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Showing content from http://developer.mozilla.org/en-US/docs/Web/API/MediaStream/addTrack below:

MediaStream: addTrack() method - Web APIs

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1. Web
2. Web APIs
3. MediaStream
4. addTrack()

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• Syntax
• Specifications
• Browser compatibility
• See also

1. Media Capture and Streams API (Media Stream)
2. MediaStream
3. Constructor
   1. MediaStream()
4. Instance properties
   1. active
   2. id
5. Instance methods
   1. addTrack()
   2. clone()
   3. getAudioTracks()
   4. getTrackById()
   5. getTracks()
   6. getVideoTracks()
   7. removeTrack()
6. Events
   1. addtrack
   2. removetrack
7. Inheritance
   1. EventTarget
8. Related pages for Media Capture and Streams
   1. CanvasCaptureMediaStreamTrack
   2. HTMLCanvasElement.captureStream()
   3. HTMLMediaElement.captureStream()
   4. InputDeviceInfo
   5. MediaDeviceInfo
   6. MediaDevices
   7. MediaStreamTrack
   8. MediaStreamTrackEvent
   9. MediaTrackConstraints
   10. MediaTrackSettings
   11. MediaTrackSupportedConstraints
   12. Navigator.mediaDevices
   13. OverconstrainedError
9. Guides
   1. Capabilities, constraints, and settings
   2. Taking still photos with getUserMedia()

• Syntax
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Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2017.

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The addTrack() method of the MediaStream interface adds a new track to the stream. The track is specified as a parameter of type MediaStreamTrack.

Note: If the specified track is already in the stream's track set, this method has no effect.

js

addTrack(track)

track

A MediaStreamTrack to add to the stream.

None (undefined).

• MediaStream, the interface it belongs to.

.

This page was last modified on Mar 11, 2025 by MDN contributors.

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