[Webkit-unassigned] [Bug 208095] New: Fast <video>.playbackRate incredibly jerky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=208095

            Bug ID: 208095
           Summary: Fast <video>.playbackRate incredibly jerky
           Product: WebKit
           Version: Safari 13
          Hardware: iPhone / iPad
                OS: iOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jerryj at duckware.com

1. Visit https://www.duckware.com/test/webkit/iosplayvideofails.html
2. Click on 'playbackRate=10' button, and then play video
3. Compare results on iPad vs any Windows computer

On iPad, the result is very 'jerky'.  On Windows, the result is incredibly smooth.  On the iPad, I can obtain very smooth results via other means, which means that setting playbackRate should also be able to.  Why can't it?

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