How to programmatically enable or disable audio tracks on Web
This article describes how you can use the AudioTrack API, a sub-API of the MediaTrack API, to enable or disable audio tracks. Implementing this functionality is a common use-case for developers who want to build their own UI to toggle audio languages on and off.
Once you have programmatically selected a track, you can set its enabled property (or method) to true or false.
Because only one audio track can play at a time, enabling an audio track automatically disables all other audio tracks.
Note that this does not apply to text tracks: multiple text tracks can be active at the same time.
Usage
The Web SDK exposes the audio tracks through player.audioTracks,
which contains MediaTrack objects with an
enabled property.
// enable a specific audio track
player.audioTracks[indexOfRequestedAudioTrack].enabled = true;