Timed Text Working Group Charter (TTWG)
This charter is written in accordance with section 4.2.2
of the W3C Process Document.
- The Timed Text Working Group is extended
until 30 November 2007 to enable the group to complete their test
suite, publish an implementation report, exit Candidate Recommendation
and reach W3C Recommendation.
- The Timed Text WG (TTWG) Charter is
extented until 30 April 2007. Scope and deliverables remain the same. The
Working Group still operates under Current Patent Practice, dated 24 January 2002.
- The Timed Text WG (TTWG) initial Charter
is extented until 31 december 2005. Scope and deliverables remain the
same. New milestones are available.
The Working Group still operates
under Current Patent Practice, dated 24 January 2002.
Table of Contents
- Mission Statement
- Scope and Deliverables
- Success Criteria
- Dependencies/Relationship with
other W3C Activities
- Coordination with External
- Membership, Participation and
- Communication, Meetings and
- Intellectual Property Rights (IPR)
- Existing Timed Text Documents
The mission of the Timed Text Working Group (TTWG) is to
develop an XML based format used for the representation of streamable text
synchronized with some other timed media, like audio and video. A typical
application is real time captioning of movies on the Web (e.g. integrated in
The scope of the TTWG includes:
- Develop a new Timed Text format that integrates well with other W3C
- Ensure the quality and interoperability of the new format
- Maintain a requirements document for the new format (what it should do
and not do)
At the time of writing this charter, a draft of these requirements is
- Maintain a list of existing formats in this field and how they
relate/differ from the new format being developed at W3C
- Coordinate with organizations developing those other formats to get
their input on the new format
- Coordinate with other W3C groups (e.g. HTML, SMIL, WAI, SVG, CSS)
developing technologies than can be used to implement Timed Text.
Deliverables of TTWG include:
- A Recommendation for a Timed Text format (including
WD, Last Call, CR, PR phases)
- A requirements document for the new format
- A "disposition of comments" document for Last Call comments
- A test suite for the new format
- A report on existing implementations at CR stage
- A summary of patent statements for Timed Text at CR stage.
This Working Group is scheduled to last for 24 months, from January 2003
through December 2004. This includes a six month "life after Recommendation"
The main criterion of success for TTWG is that:
- The Timed Text format becomes a W3C Recommendation in 2004
- The TTWG has achieved consensus in the industry on the relevance and
adoption of the new format.
A tentative schedule of face-to-face meetings and deliverables is
- January 2003
- TT WG starts
- February 2003
- Requirements document
- March 6-7th 2003
- First f2f meeting at W3C Technical Plenary March 3-7, Cambridge, MA
(meeting room not allocated yet)
- March 15 th 2003
- First Working Draft with one or more strawman proposals
Provide an initial summary of patent statements for Timed Text.
- June 2003
- Second f2f meeting
- October 2003
- Third f2f meeting
- December 2003
- Last Call Working Draft of Timed Text format
- January 2004
- Fourth f2f meeting
- February 2004
- Create "disposition of comments" document for Last Call comments
Provide a final summary of patent statements for Timed Text.
- March 2004:
- Advance Timed Text to W3C Candidate Recommendation
- April 2004
- Fifth f2f meeting
- May 2004
- Provide a Test suite for the Timed Text format
- June 2004
- Interoperability testing of implementations with the Test suite
- June 2004
- Timed Text moves to W3C Proposed Recommendation
- July 2004
- Timed Text becomes a W3C Recommendation
Life after Recommendation phase starts
- December 31st 2004
- TT WG ends
Note that public working drafts will be made available at least once every
three months, per W3C
The Working Group has to take into account technologies developed by other
groups within W3C, and advises about the requirements for Timed Text and ask
them to review specifications prepared by the Working Group. At the time the
charter was written, the following ongoing W3C activities are concerned:
- Hypertext Coordination Group
- The Hypertext Coordination Group has the responsibility for ensuring
that reviews between Working Groups are planned and carried out so as
to meet requirements for deliverables and deadlines. The Hypertext
Coordination Group includes representatives for the XML Coordination
Group and for the Web Accessibility Initiative, as well as the Working
Groups in the Document Formats Domain and Interaction Domain
- HTML Working Group
- The Working Group cooperates with the HTML Working Group to ensure a
smooth transition to next generation Timed Text, since HTML is a
possible building block for Timed-Text.
- CSS Working Group.
- The work of the Working Group coordinates with this group on
presentation and layout issues.
- Web Accessibility
- The Working Group cooperates with the Web Accessibility Initiative
(WAI) to ensure Timed-Text meets W3C accessibility goals
- Scalable Vector Graphics Working Group
- The Working Group cooperates with this group to ensure that Timed
Text can be seamlessly integrated with the scalable vector graphics
capabilities being developed by this group, since SVG is a possible
building block for Timed Text.
Independence Working Group
- The Working Group cooperates with this group to ensure that Timed
Text meets the requirements for device independent access, e..g. to
ensure that the format is usable both on mobile devices and PCs.
- Synchronized Multimedia Interest Group
- The Working Group coordinates with this group to ensure that Timed
Text meets the requirements of timing and integration in interactive
multimedia presentations. SMIL is a building block for Timed Text.
- Internationalization Working Group
- The Working Group cooperates with this group to ensure Timed Text
provides effective support for internationalization.
- QA Working
- The Working Group coordinates with the QA WG to develop test
- TAG Working
- The Working Group ensures that Timed Text meets the general Web
architecture of the TAG and helps coordinate cross-technology
architecture developments inside and outside W3C.
Outside W3C, a number of groups are working technologies relevant for the
Timed Text WG.
Given the extensive existing body of work on Timed Text formats in other
bodies, the WG should make an explicit effort to harmonize with one or more
existing approaches. If possible, the WG should focus on the development of
an XML-based representation that includes concepts of these approaches, since
this is the "missing piece" in the standards that are available today.
To become a member of the Timed Text Working Group, a
representative of a W3C Member organization must be nominated by their
Advisory Committee Representative (please send email to the Working Group
chair and the W3C team contact). The nomination must include explicit
agreement to this charter, including its goals, a Patent disclosure and the
level of effort required of the representative.
Membership is also open to invited experts from the
community, selected by the chair in order to balance the technical experience
of the group. Invited experts participate as principal members.
Participation is expected to consume at least one day
per week of each Working Group member's time.
The TTWG is chaired by Glenn A. Adams
The W3C team contact is Thierry
The W3C team is responsible for the mailing lists,
public Working Group pages, for the posting of meeting minutes, and for
liaison with the W3C communications staff for the publication of working
drafts. W3C team members are expected to adopt the same requirements for
meeting attendance, timely response and information disclosure as are
required of W3C Members.
The W3C team contact is expected to devote 20% of his time to this Working
9.1 Email Communication
The Working Group utilizes a member-confidential mailing
list <firstname.lastname@example.org>, and a
public mailing list <email@example.com>. The public mailing
list, with its wider audience, exists to promote openness and
interoperability, and is the preferred channel of communication.
The Working Group has a home page that records the
history of the group, provides access to the archives, meeting minutes,
updated schedule of deliverables, membership list, and relevant documents and
resources. The page is available to the public and is maintained by the Chair
in collaboration with the W3C team contact.
A one to two hour Working Group phone conference is held
every week. When necessary to meet agreed-upon deadlines, phone conferences
may be held twice a week. The Chair may, at his discretion, invites guest
experts to attend particular phone conferences.
Meeting records should be made available within three
days of each telephone meeting. Meeting records must be made publicly
available except for non-technical issues that do not directly affect the
output of the Working Group. The Chair decides which issues are not made
Participation in face-to-face meetings is limited to
Timed Text Working Group members and observers invited by the Chair.
Decisions may be taken in face-to-face meetings but must be announced on the
Working Group mailing list. Observers may take part in decision-making at the
discretion of the Chair.
The Chair makes Working Group meeting dates and
locations available to the group at least eight weeks before the meeting, per
W3C promotes an open working environment. Whenever possible, technical
decisions should be made unencumbered by intellectual property right (IPR)
This is a Royalty Free Working Group, as described in W3C's Current Patent
Practice, dated 24 January 2002.
Working Group participants disclose patent claims by sending email to firstname.lastname@example.org; please see Current Patent
Practice for more information about disclosures.
- Initial Timed-Text
Requirements Draft (edited by the Timed-Text Task force)
- This document sets out the requirements for a Timed-Text format.
Thierry Michel <email@example.com> (last modified
on $Date: 2007/05/30 07:33:07 $)
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