MediaStreamTrack: kind property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2017.

The kind read-only property of the MediaStreamTrack interface returns a string set to "audio" if the track is an audio track and to "video" if it is a video track. It doesn't change if the track is disassociated from its source.


The possible values are a string with one of the following values:

  • "audio": the track is an audio track.
  • "video": the track is a video track.


Media Capture and Streams
# dom-mediastreamtrack-kind

Browser compatibility

BCD tables only load in the browser

See also