Web/API/MediaStream/MediaStream

The MediaStream() constructor returns a newly-created MediaStream, which serves as a collection of media tracks, each represented by a MediaStreamTrack object. If any parameters are given, the specified tracks are added to the new stream. Otherwise, the stream has no tracks.

Syntax

newStream = new MediaStream();
newStream = new MediaStream(stream);
newStream = new MediaStream(tracks[]);

Parameters

stream: A different MediaStream object whose tracks are added to the newly-created stream automatically. The tracks are not removed from the original stream, so they're shared by the two streams.
tracks: An Array of MediaStreamTrack objects, one for each track to add to the stream.

Return value

A newly-created MediaStream object, either empty, or containing the tracks provided, if any.

Specifications

Specification	Status	Comment
Media Capture and StreamsThe definition of 'MediaStream' in that specification.	Candidate Recommendation

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`MediaStream()` constructor	Chrome Full support 21	Edge Full support ≤18	Firefox Full support 44	IE No support No	Opera Full support 42	Safari No support No	WebView Android Full support 37	Chrome Android Full support 25	Firefox Android Full support 42	Opera Android No support No	Safari iOS No support No	Samsung Internet Android Full support 6.0

Legend

Full support: Full support
No support: No support