[Webkit-unassigned] [Bug 225868] New: Distorted audio when altering playback-rate on HTMLVideoElement

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=225868

            Bug ID: 225868
           Summary: Distorted audio when altering playback-rate on
                    HTMLVideoElement
           Product: WebKit
           Version: Safari 14
          Hardware: All
                OS: All
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: chris at wunderwerk.io
                CC: cdumez at apple.com

Created attachment 428823

  --> https://bugs.webkit.org/attachment.cgi?id=428823&action=review

Sample recordings with older and newer versions of safari.

This behavior occurs after updating safari from 14.0 to 14.1 on macOS 11.3.1 and iOS 14.5.1.

When using safari 14.0 on macOS or iOS this problem does not occur.

Please test with https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_av_prop_playbackrate

Press the `Set video to be play in slow motion` button and listen.

When using earphones the problem is clearly audible.

Find two sample files attached.

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