[Webkit-unassigned] [Bug 191053] New: Fix Safari macOS/iOS high speed audio/video algorithm

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191053

            Bug ID: 191053
           Summary: Fix Safari macOS/iOS high speed audio/video algorithm
           Product: WebKit
           Version: Safari 12
          Hardware: All
                OS: All
            Status: NEW
          Keywords: HTML5
          Severity: Normal
          Priority: P1
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: eugene at eugenesiew.com

Created attachment 353354

  --> https://bugs.webkit.org/attachment.cgi?id=353354&action=review

Comparative examples of Chrome using Ilya Grigorik's video speed plugin vs. Safari's console solution

High-speed HTML5 video playback on Safari (both macOS and iOS) suffer from audio modulation that does not exist on Chrome. See attached videos as examples, or reproduce using YouTube's native speed acceleration controls to compare both browsers.

If there was a way to use AVAudioTimePitchAlgorithm (https://developer.apple.com/documentation/avfoundation/avaudiotimepitchalgorithm), that might solve the problem, at least on native apps.

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