Bug 261915

Summary: JPEG XL: Animations Not Supported
Product: WebKit Reporter: tjomccall
Component: ImagesAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: kari.pihkala, karlcow, mmaxfield, oliverwilliams345, sabouhallawa, simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari 17   
Hardware: Mac (Apple Silicon)   
OS: macOS 14   
URL: https://jpegxl.info/test-page/
Attachments:
Description Flags
JPEG-XL sample animated image none

tjomccall
Reported 2023-09-21 16:14:02 PDT
Whenever a JPEG-XL image expected to be animated is opened or viewed, only the first frame appears.
Attachments
JPEG-XL sample animated image (333.45 KB, image/jxl)
2023-09-26 08:10 PDT, tjomccall 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
tjomccall
Comment 1 2023-09-26 08:10:19 PDT
Created attachment 467875 [details] JPEG-XL sample animated image
tjomccall
Comment 2 2023-09-27 06:17:12 PDT
I feel like I should close this issue. This issue appears to be specific to MacOS Sonoma and not Safari or Webkit as a whole.
Radar WebKit Bug Importer
Comment 3 2023-09-28 16:14:26 PDT
<rdar://problem/116207734>
Oliver Williams
Comment 4 2025-01-29 03:55:20 PST
This still doesn't work. There is a test page on the official JPEG-XL website. https://jpegxl.info/resources/jpeg-xl-test-page.html It is difficult for web developers to display a video with transparency in Safari. https://jakearchibald.com/2024/video-with-transparency/#it-doesnt-work-in-safari Either WebKit should fix animated AVIF bugs or ship support for animated JPEG XL. https://bugs.webkit.org/show_bug.cgi?id=275906
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