1、 International Telecommunication Union ITU-T H.750TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2008) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSIPTV multimedia services and applications for IPTV IPTV metadata High-level specification of metadata for IPTV services Recommendation ITU-T H.750 I
2、TU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230H.239 Communication procedures H.240H.259 Co
3、ding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for audiovisual and multimedia services H.360H.369
4、Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.510H.519 Mobile multimedia collaboration applications and services H
5、.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559Mobile multimedia collaboration inter-working procedures H.560H.569 BROADBAND, TRIPLE-PLAY AND ADVANCE
6、D MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling
7、H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T H.750 (10/2008) i Recommendation ITU-T H.750 High-level specification of metada
8、ta for IPTV services Summary Recommendation ITU-T H.750 gives the high-level specification of the metadata for IPTV services, with its elements and delivery protocols. IPTV metadata, the information on services and content processed by the service and content delivery infrastructure, provides a desc
9、riptive and structural framework for managing IPTV services. The types of metadata for IPTV are service and content metadata, user metadata, metadata for content provisioning and management, metadata aggregation management, and rights and security related metadata. Aspects of discovery, delivery and
10、 transport, representation and management of metadata are covered in this Recommendation. Source Recommendation ITU-T H.750 was approved on 14 October 2008 by ITU-T Study Group 16 (2005-2008) under Recommendation ITU-T A.8 procedure. ii Rec. ITU-T H.750 (10/2008) FOREWORD The International Telecommu
11、nication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff
12、 questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommend
13、ations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendat
14、ion, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability
15、or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that complianc
16、e with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or
17、applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to
18、implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2009 All rights reserved. No part of this publication may be reproduced, by a
19、ny means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.750 (10/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 3 3.1 Terms defined elsewhere 3 3.2 Terms defined in this Recommendation. 3 4 Abbreviations and acronyms 3 5 Conventions 4 6 IPTV metadata framework
20、. 4 6.1 Metadata framework. 4 6.2 IPTV metadata service overview 4 6.3 Metadata representation 4 6.4 Classification scheme . 5 6.5 Identity management 5 6.6 Metadata API 5 7 Discovery, transport and delivery of metadata. 5 7.1 Metadata service discovery 5 7.2 Service provider metadata 6 7.3 Metadata
21、 delivery method 6 7.4 Updating method 6 7.5 Metadata fragments 7 7.6 Metadata transport container 7 7.7 Metadata change notification . 7 8 IPTV service and content metadata 8 8.1 Service and content metadata . 8 8.2 User metadata . 14 9 Metadata for content provisioning and management 16 9.1 Metada
22、ta for content provisioning 16 9.2 Metadata aggregation management 16 10 Rights and security-related metadata for IPTV 16 10.1 Elements required for usage restrictions, usage rules 17 10.2 User metadata security . 17 11 Metadata for public interest services 17 Bibliography. 18 Rec. ITU-T H.750 (10/2
23、008) 1 Recommendation ITU-T H.750 High-level specification of metadata for IPTV services 1 Scope This Recommendation gives the high-level specification of the metadata for IPTV services, its elements and delivery protocols. The IPTV metadata is the information on services and content processed by se
24、rvice and content delivery infrastructure and provides a descriptive and structural framework for managing IPTV services. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At t
25、he time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed bel
26、ow. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T F.750 Recommendation ITU-T F.750 (2004), Metadata framework. ISO/IEC 15706 ISO/IEC
27、 15706:2002/7, Information and documentation International Standard Audiovisual Number (ISAN) Parts 1 and 2. ISO/IEC 15938-5 ISO/IEC 15938-5:2003, Information technology Multimedia content description interface Part 5: Multimedia description schemes. ISO/IEC 21000-7 ISO/IEC 21000-7:2007, Information
28、 technology Multimedia framework (MPEG-21) Part 7: Digital Item Adaptation. ETSI TS 102 034 ETSI TS 102 034 V1.3.1 (2007), Digital Video Broadcasting (DVB); Transport of MPEG-2 TS Based DVB Services over IP Based Networks. ETSI TS 102 471 ETSI TS 102 471 V1.2.1 (2006), Digital Video Broadcasting (DV
29、B); IP Datacast over DVB-H: Electronic Service Guide (ESG). ETSI TS 102 472 ETSI TS 102 472 V1.2.1 (2006), Digital Video Broadcasting (DVB); IP Datacast over DVB-H: Content Delivery Protocols. ETSI TS 102 539 ETSI TS 102 539 V1.2.1 (2008), Digital Video Broadcasting (DVB); Carriage of Broadband Cont
30、ent Guide (BCG) information over Internet Protocol (IP). 2 Rec. ITU-T H.750 (10/2008) ETSI TS 102 822-3-1 ETSI TS 102 822-3-1 V1.4.1 (2007), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 3: Metadata; Sub-part 1: Phase 1 M
31、etadata schemas. ETSI TS 102 822-3-2 ETSI TS 102 822-3-2 V1.4.1 (2007), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 3: Metadata; Sub-part 2: System aspects in a uni-directional environment. ETSI TS 102 822-3-3 ETSI TS 1
32、02 822-3-3 V1.2.1 (2007), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 3: Metadata; Sub-part 3: Phase 2 Extended Metadata Schema. ETSI TS 102 822-3-4 ETSI TS 102 822-3-4 V1.2.1 (2008), Broadcast and On-line Services: Sea
33、rch, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 3: Metadata; Sub-part 4: Phase 2 Interstitial metadata. ETSI TS 102 822-4 ETSI TS 102 822-4 V1.3.1 (2007), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems
34、 (“TV-Anytime“); Part 4: Phase 1 Content referencing. ETSI TS 102 822-5-1 ETSI TS 102 822-5-1 V1.3.1 (2008), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“);Part 5: Rights Management and Protection (RMP); Sub-part 1: Information
35、for Broadcast Applications. ETSI TS 102 822-6-1 ETSI TS 102 822-6-1 V1.4.1 (2007), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 6: Delivery of metadata over a bi-directional network; Sub-part 1: Service and transport. ET
36、SI TS 102 822-6-3 ETSI TS 102 822-6-3 V1.2.1 (2008), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 6: Delivery of metadata over a bi-directional network; Sub-part 3: Phase 2 Exchange of Personal Profile. ETSI TS 102 822-8
37、 ETSI TS 102 822-8 V1.2.1 (2007), Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 8: Phase 2 Interchange Data Format. IETF RFC 3265 IETF RFC 3265 (2002), Session Initiation Protocol (SIP) Specific Event Notification. IETF R
38、FC 4287 IETF RFC 4287 (2005), The Atom Syndication Format. Rec. ITU-T H.750 (10/2008) 3 OASIS 200401 OASIS Standard 200401 (2004), Web Services Security: SOAP Message Security 1.0. OASIS WSBN OASIS WSBN (2006), Web Services Base Notification 1.3 (WS-BaseNotification). 3 Definitions 3.1 Terms defined
39、 elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 metadata: Structured, encoded data that describe characteristics of information-bearing entities to aid in the identification, discovery, assessment and management of the described entities. b-ITU-T IPTVFG 3.2 Terms def
40、ined in this Recommendation This Recommendation defines the following terms: 3.2.1 metadata fragments: A metadata fragment is a self-consistent atomic portion of a metadata instance. In this context, self-consistency means that fragments can be obtained in a random order and each fragment can be tra
41、nsmitted and updated independently. 3.2.2 metadata instance: A metadata instance is the data instance describing the instance of content or user, etc. A metadata instance has its data model defined by a corresponding metadata schema. 3.2.3 metadata schema: A metadata schema is the representation for
42、mat for a specifying data model describing target instances. 3.2.4 usage environment: The usage environment is described by user characteristics, terminal capabilities, network characteristics and natural environment characteristics, where the content is being consumed. 4 Abbreviations and acronyms
43、This Recommendation uses the following abbreviations and acronyms: API Application Programming Interface CS Classification Scheme DVB Digital Video Broadcasting EPG Electronic Programme Guide ESG Electronic Service Guide FLUTE File deLivery over Unidirectional Transport HTTP HyperText Transfer Proto
44、col IPTV Internet Protocol TeleVision ISAN International Standard Audiovisual Number MPEG Moving Picture Experts Group PPV Pay-Per View QoS Quality of Service 4 Rec. ITU-T H.750 (10/2008) SDO Standards Development Organization SIP Session Initiation Protocol SOA Service-Oriented Architecture SOAP Si
45、mple Object Access Protocol VoD Video on Demand XML eXtensible Markup Language 5 Conventions No specific conventions have been used in this Recommendation. 6 IPTV metadata framework 6.1 Metadata framework A general metadata framework is defined in ITU-T F.750. 6.2 IPTV metadata service overview Figu
46、re 6-1 illustrates metadata flows between metadata sources and client side metadata applications, including user navigation methods and interactive programme guides. Figure 6-1 IPTV metadata service overview The metadata server is the entity responsible for aggregating metadata sets produced by cont
47、ent providers or service providers to describe services and content, as well as metadata sets generated or registered by metadata clients to describe end-user preference or context. These metadata sets are maintained in the database managed by the metadata server. The metadata maintained in the meta
48、data servers database is accessed by, delivered to, or contributed from metadata clients through metadata delivery and exchange protocols. These clients are typically categorized as web-based navigation servers maintained by the service provider or client-side applications running on the IPTV client
49、. Metadata directly consumed by a client-side metadata application is used for providing the network-transparent user interface for navigation, for example, a content overview listing integrated with local content storage management. The metadata server also stores and manages end-user profiles or context metadata required to support content or service adaptation. 6.3 Metadata representation Most metadata instances which are generated according to industry standards and are compliant to
