[Webkit-unassigned] [Bug 259376] New: Flash of grey background in between showing video poster and playing the actual video

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Jul 20 16:28:17 PDT 2023


https://bugs.webkit.org/show_bug.cgi?id=259376

            Bug ID: 259376
           Summary: Flash of grey background in between showing video
                    poster and playing the actual video
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Mac (Apple Silicon)
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bramus at google.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

(1) Go to http://scroll-driven-animations.style/
(2) Hover one of the images of the visual down the page.

The visuals are video elements with a poster image. The videos are paused on load. Upon `pointerenter` the, a `.play()` is triggered. Upon `pointerleave`, a `.pause()` is triggered.

What happens: When swapping out the poster for the video, the video shows a grey background while the video file is still loading. This is very much visible when on a slow connection.

What I expected to happen (and what other browsers do): keep showing the poster image until there is enough data to start rendering the video source, as this glitch of grey is a visual disturbance.

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