MediaStream.getVideoTracks()

The getVideoTracks() method of the MediaStream interface returns a sequence of MediaStreamTrack objects representing the video tracks in this stream.

Syntax

var mediaStreamTracks[] = mediaStream.getVideoTracks();

Parameters

None.

Return value

An array of MediaStreamTrack objects, one for each video track contained in the media stream. Video tracks are those tracks whose kind property is video. The array is empty if the stream contains no video tracks.

Note: The order of the tracks is not defined by the specification, and may not be the same from one call to getVideoTracks() to another.

Early versions of this API included a special VideoStreamTrack interface which was used as the type for each entry in the list of video streams; however, this has since been merged into the main MediaStreamTrack interface.

Example

The following example, extracted from Chrome's Image Capture / Photo Resolution Sample, uses getVideoTracks() to retrieve a track for passing to the ImageCapture() constructor. 

var imageCapture;

navigator.mediaDevices.getUserMedia({video: true})
.then(mediaStream => {
  document.querySelector('video').srcObject = mediaStream;

  const track = mediaStream.getVideoTracks()[0];
  imageCapture = new ImageCapture(track);

  return imageCapture.getPhotoCapabilities();
})

Specifications

Specification Status Comment
Media Capture and Streams
The definition of 'getVideoTracks()' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome Full support YesEdge Full support 12Firefox ? IE ? Opera Full support YesSafari ? WebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android Full support Yes

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

Contributors to this page: Sheppy, servinlp, fscholz, jpmedley
Last updated by: Sheppy,