CR: TTML Text and Image Profiles for Internet Media Subtitles and Captions 1.0

TTML Text and Image Profiles for Internet Media Subtitles and Captions 1.0

http://www.w3.org/TR/2015/CR-ttml-imsc1-20150519/

Abstract

This document specifies two profiles of [TTML1]: a text-only profile and an image-only profile. These profiles are intended to be used across subtitle and caption delivery applications worldwide, thereby simplifying interoperability, consistent rendering and conversion to other subtitling and captioning formats. The text profile is a superset of [ttml10-sdp-us].

The document defines extensions to [TTML1], as well as incorporates extensions specified in [ST2052-1] and [EBU-TT-D].

Both profiles are based on [SUBM].

Status of the Document

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at http://www.w3.org/TR/.

This document was published by the Timed Text Working Group as a Candidate Recommendation. This document is intended to become a W3C Recommendation. If you wish to make comments regarding this document, please send them to public-tt@w3.org (subscribe, archives) with [imsc] at the start of your email's subject. W3C publishes a Candidate Recommendation to indicate that the document is believed to be stable and to encourage implementation by the developer community. This Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than 16 June 2015. All comments are welcome.

Please see the Working Group's implementation report.

For this specification to exit the CR stage, at least 2 independent implementations of every feature defined in this specification but not already present in [TTML1] need to be documented in the implementation report. The implementation report is based on implementer-provided test results for the test suite (tests and sample content) maintained by the Working Group. The Working Group does not require that implementations are publicly available but encourages them to be so.

The Working Group expects the test suite and the implementation report to evolve significantly before the specification advances to Proposed Recommendation.

The Working Group has not identified features "at risk" for this specification.

Publication as a Candidate Recommendation does not imply endorsement by the W3C Membership. This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.

This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. W3C maintains a public list of any patent disclosures made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

This document is governed by the 1 August 2014 W3C Process Document.