1、 ETSI TS 102 826 V2.1.1 (2016-04) Digital Video Broadcasting (DVB); DVB-IPTV Profiles for TS 102 034 TECHNICAL SPECIFICATION ETSI ETSI TS 102 826 V2.1.1 (2016-04)2 Reference RTS/JTC-DVB-359 Keywords broadcast, digital, DVB, IP, profile, TV, video ETSI 650 Route des Lucioles F-06921 Sophia Antipolis
2、Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present documen
3、t may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or
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5、s of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be
6、 reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing rest
7、riction extend to reproduction in all media. European Telecommunications Standards Institute 2016. European Broadcasting Union 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of
8、ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 826 V2.1.1 (2016-04)3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g31 Scope 5
9、g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Overview 7g34.1 Rationale. 7g34.2 Concept 7g34.3 Service and Device Impacts . 8g35 DVB-IPTV Handbook Modules . 8g35.1 Foundation Layer/Provis
10、ioning Module . 8g35.2 Media Transport Module 8g35.3 Connection Module 9g35.4 Media Format Module 9g35.5 Service Discovery Module . 9g35.6 Metadata Module 10g35.7 Reliable Transport Module . 10g36 Profiles . 11g36.0 Overview 11g36.1 Basic . 11g36.2 Live Media Broadcast (LMB) 11g36.3 Content On Deman
11、d (CoD) 11g36.4 Content Download (CDS) 12g37 Extensions 12g38 Profile Summary 13g3History 14g3ETSI ETSI TS 102 826 V2.1.1 (2016-04)4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essent
12、ial IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates
13、are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server)
14、which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telec
15、ommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in the Memorandum of Understanding
16、also CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination of its members activities in the technical, legal, programme-making and programme-exchange domains.
17、The EBU has active members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Founded in September 1993, the DVB Project is a market-led consortium
18、 of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led systems, which me
19、et the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause
20、3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 102 826 V2.1.1 (2016-04)5 1 Scope DVB has produced a specification for the delivery of MPEG-2 TS based DVB serv
21、ices over IP networks, referred to as the DVB-IPTV handbook 1. The DVB-IPTV handbook covers several types of IPTV services (e.g. Live Media Broadcast, Content on Demand, Content Download). It has become evident that every building block in the DVB-IPTV handbook is not necessarily required for the de
22、ployment of specific IPTV systems. It is however currently not possible to implement a subset of the building blocks and claim compliancy to the DVB-IPTV handbook. Therefore, the present document defines a small set of service oriented profiles in order to facilitate and maximize the stepwise deploy
23、ment of IPTV services. A profile is a coherent subset of the DVB-IPTV handbook, allowing companies to claim a degree of DVB compliancy for IPTV services. Details about specific technologies referenced in the present document are described in the DVB IPTV handbook 1. 2 References 2.1 Normative refere
24、nces References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Refe
25、renced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced
26、 documents are necessary for the application of the present document. 1 ETSI TS 102 034 (V2.1.1): “Digital Video Broadcasting (DVB); Transport of MPEG-2 TS Based DVB Services over IP Based Networks“. 2 ETSI TS 102 539 (V1.2.1): “Digital Video Broadcasting (DVB); Carriage of Broadband Content Guide (
27、BCG) information over Internet Protocol (IP)“. 3 ETSI TS 101 154: “Digital Video Broadcasting (DVB); Specification for the use of Video and Audio Coding in Broadcasting Applications based on the MPEG-2 Transport Stream“. 4 IETF RFC 3376: “Internet Group Management Protocol, Version 3“. 5 IETF RFC 35
28、50: “RTP: A Transport Protocol for Real-Time Applications“. 6 IETF RFC 3810: “Multicast Listener Discovery Version 2 (MLDv2) for IPv6“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific
29、references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The foll
30、owing referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. Not applicable. ETSI ETSI TS 102 826 V2.1.1 (2016-04)6 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document,
31、 the following terms and definitions apply: extension: non-required option that can be added to a profile in order to enhance it module: set of options (protocol and media format) for fulfilling a given functionality of the DVB-IPTV handbook option: one technical possibility for providing the functi
32、onality of a module profile: collection of functionalities making use of a set of options taken from the modules, that defines a point of interoperability for DVB-IPTV ecosystems 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AL-FEC Application Layer F
33、orward Error Control BCG Broadband Content Guide CDS Content Download Service CoD Content on Demand DVBSTP DVB SD etc.) needed for the HNED to communicate with its IP environment and to connect to a service provider. It regroups: Address assignment and device configuration. IP address autoconfigurat
34、ion. NOTE: This module is mandatory in every profile. 5.2 Media Transport Module Two transport technologies may be used to deliver streamed IPTV services (LMB and CoD): UDP only (ETSI TS 102 034 1, clause 7.1.2); RTP/UDP (ETSI TS 102 034 1, clause 7.1.1). ETSI ETSI TS 102 826 V2.1.1 (2016-04)9 NOTE:
35、 The RTP layer as defined within the DVB-IPTV handbook does not require all the features described in the RTP RFC 5. Several fields are not mandatory, and more importantly it is required that Receiver Reports are not generated (see ETSI TS 102 034 1, clause 7.1.1.1) unless the Retransmission extensi
36、on is supported by the HNED and the DVB Retransmission service is provisioned. Two transport technologies may be used to download content items: HTTP/TCP (ETSI TS 102 034 1, clause 10.6.3); FLUTE/UDP (ETSI TS 102 034 1, clause 10.6.2). 5.3 Connection Module The DVB-IPTV handbook specifies connection
37、 protocols depending on the type of IPTV services: For a Live Media Broadcast Service (delivered over multicast), IGMP is required for IPv4 and MLD Version 2 for IPv6 (ETSI TS 102 034 1, clause 7.3.1); additionally RTSP may be used (ETSI TS 102 034 1, clause 6.5). For a Live Media Broadcast with Tri
38、ck Modes or Content on Demand Service (delivered over unicast), RTSP is required (ETSI TS 102 034 1, clause 7.3.2). For Content Download Services, HTTP to connect to unicast download, (ETSI TS 102 034 1, clause 10.6.3) and one of the multicast methods (IGMP or MLD) to connect to multicast download,
39、are required (ETSI TS 102 034 1, clause 10.6.2). NOTE: The DVB-IPTV handbook specifies two methods to join a multicast download: the use of IGMP version 3 4 for IPv4 or MLD Version 2 6 for IPv6. Both methods contain backward compatibility rules in order to allow a mixed operation of devices. Refer t
40、o the IGMPv3 RFC 4, clause 7 for more details about IGMP interoperability. MLD interoperability is described in MLDv2 RFC 6, clause 8. 5.4 Media Format Module The DVB-IPTV handbook references ETSI TS 101 154 3 for audio and video coding formats based on MPEG-2 Transport Stream content delivery. ETSI
41、 TS 101 154 3 proposes a set of coding formats for audio and video. For example, video can be MPEG2, H264 SD, H264 HD, VC-1 SD, etc. The profiles defined in the present document will not specify which coding formats shall be used. DVB considers that it is an application decision made by manufacturer
42、s, content and service providers and broadcasters. The deployed service compliant to a profile is required to use at least one coding format from ETSI TS 101 154 3. For Content Download Services, several content item formats and file formats may be used to represent audio-visual information (see ETS
43、I TS 102 034 1, clause 10.4). 5.5 Service Discovery Module SD connection: IGMP for IPv4 or MLD for IPv6; format: MPEG-2 coding formats. ETSI TS 101 154 3 clauses are: - video: 5.1: 25 Hz MPEG-2 SDTV; - video: 5.3: 30 Hz MPEG-2 SDTV; - audio: 6.1: MPEG-1 and MPEG-2 backward compatible audio. discover
44、y: SD metadata: SI/PSI tables in the MPEG2-TS stream and SD connection: IGMP for IPv4 or MLD for IPv6; format: Refer to ETSI TS 101 154 3; discovery: SD metadata: SI/PSI tables in the MPEG2-TS stream and SD ETSI ETSI TS 102 826 V2.1.1 (2016-04)12 connection: RTSP; format: Refer to ETSI TS 101 154 3;
45、 discovery: SD metadata: SD&S XML data and BCG-TVA. 6.4 Content Download (CDS) This profile defines the required subset to build IPTV Content Download Services. The following options shall be supported: Transport: HTTP/TCP and FLUTE/UDP Connection: HTTP and IGMP for IPv4 or MLD for IPv6 Format: - Au
46、dio/Video: Refer to ETSI TS 101 154 3 document. - Content-Item-Format: 0, 1, and 2. - File-Format: MPEG-2 transport stream format. Discovery: SD&S and BCG. Metadata: SD&S XML, BCG-TVA and XML-coded CDS download session description. 7 Extensions Extensions can be defined as enhancement to profiles. T
47、his clause presents a non exhaustive list of possible extensions: Reliable transport The addition of the Hybrid AL-FEC system, as defined in the DVB-IPTV handbook, enables a more reliable streaming technology. - Targeted Profiles: LMB, CoD. The addition of the Retransmission system, as defined in th
48、e DVB-IPTV handbook, enables a more reliable streaming technology. - Targeted Profiles: LMB, CoD. The addition of Raptor FEC for object delivery, as defined in the DVB-IPTV handbook, provides a more reliable CDS multicast download technology. - Targeted Profile: CDS. Advanced metadata The addition o
49、f BCG tool and TVA metadata enables the use of advanced Electronic Program Guide (EPG). - Targeted Profiles: Basic, LMB. Advanced connection control The RTSP protocol can be added to provide an additional session management layer. - Targeted Profiles: Basic, LMB. ETSI ETSI TS 102 826 V2.1.1 (2016-04)13 8 Profile Summary Table 1 summarizes the four defined profiles. Please refer to the relevant profile clause for more details. For each of those profi
