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IMSC 1.1, TTML2, TTML1 3rd Edition now PRs

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Fri, 12 Oct 2018 15:04:03 +0000
To: "public-web-and-tv@w3.org" <public-web-and-tv@w3.org>
Message-ID: <D7E6766A.6A5E0%nigel.megitt@bbc.co.uk>
Media and Entertainment IG members,

You may be interested to know that the Timed Text Working Group recently published<https://www.w3.org/blog/news/archives/7344> Proposed Recommendations of three related specifications:

TTML1 3rd Edition<https://www.w3.org/TR/2018/PR-ttml1-20181004/> is an update to TTML1 that clarifies some previously unclear semantics and includes errata since the previous version.

TTML2<https://www.w3.org/TR/2018/PR-ttml2-20181004/> incorporates many new features relative to TTML1, including:

  *   expanded I18N support, particularly for vertical writing systems, and including ruby and text emphasis support for example for Japanese;
  *   embedded/referenced images, audio, fonts
  *   audio presentation support, for example to support mixing of audio description audio, and text to speech
  *   enhanced animation support (continuous animation rather than discrete animation)
  *   conditionalization, for example to support media queries.

IMSC 1.1<https://www.w3.org/TR/2018/PR-ttml-imsc1.1-20181004/> adds some of these features, relative to IMSC 1.0.1, to enhance the global applicability for subtitles and captions presentation, while retaining backwards compatibility with IMSC 1.0.1 (i.e. an IMSC 1.1 processor can process an IMSC 1.0.1 document with the same output).

A WBS poll is currently open for each of these three specifications for W3C member organisations to vote via their AC representatives on progressing these specifications; I would encourage all interested member organisations to participate in those polls, which are linked to from the specifications themselves and can be found by AC reps at https://www.w3.org/2002/09/wbs/myQuestionnaires when they are logged in.

Kind regards,


Chair, TTWG



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Received on Friday, 12 October 2018 15:04:28 UTC

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