[Webkit-unassigned] [Bug 261668] New: (IOS 17) AudioContext.createMediaElementSource breaks video playback

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261668

            Bug ID: 261668
           Summary: (IOS 17) AudioContext.createMediaElementSource breaks
                    video playback
           Product: WebKit
           Version: Safari 17
          Hardware: iPhone / iPad
                OS: Unspecified
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ethanchong at canva.com
                CC: cdumez at apple.com

Issue:
On IOS 17, Video playback is broken on Safari when a video element is proxied by AudioContext.createMediaElementSource. When video.play() is triggered, the video element is stuck on the first frame, there aren't any errors reported from HTMLVideoElement. Video Playback is fine when Web Audio API is not used.


Replication:
https://codepen.io/Ethan-Chong-the-solid/pen/mdaBxxP, open the Codepen on an iPhone with IOS 17. Play the video, it will stuck on the first frame without progressing.

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