The getVideoTracks() method of the MediaStream interface returns a sequence of MediaStreamTrack objects representing the video tracks in this stream.
MediaStream.getVideoTracks()
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
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getVideoTracks |
26
|
12
|
22
Before Firefox 64, this method returned an array of
VideoStreamTrack objects. However,
MediaStreamTrack has now subsumed that interface's functionality.
|
No
|
15
|
11
|
37
|
26
|
22
Before Firefox 64, this method returned an array of
VideoStreamTrack objects. However,
MediaStreamTrack has now subsumed that interface's functionality.
|
No
|
11
|
1.5
|
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/MediaStream/getVideoTracks
