[Webkit-unassigned] [Bug 242679] New: [macOS] Canvas.getContext('2d').drawImage on a camera video stream does not work when tab is backgrounded

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242679

            Bug ID: 242679
           Summary: [macOS] Canvas.getContext('2d').drawImage on a camera
                    video stream does not work when tab is backgrounded
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: youennf at gmail.com
                CC: dino at apple.com

1. Load https://jsfiddle.net/eq5upzh6/.
2. Grant prompt
3. Once the camera starts, switch to another tab and change what the camera captures.
4. Wait 6 seconds
5. Switch back to the JSFiddle tab.

One of the canvas (canvas1) stayed to a camera frame just before the switch to the other tab.
We would expect canvas1 to keep being updated even when the other tab is backgrounded.

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