[Webkit-unassigned] [Bug 265796] New: HDR AVIF photos are not displayed properly on HDR monitors

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=265796

            Bug ID: 265796
           Summary: HDR AVIF photos are not displayed properly on HDR
                    monitors
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: greg323464 at gmail.com
                CC: sabouhallawa at apple.com

HDR AVIF photos are tone mapped to SDR even on HDR / XDR displays, when they should be displayed with proper HDR (EDR) results.

The Chrome, Edge, Brave, and Opera web browsers all properly display such images. While all of those browsers are a suitable workaround on MacOS (instead of Safari), they are all dependent upon WebKit for browsing on iOS / iPadOS. Therefore, it is not possible to properly view HDR photos on Apple iPhone / iPad, which is unfortunate as Apple has some of the best hardware out there.

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