The application/smil and application/smil+xml Media Types
RFC 4536

Document Type RFC - Informational (July 2006; No errata)
Was draft-hoschka-smil-media-type (individual in app area)
Last updated 2013-03-02
Stream IETF
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Stream WG state (None)
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IESG IESG state RFC 4536 (Informational)
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Responsible AD Ted Hardie
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Network Working Group                                         P. Hoschka
Request for Comments: 4536                                           W3C
Category: Informational                                         May 2006

       The application/smil and application/smil+xml Media Types

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   This document specifies the media type for versions 1.0, 2.0, and 2.1
   of the Synchronized Multimedia Integration Language (SMIL 1.0, SMIL
   2.0, SMIL 2.1).  SMIL allows integration of a set of independent
   multimedia objects into a synchronized multimedia presentation.

1.  Introduction

   The World Wide Web Consortium (W3C) has issued specifications that
   define versions 1.0 [1], 2.0 [2] and 2.1 [3] of the Synchronized
   Multimedia Integration Language (SMIL).  This memo provides
   information about the application/smil and application/smil+xml media
   types.

   The definition is based on RFC 3023, which defines the use of the
   "application/xml" media type [4].  Before using the
   "application/smil" or "application/smil+xml" media type, implementors
   must thus be familiar with [4].

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, and
   4. define conditional content inclusion/exclusion based on
      system/network properties.

Hoschka                      Informational                      [Page 1]
RFC 4536       application/smil and application/smil+xml        May 2006

3.  Registration Information

3.1.  Registration of MIME media type application/smil

   MIME media type name: application

   MIME subtype name: smil

   Required parameters: none

   Optional parameters:

      charset

         Same as charset parameter considerations of application/xml in
         RFC 3023.

      profile

         See Section 5 of this document.

   Encoding considerations:

      Same as encoding considerations of application/xml in RFC 3023

   Security considerations: See Section 6, "Security Considerations", of
   this document.

   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], [2], and [3]

   Applications which use this media type:

      SMIL players and editors

Hoschka                      Informational                      [Page 2]
RFC 4536       application/smil and application/smil+xml        May 2006

   Additional information:

      Semantics of fragment identifiers in URIs: The SMIL media type
      allows a fragment identifier to be appended to a URI pointing to a
      SMIL resource (e.g., http://www.example.com/test.smil#foo).  The
      semantics of fragment identifiers for SMIL resources are defined
      in the SMIL specification.

   Magic number(s):

      There is no single initial byte sequence that is always present
      for SMIL files.  However, Section 4 of this document gives some
      guidelines for recognizing SMIL files.

   File extension(s): .smil, .smi, .sml

   NOTE: On the Windows operating system and the Macintosh platform, the
   ".smi" extension is used by other formats.  To avoid conflicts, it is
   thus recommended to use the extension ".smil" for storing SMIL files
   on these platforms.

   Macintosh File Type Code(s): "TEXT", ".SMI", "SMIL"

   Object Identifier(s) or OID(s): none

   Person & email address to contact for further information:

   The author of this memo.

   Intended usage: OBSOLETE

   Author/Change controller:

   The SMIL specification is a work product of the World Wide Web
   Consortium's SYMM Working Group.

   The W3C has change control over the specification.

Hoschka                      Informational                      [Page 3]
RFC 4536       application/smil and application/smil+xml        May 2006

3.2.  Registration of MIME media type application/smil+xml
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