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Synchronized Multimedia Integration Language (SMIL 2.1)

W3C Candidate Recommendation 13 May 2005

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Dick Bulterman, CWI - Guido Grassel, Nokia - Jack Jansen, CWI - Antti Koivisto, Nokia - Nabil Layaïda, INRIA - Thierry Michel, W3C - Sjoerd Mullender, CWI - Daniel Zucker, Access Co., Ltd.

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This document specifies the second version of the Synchronized Multimedia Integration Language (SMIL, pronounced "smile"). SMIL 2.1 has the following design goals:

Status of this 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

This is a W3C Candidate Recommendation of the Synchronized Multimedia Integration Language (SMIL) 2.1.
This document is based upon the SMIL 2.1 Last Call Working Draft published on 01 February 2005. The current draft contains editorial improvements, and minor bug fixes in response to Last Call comments. The significant changes in this draft are:

Please send review comments about this Candidate Recommendation to the public mailing list [archives], including the prefix'[SMIL21 CR comment]' in the subject line. We expect that sufficient feedback to determine its future will have been received by 15 June 2005.

The SYMM Working Group will advance the specification to Proposed Recommendation when the following exit criteria have been met:

Any feedback on implementation and use of this specification would be very welcome. To the extent possible, please provide a separate email message for each distinct comment.

This document has been produced by the SYMM Working Group as part of the W3C Synchronized Multimedia Activity, following the procedures set out for the W3C Process. The goals of the SYMM Working Group are discussed in the SYMM Working Group Charter.

In line with its charter the SYMM WG has organized this specification as a collection of changes-only documents for Candidate Recommendation. The SYMM WG will publish a full SMIL 2.1 document (including SMIL 2.0 former modules and SMIL 2.1 new modules) for Proposed Recommendation.

The patent policy for this document is the 5 February 2004 W3C Patent Policy. Patent disclosures relevant to this specification may be found on the SYMM Working Group's patent disclosure page. An individual who has actual knowledge of a patent which the individual believes contains Essential Claim(s) with respect to this specification should disclose the information in accordance with section 6 of the W3C Patent Policy.

The authors of this document are the SYMM Working Group members. Different parts of the document have different editors.

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.

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