[Webkit-unassigned] [Bug 229485] New: HTMLVideoElement.currentTime keeps zero for audio source if HTMLVideoElement.muted is true

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=229485

            Bug ID: 229485
           Summary: HTMLVideoElement.currentTime keeps zero for audio
                    source if HTMLVideoElement.muted is true
           Product: WebKit
           Version: Safari 14
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: taoyagi at mozilla.com

HTMLVideoElement.currentTime keeps zero for audio source if HTMLVideoElement.muted is true. It can't reproducible in Chrome of Firefox.

Example code:

<script>
const video = document.createElement('video');
video.src = 'your_audio_file.mp3';
video.loop = true;
video.muted = true;
const check = () => {
  setTimeout(check, 1000);
  console.log(video.currentTime);
};
check();
</script>

Another example:

You can also confirm the problem in

https://www.w3schools.com/html/tryit.asp?filename=tryhtml5_audio_all

by replacing the code with the following.

<video muted controls>
<source src="your_audio_file.mp3" type="audio/mpeg">
</video>

You will see zero duration time on the control panel.

OS: macOS Big Sur 11.5.2
Browser: Safari 14.1.2

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