copyAudioTracks

copyAudioTracks(sourceStream, destinationStream) replaces the destination's audio tracks with clones of the source's. The destination's existing audio tracks are removed first (via removeAudioTracks), so calling it twice doesn't accumulate tracks. For video use copyVideoTracks. Part of pota/use/stream.

Arguments

Argument	Type	Description
sourceStream	MediaStream	Stream whose audio tracks are cloned.
destinationStream	MediaStream	Stream that receives the cloned tracks.

Returns: nothing — it mutates destinationStream in place.

Examples

Swap in a microphone

Capture a microphone and copy its audio onto a destination stream, leaving any existing video tracks on the destination untouched.

import { copyAudioTracks } from 'pota/use/stream'

const mic = await navigator.mediaDevices.getUserMedia({
	audio: true,
})

const output = new MediaStream()
copyAudioTracks(mic, output)