- From: Nigel Megitt <nigel.megitt@bbc.co.uk>
- Date: Thu, 6 Jul 2017 16:10:46 +0000
- To: W3C Public TTWG <public-tt@w3.org>
- CC: Thierry MICHEL <tmichel@w3.org>
Applying the summary of changes emailed previously, with some minor edits to reflect recent changes, gives the following, for review please: [[ Dear @@@ Group, The W3C Timed Text Working Group has recently published a new working draft of the Timed Text Markup Language 2 (TTML2). https://www.w3.org/TR/2017/WD-ttml2-20170630/ TTML2, provides a standardized representation of a particular subset of textual information with which stylistic, layout, and timing semantics are associated by an author or an authoring system for the purpose of interchange and processing. In addition to being used for interchange among legacy distribution content formats, TTML Content may be used directly as a distribution format, providing, for example, a standard content format to reference from a <track> element in an HTML5 document, or a <text> or <textstream> media element in a [SMIL 3.0] document. The TTML2 specification updates the TTML1 specification by adding vocabulary and semantics to address more of its core requirements. In summary it supports continuous animation of styling and positioning, dereferencing and use of embedded or externally located resources such as images, fonts, and audio, a more easily extensible metadata mechanism, the ability to specify alternate initial values for styling, a more useful profile mechanism, a conditional processing mechanism and a serialisation format for resolved temporal subsections (intermediate synchronic documents). The styling vocabulary has been increased to support advanced text layout requirements such as Ruby, text emphasis, images, backgrounds and shadows. An audio processing model has been Introduced with basic audio mixing and text to speech support including gain, pan, pitch and speak (rate) based on Web Audio and SSML. At a functional level this means that TTML2 supports text layout requirements for (almost) every script globally, is more fit for purpose in terms of profiling and use by other downstream systems, supports audio (video) description workflows and allows for more predictable rendering by means of referencing specific fonts to use. Conditional processing, such as semantic or transformation processing, based on parameters, media queries, language selection etc are now also possible. Several semantics defined non-normatively in TTML1 have been promoted to being normative. All TTML1 documents are valid TTML2 documents; however, TTML2 documents that specify Version 2, may not be valid TTML1 documents. Where there is feature overlap between deprecated and new features, such as tts:origin and tts:position, precedence rules are defined. Where appropriate, references have been updated, including normative references. The TTWG invites you to review this draft, and requests comments to be received by 30 Sept 2017. These comments will be used to fulfil the W3C Process [3] requirement for Wide Review of drafts, and Horizontal Review [4] prior to publication as Candidate Recommendation. If you wish to make comments regarding this document, please send them to public-tt@w3.org <mailto:public-tt@w3.org?subject=%5Bttml%5B> with [ttml2] at the start of your email's subject. All comments are welcome, however the scope of review will be mainly focused on the new features introduced in TTML2. A cumulative summary of all changes applied to this version since the current (TTML1, 2nd Edition) Recommendation was published is available for your convenience [5]. [1] TTML2 latest version https://www.w3.org/TR/ttml2/ [2] TTML1 Recommendation https://www.w3.org/TR/ttml1/ [3] W3C Process https://www.w3.org/2017/Process-20170301/ [4] Horizontal Review https://www.w3.org/Guide/Charter.html#horizontal-review [5] https://www.w3.org/TR/2017/WD-ttml2-20170630/ttml2-changes.html Kind regards, On behalf of Nigel Megitt, co-Chair, W3C Timed Text Working Group Thierry Michel, Staff Contact for TTWG. ]] On 06/07/2017, 15:01, "Thierry MICHEL" <tmichel@w3.org> wrote: >resending with proper title TTML2 > >Le 06/07/2017 à 11:54, Thierry MICHEL a écrit : >> >> Dear @@@ Group, >> >> The W3C Timed Text Working Group has recently published a new working >> draft of the Timed Text Markup Language 2 (TTML2). >> >> https://www.w3.org/TR/2017/WD-ttml2-20170630/ >> >> TTML2, provides a standardized representation of a particular subset of >> textual information with which stylistic, layout, and timing semantics >> are associated by an author or an authoring system for the purpose of >> interchange and processing. >> In addition to being used for interchange among legacy distribution >> content formats, TTML Content may be used directly as a distribution >> format, providing, for example, a standard content format to reference >> from a <track> element in an HTML5 document, or a <text> or <textstream> >> media element in a [SMIL 3.0] document. >> >> The TTWG invites you to review this draft, and requests comments to be >> received by 30 Sept 2017. These comments will be used to fulfil the >> W3C Process [3] requirement for Wide Review of drafts, and Horizontal >> Review [4] prior to publication as Candidate Recommendation. >> >> If you wish to make comments regarding this document, please send them >> to public-tt@w3.org <mailto:public-tt@w3.org with [ttml2] at the start >> of your email's subject. All comments are welcome, however the scope of >> review will be mainly focused on the new features introduced in TTML2. >> >> A cumulative summary of all changes applied to this version since the >> current (TTML1, 2nd Edition) Recommendation was published is available >> for your convinience [5]. >> >> >> [1] TTML2 latest version https://www.w3.org/TR/ttml2/ >> [2] TTML1 Recommendation https://www.w3.org/TR/ttml1/ >> [3] W3C Process https://www.w3.org/2017/Process-20170301/ >> [4] Horizontal Review >> https://www.w3.org/Guide/Charter.html#horizontal-review >> [5] https://www.w3.org/TR/2017/WD-ttml2-20170630/ttml2-changes.html >> >> Kind regards, >> >> On behalf of Nigel Megitt, co-Chair, W3C Timed Text Working Group >> Thierry Michel, Staff Contact for TTWG. >> ----------------------------- http://www.bbc.co.uk This e-mail (and any attachments) is confidential and may contain personal views which are not the views of the BBC unless specifically stated. If you have received it in error, please delete it from your system. Do not use, copy or disclose the information in any way nor act in reliance on it and notify the sender immediately. Please note that the BBC monitors e-mails sent or received. Further communication will signify your consent to this. -----------------------------
Received on Thursday, 6 July 2017 16:11:17 UTC