[Webkit-unassigned] [Bug 241665] New: mp4 file doesn't produce any sound when played

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241665

            Bug ID: 241665
           Summary: mp4 file doesn't produce any sound when played
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Mac (Apple Silicon)
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: karlcow at apple.com

Created attachment 460264

  --> https://bugs.webkit.org/attachment.cgi?id=460264&action=review

Console Log when the MP4 is playing

1. with Safari build 18614.1.14.1.15 on macOS Ventura
2. Go to http://ipla-e1-78.pluscdn.pl/p/movies/8f/8fc6aa7d3808f476dee9b99722343b30.mp4
3. Wait for the file to load
4. Click Play

Expected:
Video starts with the sound

Actual:
Video starts without sound


* Working on Firefox 103.0a1 (2022-06-14) (64-bit)
* Working on Chrome Version 104.0.5106.0 (Official Build) canary (arm64)
* Was already failing on Safari 13.1.2 and Safari 13.1 on Mac OS X 10.15.4

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