Network Working Group P. Hoschka INTERNET DRAFT April 1998 draft-hoschka-smil-media-type-00.txt W3C The application/smil Media Type Status of this Memo This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet- Drafts as reference material or to cite them other than as "work in progress." To view the entire list of current Internet-Drafts, please check the "1id-abstracts.txt" listing contained in the Internet-Drafts Shadow Directories on ftp.is.co.za (Africa), ftp.nordu.net (Northern Europe), ftp.nis.garr.it (Southern Europe), munnari.oz.au (Pacific Rim), ftp.ietf.org (US East Coast), or ftp.isi.edu (US West Coast). Copyright Notice Copyright (C) The Internet Society (1998). All Rights Reserved. Abstract This document specifies the Media Type of the Synchronized Multimedia Integration Language (SMIL 1.0, pronounced "smile"). SMIL allows integrating a set of independent multimedia objects into a synchronized multimedia presentation. 1. Introduction The World Wide Web Consortium has issued a Proposed Recommendation [1], which defines version 1 of the Synchronized Multimedia Integration Language. This memo provides information about the application/smil Media Type. 2. Synchronized Multimedia Integration Language SMIL allows integrating a set of independent multimedia objects into a synchronized multimedia presentation. Using SMIL, an author can 1.describe the temporal behavior of the presentation 2.describe the layout of the presentation on a screen 3.associate hyperlinks with media objects SMIL is defined using XML [2]. Expiration Date: October 1998 [Page 1] INTERNET DRAFT application/smil Media Type April 1998 3. Registration Information To: ietf-types@iana.org Subject: Registration of MIME media type application/smil MIME media type name: application MIME subtype name: smil Required parameters: charset smil is an XML-based language, and thus a character-based media type. The charset parameter is required, because the default character set for XML (UTF-8) differs from the default character set defined in RFC 2046 (US-ASCII). Optional parameters: none Encoding considerations: "quoted-printable" encoding is recommended for use with transports that are not 8-bit clean and smil documents that use a character set such as UTF-8 in which the majority of characters are US-ASCII. base64 or binary is recommended in all other cases. Security considerations: SMIL documents contain a construct that allows "infinite loops". This is indispensible for a multimedia format. However, SMIL clients should foresee provisions such as a "stop" button that lets users interrupt such an "infinite loop". As with HTML, SMIL documents contain links to other media (images, sounds, videos, text, ...) and those links are typically followed automatically by software, resulting Expiration Date: October 1998 [Page 2] INTERNET DRAFT application/smil Media Type April 1998 in the transfer of files without the explicit request of the user for each one. The security considerations of each linked file are those of the individual registered types. Interoperability considerations: SMIL documents contain links to other media objects. The SMIL player must be able to decode the media types of these media in order to display the whole document. To increase interoperability, SMIL has provisions for including alternate versions of a media object in a document. Published specification: see [1] Applications which use this media type: SMIL players Additional information: Magic number(s): none File extension(s): .smi, .smil Macintosh File Type Code(s): "TEXT" Object Identifier(s) or OID(s): none Person & email address to contact for further information: The author of this memo. Intended usage: COMMON Author/Change controller: 5. References [1] "Synchronized Multimedia Integration Language (SMIL) 1.0 Specification", Proposed Recommendation PR-smil-19980409, http://www.w3.org/TR/1998/PR-smil-19980409/, April 1998. [2] "Extensible Markup Language (XML) 1.0", W3C Recommendation REC-xml-19980210, http://www.w3.org/TR/REC-xml/, February 1998. Expiration Date: October 1998 [Page 3]
INTERNET DRAFT application/smil Media Type April 1998 6. Authors' Addresse Philipp Hoschka W3C/INRIA 2004, route des Lucioles - B.P. 93 06902 Sophia Antipolis Cedex FRANCE Phone: +33 (0)492387771 Fax: +33 (0)493657765 EMail: ph@w3.org Expiration Date: October 1998 [Page 4]
INTERNET DRAFT application/smil Media Type April 1998 7. Full Copyright Statement Copyright (C) The Internet Society (1998). All Rights Reserved. This document and translations of it may be copied and furnished to others, and derivative works that comment on or otherwise explain it or assist in its implmentation may be prepared, copied, published and distributed, in whole or in part, without restriction of any kind, provided that the above copyright notice and this paragraph are included on all such copies and derivative works. However, this document itself may not be modified in any way, such as by removing the copyright notice or references to the Internet Society or other Internet organizations, except as needed for the purpose of developing Internet standards in which case the procedures for copyrights defined in the Internet Standards process must be followed, or as required to translate it into languages other than English. The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."
