[Webkit-unassigned] [Bug 232124] New: video appears blank with only audio playing if video element is appended to the dom tree

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232124

            Bug ID: 232124
           Summary: video appears blank with only audio playing if video
                    element is appended to the dom tree
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jean-yves.avenard at apple.com

If you do on iOS:

    let parent = document.getElementById("videoContainer");
    let ve = document.createElement("video");
    ve.src = "https://devstreaming-cdn.apple.com/videos/wwdc/2021/10073/7/53148F9F-7E28-46AA-AD05-CC2ABEC68EDC/downloads/wwdc2021-10073_sd.mp4";
    ve.play();

https://codepen.io/iffwang/pen/powQodO

Then only the audio will play, the image stays black.

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