March 13th, 2018
The Timed Text Working Group invites implementations of the Timed Text Markup Language 2 (TTML2) Candidate Recommendation. This document specifies the Timed Text Markup Language (TTML), Version 2, also known as TTML2, in terms of a vocabulary and semantics thereof.
The Timed Text Markup Language is a content type that represents timed text media for the purpose of interchange among authoring systems. Timed text is textual information that is intrinsically or extrinsically associated with timing information.