The MediaStream.onremovetrack property is an EventHandler which specifies a function to be called when the removetrack event occurs on a MediaStream instance. This happens when a track of any kind is removed from the media stream. This event is fired when the browser removes a track from the stream (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 removetrack event does not get fired when JavaScript code explicitly removes tracks from the stream (by calling removeTrack()).


MediaStream.onremovetrack = eventHandler;


This should be set to a function which you provide that accepts as input a MediaStreamTrackEvent object representing the removetrack event which has occurred. The MediaStreamTrack representing the track which was removed is specified in the event's track property.


This example adds a listener which, when a track is removed from the stream, logs the track that was removed.

stream.onremovetrack = function(event) {
  let trackList = document.getElementById("tracks");
  let label = document.createElement("li");

  label.innerHTML = "Removed: " + event.track.kind + ": " + event.track.label;


Specification Status Comment
Media Capture and Streams
The definition of 'MediaStream.onremovetrack' in that specification.
Candidate Recommendation Initial specification.

Browser compatibility

ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
onremovetrackChrome Full support 26Edge Full support 12Firefox No support NoIE No support NoOpera No support NoSafari Full support YesWebView Android Full support 37Chrome Android Full support 26Firefox Android No support NoOpera Android No support NoSafari iOS Full support YesSamsung Internet Android Full support 1.5


Full support
Full support
No support
No support

See also