Mpeg21 Parts

8/2/2019 Mpeg21 Parts

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MPEG-21 Multimedia Framework


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MPEG - the beginnings

t The rationaler Digital technologies destroy industry boundariesr Digital audio and video standards should be developed as

generic technologies

t The advantage of generic technologiesr They can be used by multiple industriesr They can be used to provide interoperability across

industries

t Communication standards are aboutinteroperability!


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The achievements

t MPEG-1r Approved Nov 1992 - Error free environments

t MPEG-2r Approved Nov 1994 - Broadcast TV and package media

t MPEG-4r Approved Oct 1998 and Dec 1999 - Object based AV coding

t MPEG-7r To be approved Jul 2001 - Multimedia description

t MPEG-21r First standard approved Mar 2002 Multimedia framework


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MPEG-1 - ISO/IEC 11172:1992

t Coding of moving pictures and associated audiofor digital storage media at up to about 1,5 Mbit/s

r Part 1 - MPEG-1 Systems - Program Streamr Part 2 - MPEG-1 Video for CD Ir Part 3 - MPEG-1 Audior Part 4 Conformancer Part 5 Reference software


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The use of MPEG-1

t Video CD (>60 million players sold in China)

t The format of audio and video for PC (MPEG-1software decoders in Windows)

t MPEG-1 Audio layer III (a.k.a. MP3) is widely usedfor Web music (more than 100 million softwareplayers)

t Digital Audio Broadcasting (DAB) utilises MPEG-1 Audio layer II

t Several types of MPEG-1 video cameras on sale


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MPEG-2 - ISO/IEC 13818:1994

t Generic coding of moving pictures andassociated audio

r Part -1 Systems - joint with ITUr Part -2 Video - joint with ITUr Part -3 Audior Part -4 Conformancer Part -5 Reference software

r Part -6 DSM CCr Part -7 AAC - Advanced Audio Codingr Part -9 RTI - Real Time Interface


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The use of MPEG-2

t Over 50 million set top boxes for satellite/cablesold

t Digital television VHF/UHF broadcasting

t Over 30 million hardware DVD players sold

t Several tens of million software DVD playerssold

t The MPEG-2 4:2:2 profile is largely used in thetelevision production industry

t MPEG-2 has created the entirely new digital

television industry worth ~30 billion USD


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MPEG-4 - ISO/IEC 14496:1998

t Coding of audio-visual objectsr Part 1 Systemsr Part 2 Visualr Part 3 Audior Part 4 Conformancer Part 5 Reference Softwarer Part 6 DMIF - Delivery Multimedia Integration Frameworkr Part 7 Optimized Softwarer Part 8 4 on IPr Part 9 Reference Hardware Description


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The use of MPEG-4

t MPEG-4 Videor adopted for visual communication in the mobile

environment

r used in WMFr Being requested by customers for all low bitrate

applicationsr Huge open source movement

t MP4 file formatr adopted for visual communication in the mobile

environment


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MPEG-7 ISO/IEC 15938

t Multimedia content description interfacer Part 1 Systemsr Part 2 DDL - Description definition languager Part 3 Visualr Part 4 Audior Part 5 Multimedia description schemesr Part 6 Reference softwarer Part 7 Conformance testing


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Role of MPEG standards

past and futuret The past

r MPEG technologies have been used to createinfrastructures on which business can flourish

r This happened in the simple transposition of thephysical/analogue world to the digital world

t The futurer MP3, DviX and peer-to-peer protocols etc. have shown the

power of digital content in peoples handsr These technologies have resulted in mass abuse of other

peoples IPR because of the absence of an appropriateinfrastructure


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MPEG-21 The vision

t A future where every human on the Earth ispotentially an element of a network involving

r billions of content providersr

billions of value addersr billions of packagersr billions of service providersr billions of consumersr billions of resellers

t To make this future real we need aninfrastructure enabling electronic commerce of digital content


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Is MPEG trying to tame the

hackers? t MPEG technologies have been used to innovate

substantially the way people produce, offer,access and consume digital content

t But MPEG has a also long history in workingwith the creative industries and rights holderscommunities on the identification, managementand protection of intellectual property carried onsystems designed to MPEG specifications.


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MPEG-21 - Method of work

t Define a framework supporting the vision statement

t Involve relevant bodies in this effort

t Identify the critical technologies of the frameworkt Understand how the components of the framework

are related and identify where gaps exist

t For each of the non-available technologiesr If they fall under the MPEG expertise then develop themr Else engage other bodies to achieve their development

t Perform the actual integration of the technologies


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The basic elements of theframework t What

r A Digital Item is a structured digital object with a standardrepresentation, identification and metadata within theMPEG-21 framework.

t Whor A User is any entity that interacts in the MPEG-21

environment or makes use of a Digital Item.

User A User BTransaction/Use/Relations

hipDigital Item

Authorization/ValueExchange


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Example of Digital Item

music compilation t music

t photos

t video

t animation graphics

t lyrics

t scores

t MIDI files

t interview with the singers

t news related to the song

t statement by an opinionmaker

t rating of an agency

t position in the hit list

t navigational informationdriven by user preferences

t bargains

t ...


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What Users can do

Create content

Provide content

Archive content

Rate content

Enhance/deliver content

Aggregate content

Syndicate content

Retail sale of content

Consume content

Subscribe to content

Regulate content

Facilitate transactions thatoccur from any of the above

Regulate transactions thatoccur from any of the above


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The MPEG-21 technologies - 1

1. Digital Item Declarationa uniform and flexible abstraction andinteroperable schema for declaring digitalitems

1. Digital Item Identification and Descriptiona framework for identification and description

of any entity regardless of its nature, type or granularity

1. Content management and usageinterfaces and protocols to enable creation,manipulation, storage, delivery and (re)use of


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4. Intellectual Property Management and ProtectionThe means to enable content to be persistentlyand reliably managed and protected acrossnetworks and devices

5. Content representationDigital representation of content as different

media so that content can be moved andconsumed seamlessly

6. Terminals and networksThe means to provide interoperable andtransparent access to content across networks


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7. Event reportingmetrics and interfaces that enable Users tounderstand precisely the performance of allreportable events within the framework


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Identificationand

Description

ContentManagementand Usage

The Multimedia Framework

Te r m i na l s &

N e tw o r ks

I P MP

ContentRepresent-

ation

Digital ItemDeclaration

EventReporting

Metrics& Interfaces E v

e n

t R e p o r t

i n g

M e

t r i c s

& I n t e r f a c e s

User A User BTransaction/Use/Relations

hipDigital Item

Authorization/ValueExchange

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