The read-only AudioTrack property language returns a string identifying the language used in the audio track. For tracks that include multiple languages (such as a movie in English in which a few lines are spoken in other languages), this should be the video's primary language.


var audioTrackLanguage = AudioTrack.language;


A DOMString specifying the BCP 47 (RFC 5646) format language tag of the primary language used in the audio track, or an empty string ("") if the language is not specified or known, or if the track doesn't contain speech.

For example, if the primary language used in the track is United States English, this value would be "en-US". For Brazilian Portuguese, the value would be "pt-BR".


This example locates all of a media element's primary language and translated audio tracks and returns a list of objects containing each of those tracks' id, kind, and language.

This could then be used to build a user interface for selecting the language the user would like to listen to while watching a movie, for example.

function getAvailableLanguages(el) {
  var trackList = [];
  const wantedKinds = [
    "main", "translation"

  el.audioTracks.forEach(function(track) {
    if (wantedKinds.includes(track.kind)) {
        kind: track.kind,
        language: track.language
  return trackList;


Specification Status Comment
HTML Living Standard
The definition of 'AudioTrack.language' in that specification.
Living Standard  
The definition of 'AudioTrack.language' in that specification.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
languageChrome ? Edge Full support 12Firefox ? IE ? Opera ? Safari Full support YesWebView Android ? Chrome Android ? Firefox Android ? Opera Android ? Safari iOS Full support YesSamsung Internet Android ?


Full support  
Full support
Compatibility unknown  
Compatibility unknown