Standards
Standards

Understand the various specifications, their maturity levels on the web standards track, and their adoption.
Explore web standards
Groups
Groups

A variety of groups develop Web Standards, guidelines, or supporting materials.
About W3C groups
Get involved
Get involved

W3C works at the nexus of core technology, industry needs, and societal needs.
Find ways to get involved
Resources
Resources

Master Web fundamentals, use our developer tools, or contribute code.
Learn from W3C resources
News & events
News & events

Recent content across news, blogs, press releases, media; upcoming events.
Follow news & events
About
About

Understand our values and principles, learn our history, look into our policies, meet our people.
Find out more about us
Search
My account

Group Note: DAPT Requirements

Author(s) and publish date

Published:: 8 May 2025

The Timed Text Working Group has published the DAPT Requirements as a Group Note. The document captures technical requirements for a profile of TTML2 for use in workflows related to dubbing and audio description of movies and videos, known as the Dubbing and Audio description Profile of TTML2 (DAPT).

The DAPT Requirements were previously published as a Draft Note in May 2022 and updated in October 2022.

Related RSS feed

Subscribe to our news feed