addtrack

An addtrack  is fired when the browser adds a track to a MediaStream (such as when a RTCPeerConnection is renegotiated or a stream being captured using HTMLMediaElement.captureStream() gets a new set of tracks because the media element being captured loaded a new source.

The addtrack event does not get fired when JavaScript code explicitly adds tracks to the stream (by calling addTrack()).

An event handler for this event can be added by setting the MediaStream.onaddtrack property, or by calling addEventListener() on the MediaStream which you want to monitor for track additions.

General info

Specification

Media Capture and Streams
addtrack

Interface

MediaStreamTrackEvent

Bubbles

No

Cancelable

No

Target

MediaStream

Default Action

None

Properties

This event implements the properties of MediaStreamTrackEvent.

方法

This event implements the methods of MediaStreamTrackEvent.

Related events

• removetrack

规范

浏览器兼容性

See also

• Media Streams API
• WebRTC