How to programmatically detect audio tracks

This article describes how you can use the API to detect audio tracks.

The AudioTrack API, which is a sub-API of the MediaTrack API, can be used to implement this functionality. Implementing this functionality is a common use-case for developers who want to build their own UI to visualize the available audio languages.

Table of Contents

• SDKs
• Code examples
• Remarks
• Related articles

SDKs

Code examples

The code examples below how to implement the detection of audio tracks across SDK.

Web SDK

The Web SDK leverages the MediaTrack API.

function handleAddTrackEvent(addTrackEvent) {
    var audioTrack = addTrackEvent.track;
}
player.audioTracks.addEventListener('addtrack', handleAddTrackEvent);

Android (TV) SDK

The Android SDK leverages the MediaTrack API.

EventListener<AddTrackEvent> handleAddTrackEvent= new EventListener<AddTrackEvent>() {
    @Override
    public void handleEvent(AddTrackEvent addTrackEvent) {
        MediaTrack audioTrack = addTrackEvent.getTrack();
    }
};
tpv.getPlayer().getAudioTracks().addEventListener(AudioTrackListEventTypes.ADDTRACK, handleAddTrackEvent);

iOS (/tvOS) SDK

The iOS SDK leverages the MediaTrack API.

func handleAddTrackEvent(addTrackEvent : AddTrackEvent) {
    var audioTrack = addTrackEvent .track
}
self.theoplayer.audioTracks.addEventListener(type: AudioTrackListEventTypes.ADD_TRACK, listener: handleAddTrackEvent)

Remarks

• A related article on building a Chromeless UI is located at How to build a Chromeless UI.

Related articles

• How to programmatically detect video track qualities
• How to programmatically detect video track quality changes
• How to programmatically enable or disable audio tracks
• How to programmatically select a video track quality