W3C’s Internet Media Subtitles and Captions 1.0 (IMSC1) is new global standard
MovieLabs is very pleased to support the publication of the IMSC1 caption standard. Our thanks to Pierre-Anthony Lemieux for moving this forward. “Starting with the foundational TTML1 and now with IMSC1 and TTML2, the TTML family of standards gives the industry a common target for worldwide authoring and distribution of subtitles and captions, which greatly facilitates implementation and improves fidelity of experience across borders." Jim Helman, MovieLabs CTO.
For the complete press release, see here