35:38 PST

<rdar://problem/167802969>

Tyler Wilcock

Comment 2 2026-01-09 07:32:14 PST

*** This bug has been marked as a duplicate of bug 305155 ***

Note You need to log in before you can comment on or make changes to this bug.