1、 IEC 62676-1-2 Edition 1.0 2013-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Video surveillance systems for use in security applications Part 1-2: System requirements Performance requirements for video transmission Systmes de vidosurveillance destins tre utiliss dans les applications de scurit Par
2、tie 1-2: Exigences systmes Exigences de performances pour la transmission vido IEC 62676-1-2:2013 colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized i
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16、u si vous avez des questions contactez-nous: csciec.ch. IEC 62676-1-2 Edition 1.0 2013-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Video surveillance systems for use in security applications Part 1-2: System requirements Performance requirements for video transmission Systmes de vidosurveillance
17、destins tre utiliss dans les applications de scurit Partie 1-2: Exigences systmes Exigences de performances pour la transmission vido INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 13.320 PRICE CODE CODE PRIX ISBN 978-2-8322-1158-8 Registered trademark of
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19、nside 2 62676-1-2 IEC:2013 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms, definitions and abbreviations 10 3.1 Terms and definitions 10 3.2 Abbreviations 24 4 Performance requirements . 26 4.1 General . 26 4.2 Network time services . 27 4.2.1 General . 27 4.2.
20、2 Real-time clock 27 4.2.3 Accurate time services for the transport stream . 27 4.3 Video transmission timing requirements 27 4.3.1 General . 27 4.3.2 Connection time 27 4.3.3 Connection capabilities 28 4.4 Performance requirements on streaming video 28 4.4.1 Introduction latency, jitter, throughput
21、 28 4.4.2 Requirements on network jitter 29 4.4.3 Packet loss 29 4.4.4 Level of performance . 30 4.4.5 Packet jitter . 30 4.4.6 Monitoring of interconnections . 31 5 IP video transmission network design requirements 31 5.1 General . 31 5.2 Overview . 31 5.3 Digital network planning 32 5.3.1 General
22、. 32 5.3.2 Critical requirements for IP video streaming performance 32 5.3.3 Availability . 33 5.4 Additional architecture principles . 34 5.5 Network design . 34 5.5.1 Small unicast network 34 5.5.2 Small multicast video network 35 5.5.3 Hierarchical VSS network 35 5.5.4 Effective video IP network
23、capacity planning . 36 5.5.5 Wireless interconnections 37 5.6 Replacement and redundancy . 37 5.6.1 Redundant network design 37 5.6.2 Availability . 38 5.7 Centralized and decentralized network recording and video content analytics . 38 6 General IP requirements . 39 6.1 General . 39 6.2 IP ISO Laye
24、r 3 39 6.3 Addressing 39 62676-1-2 IEC:2013 3 6.4 Internet control message protocol (ICMP) 40 6.4.1 General . 40 6.4.2 Diagnostic requirements 40 6.5 Diagnostics . 41 6.6 IP multicast . 41 6.6.1 General . 41 6.6.2 Internet group multicast protocol (IGMP) requirements 41 7 Video streaming requirement
25、s 41 7.1 General . 41 7.2 Transport protocol . 42 7.2.1 General . 42 7.2.2 JPEG over RTP . 42 7.2.3 JPEG over HTTP . 42 7.3 Documentation and specification . 43 7.3.1 General . 43 7.3.2 Non-compliant, proprietary and vendor specific payload formats 43 7.3.3 Receiving unsupported RTP payload formats.
26、 44 7.4 Streaming of metadata 44 7.4.1 General . 44 7.4.2 XML documents as payload . 44 7.4.3 General . 44 8 Video stream control requirements . 45 8.1 General . 45 8.2 Usage of RTSP in video transmission devices . 45 8.2.1 General . 45 8.2.2 The use of RTSP with multicast . 45 8.3 RTSP standards tr
27、ack requirements 46 8.3.1 General . 46 8.3.2 High level IP video streaming and control interfaces 46 8.3.3 Minimal RTSP method and header implementation 46 8.3.4 RTSP authentication 46 9 Device discovery and description requirements 46 10 Eventing requirements 47 11 Network device management require
28、ments. 47 11.1 General . 47 11.2 IP video MIB example 48 11.3 The SNMP agent and manager for video transmission devices 48 11.4 Performance requirements on the SNMP agent . 49 11.5 VSS SNMP trap requirements for event management 50 12 Network security requirements . 50 12.1 General . 50 12.2 Transpo
29、rt level security requirements for SG4 transmission 51 Bibliography 52 Figure 1 Network buffer . 29 Figure 2 Network latency, jitter, loss 33 Figure 3 System design . 34 4 62676-1-2 IEC:2013 Figure 4 Small network 35 Figure 5 Multicast network . 35 Figure 6 Hierarchical network. 36 Figure 7 Redundan
30、t network 38 Figure 8 MIB structure . 48 Table 1 Time service accuracy for video transport stream 27 Table 2 Interconnections Timing requirements 28 Table 3 Video transmission network requirements . 28 Table 4 Video transmission network requirements . 28 Table 5 Performance requirements video stream
31、ing and stream display 30 Table 6 Video stream network packet jitter . 31 Table 7 Monitoring of interconnections . 31 62676-1-2 IEC:2013 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ VIDEO SURVEILLANCE SYSTEMS FOR USE IN SECURITY APPLICATIONS Part 1-2: System requirements Performance requirements fo
32、r video transmission 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 all questions concerning s
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42、 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 62676-1-2 has been prepared by IEC technical committee 79: Alarm and electronic
43、 security systems. The text of this standard is based on the following documents: FDIS Report on voting 79/433/FDIS 79/446/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 publication has been drafted in acco
44、rdance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62676, published under the general title Video surveillance systems for use in security applications, can be found on the IEC website. 6 62676-1-2 IEC:2013 The committee has decided that the contents of this publication will
45、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 The colour inside logo on the cove
46、r 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. 62676-1-2 IEC:2013 7 INTRODUCTION The IEC Technical Committee 79 in charge of alarm and el
47、ectronic 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 standards on video surveillance system i
48、s 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 requirements. This IEC 62676-1 series
49、consists of 2 subparts, numbered parts 1-1 and 1-2 respectively: IEC 62676-1-1, System requirements General IEC 62676-1-2, System requirements Performance requirements for video transmission The second subpart of this IEC 62676-1 series applies to video transmission. The purpose of the transmission system in a Video Surveillance System (VSS) installation is to provide reliable tran
