1、 IEC 62676-2-1 Edition 1.0 2013-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Video surveillance systems for use in security applications Part 2-1: Video transmission protocols General requirements Systmes de vidosurveillance destins tre utiliss dans les applications de scurit Partie 2-1: Protocole
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16、us: csciec.ch. IEC 62676-2-1 Edition 1.0 2013-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Video surveillance systems for use in security applications Part 2-1: Video transmission protocols General requirements Systmes de vidosurveillance destins tre utiliss dans les applications de scurit Partie
17、2-1: Protocoles de transmission vido Exigences gnrales INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE W ICS 13.320 PRICE CODE CODE PRIX ISBN 978-2-8322-1181-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Ele
18、ctrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colourinside 2 62676-2-1 IEC:2013 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 N
19、ormative references . 7 3 Terms, definitions and abbreviations 8 3.1 Terms and definitions 8 3.2 Abbreviations 15 4 Video transmission network architecture . 16 4.1 General . 16 4.2 Networking and connectivity 17 General . 17 4.2.1Network streaming performance: quality of service 18 4.2.24.3 Device
20、discovery and description 18 4.4 Video media types and payload formats 18 4.5 Video transport 18 4.6 Eventing and health check . 18 5 The building block of existing standards . 19 6 VSS device model 19 6.1 Overview . 19 6.2 Device model elements . 20 7 General IP interoperability requirements . 21 7
21、.1 General . 21 7.2 General protocol requirements overview 21 7.3 General high level IP video interface and protocol requirements 21 General . 21 7.3.1Versioning, capability exchange, and extensibility requirements 22 7.3.2Implementations 22 7.3.37.4 Non-conformance video transmission systems and de
22、vices . 22 7.5 Mandatory documentation for the IP video interface of a VTD 22 7.6 Video and data transport: mandatory streaming requirements . 24 7.7 Overview . 24 8 Live streaming 25 8.1 General . 25 8.2 Media stream protocol . 25 Transport format 25 8.2.1Media transport . 25 8.2.2Synchronization p
23、oint 27 8.2.38.3 Media control protocol . 28 Stream control . 28 8.3.1RTSP 28 8.3.2Keep-alive method for RTSP session . 29 8.3.3RTSP audio and video synchronization 30 8.3.4RTSP message example 31 8.3.58.4 Error handling . 32 9 Playback 32 9.1 General . 32 62676-2-1 IEC:2013 3 9.2 RTP header extensi
24、on . 32 10 Device discovery and description 32 11 Eventing requirements 32 Bibliography 34 Figure 1 Overview IP Video standard protocol 17 Figure 2 Functional protocol layers 17 Figure 3 Building block of existing standards . 19 Figure 4 VTD example network 20 Figure 5 Layer structure . 24 Figure 6
25、RTCP sequence . 26 Figure 7 RTCP sender report . 27 Figure 8 Media synchronization 27 Figure 9 Stream control . 28 Figure 10 Keep alive 30 Table 1 RTSP methods 29 4 62676-2-1 IEC:2013 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ VIDEO SURVEILLANCE SYSTEMS FOR USE IN SECURITY APPLICATIONS Part 2-1: Vi
26、deo transmission protocols General requirements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on
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36、blication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62676-2-1 has been prepared by IEC technical committe
37、e 79: Alarm and electronic security systems. The text of this standard is based on the following documents: FDIS Report on voting 79/435/FDIS 79/448/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publicatio
38、n has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62676 series, published under the general title Video surveillance systems for use in security applications, can be found on the IEC website. 62676-2-1 IEC:2013 5 The committee has decided that the c
39、ontents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT T
40、he colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 62676-2-1 IEC:2013 INTRODUCTION The IEC Technical Commi
41、ttee 79 in charge of alarm and electronic security systems together with many governmental organisations, test houses and equipment manufacturers have defined a common framework for video surveillance transmission in order to achieve interoperability between products. The IEC 62676 series of standar
42、ds on video surveillance system is divided into 4 independent parts: Part 1: System requirements Part 2: Video transmission protocols Part 3: Analog and digital video interfaces Part 4: Application guidelines (to be published) Each part has its own clauses on scope, references, definitions and requi
43、rements. This IEC 62676-2 series consists of 3 subparts, numbered parts 2-1, 2-2 and 2-3 respectively: IEC 62676-2-1, Video transmission protocols General requirements IEC 62676-2-2, Video transmission protocols IP interoperability implementation based on HTTP and REST services IEC 62676-2-3, Video
44、transmission protocols IP interoperability implementation based on Web services The first subpart of this IEC 62676-2 series defines protocol requirements to be fulfilled by any high-level IP video device interface. The following two parts Part 2-2 and Part 2-3 define two alternative protocols, one
45、is based on HTTP and REST services and the second is based on Web Services. It is based on the general requirements for video transmission of IEC 62676-1-2, which defines minimum IP connectivity requirements, basic video streaming, stream control, eventing, discovery and description functions. The p
46、urpose of the transmission system in a video surveillance system installation is to provide reliable transmission of video signals between the different types of Video Surveillance System (VSS) so far called CCTV equipment in security, safety and monitoring applications. Today VSS reside in security
47、 networks using IT infrastructure, equipment and connections within the protected site itself. 62676-2-1 IEC:2013 7 VIDEO SURVEILLANCE SYSTEMS FOR USE IN SECURITY APPLICATIONS Part 2-1: Video transmission protocols General requirements 1 Scope This part of IEC 62676 introduces an IP network interfac
48、e for devices in surveillance applications. This International Standard specifies a network protocol for the full interoperability of video devices. On top of the basic layers protocols are defined to accomplish the full interoperability of video devices. In surveillance applications IP video device
49、s have to use standardized protocols to accomplish following functionality: video streaming, stream control, event handling, discovery, capability description, device management, PTZ control, auxiliaries and other functions. Some areas of this transmission standard are covered by more than one approach, e.g. ZeroConf and WS-Discovery. The network protocols recommended and defined by
