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.

Learning resources on MDN

• HTMLMediaElement: controller property

Browser support

• Chrome ❌
• Chrome Android ❌
• Edge ❌
• Firefox ❌ See bugzil.la/847377
• Firefox for Android ❌ See bugzil.la/847377
• Safari 7 Released on 2013-10-22
• Safari on iOS 7 Released on 2013-09-18

View web-platform-tests results for this feature - View the feature source file (dist) - Edit the feature - Report an issue about this feature