track
The <strong>HTML <code><track></code> element</strong> is used as a child of the media elements <a title="The HTML <audio> element is used to embed sound content in documents. It may contain one or more audio sources, represented using the src attribute or the <source> element: the browser will choose the most suitable one. It can also be the destination for streamed media, using a MediaStream." href="/en-US/docs/Web/HTML/Element/audio"><code><audio></code></a> and <a title="Use the HTML <video> element to embed video content in a document." href="/en-US/docs/Web/HTML/Element/video"><code><video></code></a>. It lets you specify timed text tracks (or time-based data), for example to automatically handle subtitles. The tracks are formatted in <a href="/en-US/docs/Web/API/Web_Video_Text_Tracks_Format">WebVTT format</a> (<code>.vtt</code> files) — Web Video Text Tracks.