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Re: [DRAFT] Call for Wide Review of TTML2 WD for @@ Group

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>
Message-ID: <D5841D24.43C45%nigel.megitt@bbc.co.uk>
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.
>>



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Received on Thursday, 6 July 2017 16:11:17 UTC

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