Module track 

Attribute names for track (<track>) elements.

Purpose

The <track> element provides timed text tracks (like subtitles, captions, or chapters) for <audio> and <video> elements, improving accessibility and user experience.

Common Attributes

• src: URL of the track file (WebVTT format)
• kind: Type of track (subtitles, captions, descriptions, chapters, metadata)
• srclang: Language of the track text
• label: User-visible label for the track
• default: Marks this track as default

Example

<video src="movie.mp4" controls>
  <track kind="subtitles" src="en.vtt" srclang="en" label="English" default>
  <track kind="subtitles" src="es.vtt" srclang="es" label="Español">
  <track kind="captions" src="en-cc.vtt" srclang="en" label="English CC">
  <track kind="chapters" src="chapters.vtt" srclang="en">
</video>

WHATWG Specification

• The track element

Constants

DEFAULT

The default attribute.

KIND

The kind attribute.

LABEL

The label attribute.

SRC

The src attribute.

SRCLANG

The srclang attribute.