BASELINE NowYouCanUse.com
Limited Availability

MediaController

The playback of multiple <video> or <audio> elements can be coordinated by a MediaController instance, for example to synchronize a sign-language interpreter track with the main video track.
Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Oct 22, 2013.
Desktop Browser Engine Support
Google Chrome
—
Unsupported
Mozilla Firefox
—
Unsupported
Apple Safari
7
Supported
Microsoft Edge
—
Unsupported
Mobile Browser Engine Support
Chrome Android
—
Firefox Android
—
Safari iOS
7
Specifications and References
id: mediacontroller