TimedText/Publications

Ongoing Publications

Specifications
Name of Spec (Editor's Draft) Active Editors	Last Publication	Type	Tracker	Remarks	Implementations	Plans
Dubbing and Audio description Profile of TTML2 (DAPT) Cyril Concolato, Nigel Megitt	2024-11-14	WD	issues		DAPT Implementation Report	Rec track
Audio Description Profile of TTML2 (ADPT) Nigel Megitt		ED	issues			Superseded by DAPT
TTML CJK Extension Module 1 Glenn Adams		ED	issues			Rec Track (not yet started)
TTML CSS Extension Module		ED	issues			Rec Track (not yet started)
TTML Karaoke Extension Module Cyril Concolato		ED	issues			Rec Track
TTML Live Extension Module 1 Nigel Megitt		ED	issues			Rec Track
TTML Live Carriage over WebSocket Nigel Megitt		ED	issues			Rec Track
TTML VR Extension Module Andreas Tai		ED	issues			Rec Track (not yet started)
Timed Text Markup Language 2 (TTML2) Glenn Adams	08 Nov 2018	Recommendation	issues	implementation google docs sheet	TTML2 implementation report	completed
Timed Text Markup Language 1 (TTML1) (Third Edition) Glenn Adams Pierre-Anthony Lemieux	08 Nov 2018	Recommendation	issues	First edition REC (18 November 2010) Second edition REC (24 September 2013)	TTML 1.0 implementation report	completed
TTML Text and Image Profiles for Internet Media Subtitles and Captions 1.1 (IMSC 1.1) Version 1.1 Pierre Lemieux	08 Nov 2018	Recommendation	issues	Superset of IMSC 1.0 Based on TTML 2	IMSC1.1 Implementation Report	completed
TTML Text and Image Profiles for Internet Media Subtitles and Captions (IMSC) Version 1.0.1 Pierre Lemieux	24 April 2018	Recommendation	errata		IMSC1.0.1 Implementation Report	completed
TTML Text and Image Profiles for Internet Media Subtitles and Captions (IMSC) Version 1.0 Pierre Lemieux	21 April 2016	Recommendation (Superseded by IMSC 1.0.1 REC	issues Comments tracker IMSC1-implementation Questionnaire	W3C Member Submission (07 June 2013) Based on TTML 1SE	IMSC1 test suite and implementations page, IMSC1 additional tests	Superseded by IMSC 1.0.1 Recommendation
TTML Profiles for Internet Media Subtitles and Captions 1.2 Pierre Lemieux	4 August 2020	Recommendation	issues		IMSC 1.2 implementation report	Completed
Timed Text Markup Language 2 (TTML2) (2nd Edition) Glenn Adams, Cyril Concolato	9 March 2021	Candidate Recommendation	issues	TTML 2 (1st Edition)	TTML2 Second Edition Implementation Report	Goal is to publish a REC
WebVTT: The Web Video Text Tracks Format Silvia Pfeiffer	04 April 2019	CR	issues		test suite, WebVTT Implementation Report	Goal is to publish a REC
TTML Live Extensions Guide Nigel Megitt		ED	issues			Goal is to publish a WG Note
DAPT Requirements Cyril Concolato, Nigel Megitt		ED	issues			Goal is to publish a WG Note
IMSC1.1 Requirements Pierre Lemieux	25 Sept 2018	WG NOTE				Completed as WG NOTE
Using the ITU BT.2100 PQ EOTF with the PNG Format Pierre Lemieux	11 Sept 2017	WG NOTE	issues			Completed as WG NOTE
TTML Simple Delivery Profile for Closed Captions (US) Glenn Adams, Monica Martin, Sean Hayes	5 Feb 2013	WG NOTE	tracker			Completed as WG NOTE
Timed Text (TT) Authoring Format 1.0 Use Cases and Requirements Glenn Adams	27 April 2006	WG NOTE				Completed as WG NOTE
TTML/WebVTT mapping Courtney Kennedy, Andreas Tai,	N/A		issues on github			Goal is to publish a Working Group NOTE
TTML Profiles Registry	17 January 2017	WG NOTE	github repo			Updates for new profiles etc and edits as needed (ongoing)
TTML Role Registry	wiki page	Wiki publication	[1]			Goal is to publish a Working Group NOTE
TTML Profiles and versions Recommendations summary	N/A	N/A	tracker	Snapshot of work in progress		Goal is to publish a Working Group NOTE
TTML API Level 1 Glenn Adams	N/A	Editor's Draft (19 November 2013)

Draft Community Group Report

Specifications
Name of Spec Editors	Type	Remarks
captions to WebVTT, Silvia Pfeiffer.	Draft Community Group Report (22 September 2014).

Timeline of TTML2, TTML1 and IMSC1.1 work

Detailled Timeline for TTML1 3ER Ed, TTML2 and IMSC1.1 to REC