The Timed Text Working Group invites implementations of WebVTT: The Web Video Text Tracks Format Candidate Recommendation. This specification defines WebVTT, the Web Video Text Tracks format. Its main use is for marking up external text track resources in connection with the HTML element. WebVTT files provide captions or subtitles for video content, and also text video descriptions [MAUR], chapters for content navigation, and more generally any form of metadata that is time-aligned with audio or video content.
This specification is based on the Draft Community Group Report of the Web Media Text Tracks Community Group.