[Webkit-unassigned] [Bug 200949] New: Media Source Extensions performance during seek
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Aug 20 16:08:49 PDT 2019
https://bugs.webkit.org/show_bug.cgi?id=200949
Bug ID: 200949
Summary: Media Source Extensions performance during seek
Product: WebKit
Version: Safari Technology Preview
Hardware: All
OS: All
Status: NEW
Severity: Normal
Priority: P2
Component: New Bugs
Assignee: webkit-unassigned at lists.webkit.org
Reporter: dustin.kerstein at gmail.com
The following JSFiddle uses both MSE and WebGL (through Three.js) and downloads an MP4Dashed mp4 and then attempts to seek through every single frame and then loops to the beginning. Neither Chrome nor Firefox seem to have any issue with this use-case, but Safari 12.1.2 (and others) only make it through the first loop, and then performance slows to a crawl.
https://jsfiddle.net/8w2Lb4dt/
I'm also hoping to get this working on iOS 13, but I figure first getting it working on Desktop Safari is probably the best path forward. Is there any reason this particular use-case for MSE + OSX/iOS isn't valid?
Thanks,
Dustin
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