A Uniform Resource Name (URN) Namespace for the Motion Picture Experts Group (MPEG)
RFC 3614

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Network Working Group                                           J. Smith
Request for Comments: 3614              IBM T. J. Watson Research Center
Category: Informational                                   September 2003

            A Uniform Resource Name (URN) Namespace for the
                  Motion Picture Experts Group (MPEG)

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 (2003).  All Rights Reserved.

Abstract

   This document describes a Uniform Resource Name (URN) namespace for
   the Motion Picture Experts Group (MPEG) for naming persistent
   resources as part of the MPEG standards.  Example resources include
   technical documents and specifications, eXtensible Markup Language
   (XML) Schemas, classification schemes, XML Document Type Definitions
   (DTDs), namespaces, style sheets, media assets, and other types of
   resources produced or managed by MPEG.

1.  Introduction

   MPEG is a working group of the International Organization for
   Standardization (ISO) and International Engineering Consortium (IEC)
   in charge of the development of standards for coded representation of
   digital audio and video.  MPEG has produced MPEG-1, the standard on
   which such products as Video CD and MP3 are based, MPEG-2, the
   standard on which such products as Digital Television set top boxes
   and DVD are based, MPEG-4, the standard for multimedia for the fixed
   and mobile web, and MPEG-7, "Multimedia Content Description
   Interface", the standard for description and search of audio and
   visual content. Work on MPEG-21, "Multimedia Framework" is currently
   underway.

   MPEG would like to assign unique, permanent, location-independent
   names based on URNs for some resources it produces or manages.

   This namespace specification is for a formal namespace.

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RFC 3614                 URN Namespace for MPEG           September 2003

2.  Specification Template

   Namespace ID:

      "mpeg"

   Registration Information:

      Version: 1
      Date: 2001-11-20

   Declared registrant of the namespace:

      Name:           John R. Smith
      Title:          Chair, MPEG MDS Subgroup
      Affiliation:    IBM T. J. Watson Research Center
      Address:        30 Saw Mill River Road
                      Hawthorne, NY 10532 USA
      Phone:          +1 (914) 784-7320
      Email:          jrsmith@watson.ibm.com

   Declaration of structure:

      URNs assigned by MPEG will have the following hierarchical
      structure based on the organizational structure of the MPEG
      standards:

         urn:mpeg:{standard name}:{assigned US-ASCII string}

      where "{standard name}" is a US-ASCII string that conforms to URN
      Syntax requirements ([RFC2141]) and corresponds to the name of an
      MPEG standard (such as "mpeg1", "mpeg2", "mpeg4", "mpeg7",
      "mpeg21", and

      "{assigned US-ASCII string}" is a US-ASCII string that conforms to
      URN Syntax requirements ([RFC2141]).

      The individual URNs shall be assigned by MPEG through the process
      of development of MPEG standards.

   Relevant ancillary documentation:

      None

   Identifier uniqueness considerations:

      MPEG shall establish unique identifiers as appropriate.

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RFC 3614                 URN Namespace for MPEG           September 2003

      Uniqueness is guaranteed as long as the assigned string is never
      reassigned for a given standard name and that the standard name is
      never reassigned.

   Identifier persistence considerations:

      MPEG is committed to maintaining the accessibility and persistence
      of all resources that are officially assigned URNs by the
      organization.

      Persistence of identifiers is dependent upon suitable delegation
      of resolution at the level of "standard name"(s), and persistence
      of standard name assignment.

   Process of identifier assignment:

      Assignment is limited to the owner and those authorities that are
      specifically designated by the owner.  MPEG may designate portions
      of its namespace for assignment by other parties.

   Process of identifier resolution:

      The owner will develop and maintain "URN catalogs" that map all
      assigned URNs to Uniform Resource Locators (URLs) specifically to
      enable Web-based resolution of named resources.  In the future an
      interactive online resolution system may be developed to automate
      this process.

      The owner will authorize additional resolution services as
      appropriate.

   Rules for Lexical Equivalence:

      The "standard name" is case-insensitive.  Thus, the portion of the
      URN:

         urn:mpeg:{standard name}: