MPEG-21

Short description: Digital rights management standard

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

* 1 Digital Rights Management
* 2 See also
* 3 References
* 4 Further reading
* 5 External links

## 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 hope 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

* Digital Rights Management
* Axmedis AXMEDIS are free MPEG-21 tools for authoring and play

## References

1. ↑ ISO. "ISO/IEC TR 21000-1:2004 - Information technology -- Multimedia framework (MPEG-21) -- Part 1: Vision, Technologies and Strategy". https://www.iso.org/standard/40611.html.
2. ↑ ISO. "ISO/IEC 21000-2:2005 - Information technology -- Multimedia framework (MPEG-21) -- Part 2: Digital Item Declaration". https://www.iso.org/standard/41112.html.
3. ↑ ISO. "ISO/IEC 21000-3:2003 - Information technology -- Multimedia framework (MPEG-21) -- Part 3: Digital Item Identification". https://www.iso.org/standard/35367.html.
4. ↑ MPEG. "About MPEG - Achievements". chiariglione.org. http://mpeg.chiariglione.org/achievements.htm.
5. ↑ MPEG. "Terms of Reference". chiariglione.org. http://mpeg.chiariglione.org/terms_of_reference.htm.
6. ↑ MPEG. "MPEG standards". chiariglione.org. http://mpeg.chiariglione.org/standards.htm.
7. ↑ ISO (2006). "MPEG-21 File Format white paper - Proposal". chiariglione.org. http://mpeg.chiariglione.org/technologies/mpeg-21/mp21-ff/index.htm.
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

* Framework Overview

## External links

* MPEG-21 Overview
* MPEG-21 Resources section of the MPEG Industry Forum web site
* MPEG-21 Multimedia Framework (Overview and State of the Art)
* MPEG-21 Overview (blog)
* MPEG-7/-21 Community Portal
* MPEG-21 schema files

* v
* t
* e

Multimedia compression and container formats

Video
compression|

| ISO, IEC, MPEG|

* MJPEG
* Motion JPEG 2000
* MPEG-1
* MPEG-2
* Part 2
* MPEG-4
* Part 2 / ASP
* Part 10 / AVC
* MPEG-H
* Part 2 / HEVC
* MPEG-I
* Part 3 / VVC

|

ITU-T, VCEG|

* H.120
* DCT
* H.261
* H.262
* H.263
* H.264 / AVC
* H.265 / HEVC
* H.266 / VVC
* DV

SMPTE|

* VC-1
* VC-2
* VC-3
* VC-5

TrueMotion|

* TrueMotion S
* DCT
* VP3
* VP6
* VP7
* VP8
* VP9
* AV1

Others|

* Apple Video
* AVS
* Bink
* Cinepak
* Daala
* DVI
* EVC
* FFV1
* Huffyuv
* Indeo
* Lagarith
* Microsoft Video 1
* MSU Lossless
* OMS Video
* Pixlet
* ProRes 422
* ProRes 4444
* QuickTime
* Animation
* Graphics
* RealVideo
* RTVideo
* SheerVideo
* Smacker
* Sorenson Video/Spark
* Theora
* Thor
* WMV
* XEB
* YULS

Audio
compression|

| ISO, IEC, MPEG|

* MPEG-1 Layer II
* Multichannel
* MPEG-1 Layer I
* MPEG-1 Layer III (MP3)
* AAC
* HE-AAC
* AAC-LD
* MPEG Surround
* MPEG-4 ALS
* MPEG-4 SLS
* MPEG-4 DST
* MPEG-4 HVXC
* MPEG-4 CELP
* MPEG-D USAC
* MPEG-H 3D Audio

|

ITU-T|

* G.711
* A-law
* µ-law
* G.718
* G.719
* G.722
* G.722.1
* G.722.2
* G.723
* G.723.1
* G.726
* G.728
* G.729
* G.729.1

IETF|

* Opus
* iLBC
* Speex
* Vorbis

3GPP|

* AMR
* AMR-WB
* AMR-WB+
* EVRC
* EVRC-B
* EVS
* GSM-HR
* GSM-FR
* GSM-EFR

ETSI|

* AC-3
* AC-4
* DTS

Others|

* ACELP
* ALAC
* Asao
* ATRAC
* AVS
* CELT
* Codec 2
* DRA
* FLAC
* iSAC
* Monkey's Audio
* TTA
* True Audio
* MT9
* Musepack
* OptimFROG
* OSQ
* QCELP
* RCELP
* RealAudio
* RTAudio
* SD2
* SHN
* SILK
* Siren
* SMV
* SVOPC
* TwinVQ
* VMR-WB
* VSELP
* WavPack
* WMA
* MQA
* aptX
* aptX HD
* aptX Low Latency
* aptX Adaptive
* LDAC
* LHDC
* LLAC

Image
compression|

| IEC, ISO,
IETF, W3C,
ITU-T, JPEG|

* CCITT Group 4
* DCT
* HEIF
* HEVC
* JPEG
* JPEG XR
* JPEG XT
* TIFF/EP
* Arithmetic
* JBIG
* JBIG2
* JPEG-LS
* JPEG 2000
* LZ
* GIF
* PNG
* TIFF
* TIFF/IT

|

Others|

* APNG
* BPG
* DjVu
* EXR
* FLIF
* ICER
* MNG
* PGF
* QTVR
* WBMP
* WebP

Containers|

| ISO, IEC|

* MPEG-ES
* MPEG-PES
* MPEG-PS
* MPEG-TS
* ISO base media file format
* MPEG-4 Part 14 (MP4)
* Motion JPEG 2000
* MPEG-21 Part 9
* MPEG media transport

|

ITU-T|

* H.222.0
* T.802

IETF|

* RTP
* Ogg

SMPTE|

* GXF
* MXF

Others|

* 3GP and 3G2
* AMV
* ASF
* AIFF
* AVI
* AU
* BPG
* Bink
* Smacker
* BMP
* DivX Media Format
* EVO
* Flash Video
* IFF
* M2TS
* Matroska
* WebM
* QuickTime File Format
* RatDVD
* RealMedia
* RIFF
* WAV
* MOD and TOD
* VOB, IFO and BUP

Collaborations|

* NETVC
* MPEG LA
* HEVC Advance

Methods|

* Discrete cosine transform
* DCT
* MDCT
* Entropy
* Arithmetic
* Huffman
* Modified
* FFT
* LPC
* ACELP
* CELP
* LSP
* WLPC
* Lossless
* Lossy
* LZ
* DEFLATE
* LZW
* PCM
* A-law
* µ-law
* ADPCM
* DPCM
* Transform
* Wavelet
* Daubechies
* DWT
* Transform

Lists|

* Comparison of audio coding formats
* Comparison of video codecs
* List of codecs

See Compression methods for techniques and Compression software for codecs

* v
* t
* e

MPEG (Moving Picture Experts Group)

* MPEG-1
* 2
* 3
* 4
* 7
* 21
* A
* B
* C
* D
* E
* G
* V
* M
* U
* H

MPEG-1 Parts|

* Part 1: Systems
* Program stream
* Part 2: Video
* based on H.261
* Part 3: Audio
* Layer I
* Layer II
* Layer III

MPEG-2 Parts|

* Part 1: Systems (H.222.0)
* Transport stream
* Program stream
* Part 2: Video (H.262)
* Part 3: Audio
* Layer I
* Layer II
* Layer III
* MPEG Multichannel
* Part 6: DSM CC
* Part 7: Advanced Audio Coding

MPEG-4 Parts|

* Video
* based on H.263
* Audio
* DMIF
* Part 10: Advanced Video Coding (H.264)
* Scene description
* Part 12: ISO base media file format
* MP4 file format
* Streaming text format
* LASeR
* Part 22: Open Font Format
* Part 33: Internet Video Coding

MPEG-7 Parts|

* Description definition language

MPEG-21 Parts|

* Parts 2, 3 and 9: Digital Item
* Part 5: Rights Expression Language

MPEG-D Parts|

* Part 1: MPEG Surround
* Part 3: Unified Speech and Audio Coding

MPEG-G Parts|

* Part 1: Transport and Storage of Genomic Information
* Part 2: Coding of Genomic Information
* Part 3: APIs
* Part 4: Reference Software
* Part 5: Conformance

MPEG-H Parts|

* Part 1: MPEG media transport
* Part 2: High Efficiency Video Coding
* Part 3: MPEG-H 3D Audio
* Part 12: High Efficiency Image File Format

Other|

MPEG-DASH

* v
* t
* e

ISO standards by standard number

List of ISO standards / ISO romanizations / IEC standards

1–9999|

* 1
* 2
* 3
* 4
* 5
* 6
* 7
* 9
* 16
* 17
* 31
* -0
* -1
* -2
* -3
* -4
* -5
* -6
* -7
* -8
* -9
* -10
* -11
* -12
* -13
* 128
* 216
* 217
* 226
* 228
* 233
* 259
* 269
* 302
* 306
* 361
* 428
* 500
* 518
* 519
* 639
* -1
* -2
* -3
* -5
* -6
* 646
* 657
* 668
* 690
* 704
* 732
* 764
* 838
* 843
* 860
* 898
* 965
* 999
* 1000
* 1004
* 1007
* 1073-1
* 1155
* 1413
* 1538
* 1629
* 1745
* 1989
* 2014
* 2015
* 2022
* 2033
* 2047
* 2108
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* 2240
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* 2533
* 2709
* 2711
* 2720
* 2788
* 2848
* 2852
* 3029
* 3103
* 3166
* -1
* -2
* -3
* 3297
* 3307
* 3601
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* 3864
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* 3977
* 4031
* 4157
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* 6523
* 6709
* 6943
* 7001
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* 7010
* 7027
* 7064
* 7098
* 7185
* 7200
* 7498
* -1
* 7637
* 7736
* 7810
* 7811
* 7812
* 7813
* 7816
* 7942
* 8000
* 8093
* 8178
* 8217
* 8373
* 8501-1
* 8571
* 8583
* 8601
* 8613
* 8632
* 8651
* 8652
* 8691
* 8805/8806
* 8807
* 8820-5
* 8859
* -1
* -2
* -3
* -4
* -5
* -6
* -7
* -8
* -8-I
* -9
* -10
* -11
* -12
* -13
* -14
* -15
* -16
* 8879
* 9000/9001
* 9036
* 9075
* 9126
* 9141
* 9227
* 9241
* 9293
* 9314
* 9362
* 9407
* 9506
* 9529
* 9564
* 9592/9593
* 9594
* 9660
* 9797-1
* 9897
* 9899
* 9945
* 9984
* 9985
* 9995

10000–19999|

* 10005
* 10006
* 10007
* 10116
* 10118-3
* 10160
* 10161
* 10165
* 10179
* 10206
* 10218
* 10303
* -11
* -21
* -22
* -28
* -238
* 10383
* 10487
* 10585
* 10589
* 10646
* 10664
* 10746
* 10861
* 10957
* 10962
* 10967
* 11073
* 11170
* 11179
* 11404
* 11544
* 11783
* 11784
* 11785
* 11801
* 11898
* 11940 (-2)
* 11941
* 11941 (TR)
* 11992
* 12006
* 12182
* 12207
* 12234-2
* 13211
* -1
* -2
* 13216
* 13250
* 13399
* 13406-2
* 13450
* 13485
* 13490
* 13567
* 13568
* 13584
* 13616
* 14000
* 14031
* 14224
* 14289
* 14396
* 14443
* 14496
* -2
* -3
* -6
* -10
* -11
* -12
* -14
* -17
* -20
* 14644
* 14649
* 14651
* 14698
* 14750
* 14764
* 14882
* 14971
* 15022
* 15189
* 15288
* 15291
* 15292
* 15398
* 15408
* 15444
* -3
* 15445
* 15438
* 15504
* 15511
* 15686
* 15693
* 15706
* -2
* 15707
* 15897
* 15919
* 15924
* 15926
* 15926 WIP
* 15930
* 16023
* 16262
* 16355-1
* 16612-2
* 16750
* 16949 (TS)
* 17024
* 17025
* 17100
* 17203
* 17369
* 17442
* 17799
* 18000
* 18004
* 18014
* 18245
* 18629
* 18916
* 19005
* 19011
* 19092 (-1
* -2)
* 19114
* 19115
* 19125
* 19136
* 19407
* 19439
* 19500
* 19501
* 19502
* 19503
* 19505
* 19506
* 19507
* 19508
* 19509
* 19510
* 19600
* 19752
* 19757
* 19770
* 19775-1
* 19794-5
* 19831

20000+|

* 20000
* 20022
* 20121
* 20400
* 21000
* 21047
* 21500
* 21827:2002
* 22000
* 23270
* 23271
* 23360
* 24517
* 24613
* 24617
* 24707
* 25178
* 25964
* 26000
* 26262
* 26300
* 26324
* 27000 series
* 27000
* 27001
* 27002
* 27006
* 27729
* 28000
* 29110
* 29148
* 29199-2
* 29500
* 30170
* 31000
* 32000
* 37001
* 38500
* 40500
* 42010
* 45001
* 50001
* 55000
* 80000
* -1
* -2
* -3

* Category

* v
* t
* e

List of International Electrotechnical Commission standards

IEC standards|

* IEC 60027
* IEC 60034
* IEC 60038
* IEC 60062
* IEC 60063
* IEC 60068
* IEC 60112
* IEC 60228
* IEC 60269
* IEC 60297
* IEC 60309
* IEC 60320
* IEC 60364
* IEC 60446
* IEC 60559
* IEC 60601
* IEC 60870
* IEC 60870-5
* IEC 60870-6
* IEC 60906-1
* IEC 60908
* IEC 60929
* IEC 60958
* AES3
* S/PDIF
* IEC 61030
* IEC 61131
* IEC 61131-3
* IEC 61158
* IEC 61162
* IEC 61334
* IEC 61346
* IEC 61355
* IEC 61360
* IEC 61400
* IEC 61499
* IEC 61508
* IEC 61511
* IEC 61850
* IEC 61851
* IEC 61883
* IEC 61960
* IEC 61968
* IEC 61970
* IEC 62014-4
* IEC 62056
* IEC 62061
* IEC 62196
* IEC 62262
* IEC 62264
* IEC 62304
* IEC 62325
* IEC 62351
* IEC 62365
* IEC 62366
* IEC 62379
* IEC 62386
* IEC 62455
* IEC 62680
* IEC 62682
* IEC 62700

ISO/IEC standards|

* ISO/IEC 646
* ISO/IEC 2022
* ISO/IEC 4909
* ISO/IEC 5218
* ISO/IEC 6429
* ISO/IEC 6523
* ISO/IEC 7810
* ISO/IEC 7811
* ISO/IEC 7812
* ISO/IEC 7813
* ISO/IEC 7816
* ISO/IEC 7942
* ISO/IEC 8613
* ISO/IEC 8632
* ISO/IEC 8652
* ISO/IEC 8859
* ISO/IEC 9126
* ISO/IEC 9293
* ISO/IEC 9592
* ISO/IEC 9593
* ISO/IEC 9899
* ISO/IEC 9945
* ISO/IEC 9995
* ISO/IEC 10021
* ISO/IEC 10116
* ISO/IEC 10165
* ISO/IEC 10179
* ISO/IEC 10646
* ISO/IEC 10967
* ISO/IEC 11172
* ISO/IEC 11179
* ISO/IEC 11404
* ISO/IEC 11544
* ISO/IEC 11801
* ISO/IEC 12207
* ISO/IEC 13250
* ISO/IEC 13346
* ISO/IEC 13522-5
* ISO/IEC 13568
* ISO/IEC 13818
* ISO/IEC 14443
* ISO/IEC 14496
* ISO/IEC 14882
* ISO/IEC 15288
* ISO/IEC 15291
* ISO/IEC 15408
* ISO/IEC 15444
* ISO/IEC 15445
* ISO/IEC 15504
* ISO/IEC 15511
* ISO/IEC 15693
* ISO/IEC 15897
* ISO/IEC 15938
* ISO/IEC 16262
* ISO/IEC 17024
* ISO/IEC 17025
* ISO/IEC 18000
* ISO/IEC 18004
* ISO/IEC 18014
* ISO/IEC 19752
* ISO/IEC 19757
* ISO/IEC 19770
* ISO/IEC 19788
* ISO/IEC 20000
* ISO/IEC 21000
* ISO/IEC 21827
* ISO/IEC 23000
* ISO/IEC 23003
* ISO/IEC 23008
* ISO/IEC 23270
* ISO/IEC 23360
* ISO/IEC 24707
* ISO/IEC 24727
* ISO/IEC 24744
* ISO/IEC 24752
* ISO/IEC 26300
* ISO/IEC 27000
* ISO/IEC 27000-series
* ISO/IEC 27002
* ISO/IEC 27040
* ISO/IEC 29119
* ISO/IEC 33001
* ISO/IEC 38500
* ISO/IEC 42010
* ISO/IEC 80000

Related|

* International Electrotechnical Commission

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