NEW208095
Fast <video>.playbackRate incredibly jerky 
https://bugs.webkit.org/show_bug.cgi?id=208095
Summary Fast <video>.playbackRate incredibly jerky
Jerry Jongerius
Reported 2020-02-22 14:07:26 PST
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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Radar WebKit Bug Importer
Comment 1 2020-02-22 14:52:55 PST
<rdar://problem/59701053>
Jerry Jongerius
Comment 2 2020-02-23 13:23:28 PST
A good example: Visit https://www.w3.org/2010/05/video/mediaevents.html, click on "Bunny movie", click on "play()", click on "playbackRate++" six times. In Chrome/Windows it sure looks like video is being updated at the display 60 fps. But on iPad, the video looks like it is being updated only a couple of times per second.
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