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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The RTCPeerConnection.getStreamById() method returns the MediaStream with the given id that is associated with local or remote end of the connection. If no stream matches, it returns null.

This property has been replaced with the RTCPeerConnection.getLocalStreams and RTCPeerConnection.getRemoteStreams properties. If you have code that uses stream, you will need to update, since browsers have begun to remove support for stream.


var mediaStream = pc.getStream(id);


Is a DOMString corresponding to the stream to return.


var stream = pc.getStreamById(myTrackId);
if (stream) {
  console.log("Found stream: " + stream.id);


Running the following code before any other code will create RTCPeerConnection.prototype.getStreamById() if it's not natively available.

// from: https://bugs.chromium.org/p/chromium/issues/detail?id=698163&desc=5#c10
RTCPeerConnection.prototype.getStreamById = function(id) {
  try {
    var localStreams = this.getLocalStreams();
    var remoteStreams = this.getRemoteStreams();
    var i;
    for (i = 0; i < localStreams.length; i++) {
     if (localStreams[i].id == id)
       return localStreams[i];
    for (i = 0; i < remoteStreams.length; i++) {
     if (remoteStreams[i].id == id)
       return remoteStreams[i];
  } catch(e) {}
  return null;


Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'RTCPeerConnection.getStreamById()' in that specification.
Candidate Recommendation Initial specification.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support56 Yes22 ?


37 — 43

FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support5656 Yes44


37 — 43

? ?

1. Promise based version.

See also

Document Tags and Contributors

 Contributors to this page: fscholz, jpmedley, arturparkhisenko, abbycar, teoli
 Last updated by: fscholz,