MPEG-21

The MPEG-21 standard, from the Moving Picture Experts Group, aims at defining an open framework for multimedia applications. MPEG-21 is ratified in the standards ISO/IEC 21000 - Multimedia framework (MPEG-21).[1][2][3][4][5][6]

MPEG-21 is based on two essential concepts:

  • definition of a Digital Item (a fundamental unit of distribution and transaction)
  • users interacting with Digital Items

Digital Items can be considered the kernel of the Multimedia Framework and the users can be considered as who interacts with them inside the Multimedia Framework. At its most basic level, MPEG-21 provides a framework in which one user interacts with another one, and the object of that interaction is a Digital Item. Due to that, we could say that the main objective of the MPEG-21 is to define the technology needed to support users to exchange, access, consume, trade or manipulate Digital Items in an efficient and transparent way.

MPEG-21 Part 9: File Format defined the storage of an MPEG-21 Digital Item in a file format based on the ISO base media file format, with some or all of Digital Item's ancillary data (such as movies, images or other non-XML data) within the same file.[7] It uses filename extensions .m21 or .mp21 and MIME type application/mp21.[8]

Contents

Digital Rights Management

MPEG-21 defines also a "Rights Expression Language" standard as means of managing restrictions for digital content usage. As an XML-based standard, MPEG-21 is designed to communicate machine-readable license information and do so in a "ubiquitous, unambiguous and secure" manner.

Among the aspirations for this standard that the industry hopes will put an end to file sharing is that it will constitute: "A normative open framework for multimedia delivery and consumption for use by all the players in the delivery and consumption chain. This open framework will provide content creators, producers, distributors and service providers with equal opportunities in the MPEG-21 enabled open market."[citation needed]

See also

References

  1. ^ ISO. "ISO/IEC TR 21000-1:2001 - Information technology -- Multimedia framework (MPEG-21) -- Part 1: Vision, Technologies and Strategy". http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?csnumber=30819. Retrieved 2009-10-31. 
  2. ^ ISO. "ISO/IEC 21000-2:2003 - Information technology -- Multimedia framework (MPEG-21) -- Part 2: Digital Item Declaration". http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?csnumber=35366. Retrieved 2009-10-31. 
  3. ^ ISO. "ISO/IEC 21000-3:2003 - Information technology -- Multimedia framework (MPEG-21) -- Part 3: Digital Item Identification". http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=35367. Retrieved 2009-10-31. 
  4. ^ MPEG. "About MPEG - Achievements". chiariglione.org. http://mpeg.chiariglione.org/achievements.htm. Retrieved 2009-10-31. 
  5. ^ MPEG. "Terms of Reference". chiariglione.org. http://mpeg.chiariglione.org/terms_of_reference.htm. Retrieved 2009-10-31. 
  6. ^ MPEG. "MPEG standards". chiariglione.org. http://mpeg.chiariglione.org/standards.htm. Retrieved 2009-10-31. 
  7. ^ ISO (2006). "MPEG-21 File Format white paper - Proposal". chiariglione.org. http://mpeg.chiariglione.org/technologies/mpeg-21/mp21-ff/index.htm. Retrieved 2010-08-20. 
  8. ^ ISO/IEC 21000-9 First edition, 2005-07-01, AMENDMENT 1 2008-10-01, Information technology — Multimedia framework (MPEG-21) — Part 9: File Format AMENDMENT 1: MIME type registration, http://standards.iso.org/ittf/PubliclyAvailableStandards/c050551_ISOIEC_21009_2005_Amd_2008_Annex_D.pdf, retrieved 2010-08-20 

Further reading

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Mpeg-21 — est l acronyme d une norme internationale ISO/CEI développée par MPEG dont l ambition est de spécifier une architecture permettant l interopérabilité et l utilisation transparente des représentations audiovisuelles numériques (multimédia). L… …   Wikipédia en Français

  • MPEG-21 — est l acronyme d une norme internationale ISO/CEI développée par MPEG dont l ambition est de spécifier une architecture permettant l interopérabilité et l utilisation transparente des représentations audiovisuelles numériques (multimédia). L… …   Wikipédia en Français

  • MPEG-21 — стандарт Moving Picture Experts Group, направлен на определение мультимедийных приложений. MPEG 21 одобрен в стандартах ISO/IEC 21000  Multimedia framework (MPEG 21). Ссылки Архитектура мультимедиа MPEG 21. Семенов Ю.А. (ГНЦ ИТЭФ) …   Википедия

  • MPEG-21 — ist ein Standard für die Erzeugung, die Produktion und die Freigabe von sowie den Handel mit multimedialen Inhalten, der von der Moving Picture Experts Group, kurz MPEG, definiert wurde. Er fasst alle am Arbeitsfluss Beteiligten vom Produzenten… …   Deutsch Wikipedia

  • MPEG-21 — Este artículo o sección necesita referencias que aparezcan en una publicación acreditada, como revistas especializadas, monografías, prensa diaria o páginas de Internet fidedignas. Puedes añadirlas así o avisar …   Wikipedia Español

  • MPEG-21 — El estándar MPEG 21, del grupo MPEG (Moving Picture Experts Group) tiene por objetivo el definir un marco abierto para aplicaciones multimedia ISO 21000. Específicamente, MPEG 21 define un estándar de Lenguaje de Expresiones sobre Derechos com… …   Enciclopedia Universal

  • MPEG-4 — is a method of defining compression of audio and visual (AV) digital data. It was introduced in late 1998 and designated a standard for a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture… …   Wikipedia

  • MPEG-1 Audio Layer II — MPEG 1 or MPEG 2 Audio Layer 2 Filename extension .mp2 Internet media type audio/mpeg,[1] audio/MPA[2] Initial release 1993 (1993 …   Wikipedia

  • MPEG-7 — is a multimedia content description standard. It was standardized in ISO/IEC 15938 (Multimedia content description interface).[1][2][3][4] This description will be associated with the content itself, to allow fast and efficient searching for… …   Wikipedia

  • MPEG transport stream — Filename extension .ts Internet media type video/MP2T[1] Developed by MPEG Initial release 1995 (1995) …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”