1、BSI Standards PublicationVideo surveillance systems for use in security applicationsPart 1-2: System requirements Performance requirements for video transmissionBS EN 62676-1-2:2014Incorporating corrigendum April 2015National forewordThis British Standard is the UK implementation of EN 62676-1-2:201
2、4, The UK participation in its preparation was entrusted by TechnicalCommittee GW/1, Electronic security systems, to Subcommittee GW/1/10,Closed circuit television (CCTV).A list of organizations represented on this subcommittee can be obtained onrequest to its secretary.This publication does not pur
3、port to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 201Published by BSI Standards Limited 2016ISBN 978 0 580 90613 8ICS 13.320Compliance with a British Standard cannot confer immunity fromlegal obligations.Th
4、is British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62676-1-2:201431 March 2016 Implementation of CENELEC corrigendumApril 2015: EN title and Foreword
5、pages updatedwith supersession detailsincorporating corrigendum April 2015. It is identical to IEC 62676-1-2:2013. It supersedes BS EN 50132-5-1:2011 and BS EN 50132-5-2:2011, which are withdrawn.6.EUROPEAN STANDARD EN 62676-1-2 NORME EUROPENNE EUROPISCHE NORM March 2014 CENELEC European Committee f
6、or Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELE
7、C members. Ref. No. EN 62676-1-2:2014 E ICS 13.320 English version Video surveillance systems for use in security applications - Part 1-2: System requirements Performance requirements for video transmission (IEC 62676-1-2:2013) Systmes de vidosurveillance destins tre utiliss dans les applications de
8、 scurit - Part 1-2: Exigences systmes - Exigences de performances pour la transmission vido (CEI 62676-1-2:2013) Videoberwachungsanlagen fr Sicherungsanwendungen - Teil 1-2: Allgemeine Anforderungen an die Videobertragung (IEC 62676-1-2:2013) This European Standard was approved by CENELEC on 2013-12
9、-03. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obta
10、ined on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified t
11、o the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece
12、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Supersedes EN 50132-5-1:2011 and EN 50132-5-2:2011.EN 62676-1-2:2014 - 2 - Foreword The text of
13、 document 79/433/FDIS, future edition 1 of IEC 62676-1-2, prepared by IEC TC 79 “Alarm and electronic security systems“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62676-1-2:2014. The following dates are fixed: latest date by which the document has to be implemented
14、at national level by publication of an identical national standard or by endorsement (dop) 2014-09-03 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-12-03 Attention is drawn to the possibility that some of the elements of this document may b
15、e the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62676-1-2:2013 was approved by CENELEC as a European Standard without any modification. In the official versio
16、n, for Bibliography, the following notes have to be added for the standards indicated: IEC 62676-2-3 NOTE Harmonised as EN 62676-2-3. ISO 19111 NOTE Harmonised as EN ISO 19111. ISO 19115 NOTE Harmonised as EN ISO 19115. BS EN 62676-1-2:2014This document supersedes EN 50132-5-1:2011 and EN 50132-5-2:
17、2011.- 3 - EN 62676-1-2:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated reference
18、s, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD
19、Year IEC 61709 - Electric components - Reliability - Reference conditions for failure rates and stress models for conversion EN 61709 2011 IEC/TR 62380 - Reliability data handbook - Universal model for reliability prediction of electronics components, PCBs and equipment - - IEC 62676-1-1 - Video sur
20、veillance systems for use in security applications - Part 1-1: Video system requirements EN 62676-1-1 - IEC 62676-2-1 - Video surveillance systems for use in security applications - Part 2-1: Video transmission protocols - General requirements EN 62676-2-1 - ISO/IEC 10646 - Information technology -
21、Universal Coded Character Set (UCS) - - ISO/IEC 13818-9 - Information technology - Generic coding of moving pictures and associated audio information - Part 9: Extension for real time interface for system decoders - - ISO/IEC 14496-2 - Information Technology Coding of audio-visual objects - Part 2:
22、Visual - - ISO/IEC 14496-3 - Information technology - Coding of audio-visual objects - Part 3: Audio - - ISO/IEC 14496-10 - Information technology - Coding of audio-visual objects - Part 10: Advanced Video Coding - - ITU-T Recommendation G.711 - Pulse code modulation (PCM) of voice frequencies - - I
23、TU-T Rec .726 - General Aspects of Digital Transmission Systems, Terminal Equipment - 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM) - - IEEE Std 1413.1 - IEEE Guide for Selecting and Using Reliability Predictions Based on IEEE 1413 - - IETF RFC 1122 - Requirements for Int
24、ernet Hosts - Communication Layers - - IETF RFC 1157 - Simple Network Management Protocol (SNMP) - - IETF RFC 1441 - Introduction to version 2 of the Internet-standard Network Management Framework - - IETF RFC 2030 - Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI - - BS EN 6267
25、6-1-2:2014EN 62676-1-2:2014 - 4 - Publication Year Title EN/HD Year RFC 2069 - Digest Access Authentication - - IETF RFC 2131 - Dynamic Host Configuration Protocol - - IETF RFC 2246 - The TLS Protocol Version 1.0 - - IETF RFC 2326 1998 Real time Streaming protocol (RTSP) - - IETF RFC 2435 - RTP Payl
26、oad Format for JPEG-compressed Video - - IETF RFC 2453 - Routing Information Protocol - - IETF RFC 2617 - HTTP Authentication: Basic and Digest Access Authentication - - IETF RFC 3016 - RTP Payload Format for MPEG-4 Audio/Visual Streams - - IETF RFC 3268 - Advanced Encryption Standard (AES) Ciphersu
27、ites for Transport Layer Security (TLS) - - IETF RFC 3315 - Dynamic Host Configuration Protocol for IPv6 (DHCPv6) - - IETF RFC 3410 - Introduction and Applicability Statements for Internet Standard Management Framework - - IETF RFC 3550 - A Transport Protocol for Real-Time Applications - - IETF RFC
28、3551 - RTP Profile for Audio and Video Conferences with Minimal Control - - IETF RFC 3984 - RTP Payload Format for H.264 Video - - IETF RFC 4346 - The Transport Layer Security (TLS) Protocol Version 1.1 - - IETF RFC 4541 - IGMP and MLD Snooping Switches - - IETF RFC 4566 - SDP: Session Description P
29、rotocol - - IETF RFC 4607 - Source-Specific Multicast for IP - - IETF RFC 4862 - IPv6 Stateless Address Autoconfiguration - - BS EN 62676-1-2:2014 2 62676-1-2 IEC:2013 CONTENTS INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms, definitions and abbreviations 10 3.1 Terms and definitions
30、 10 3.2 Abbreviations 24 4 Performance requirements . 26 4.1 General . 26 4.2 Network time services . 27 4.2.1 General . 27 4.2.2 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.
31、3.3 Connection capabilities 28 4.4 Performance requirements on streaming video 28 4.4.1 Introduction latency, jitter, throughput 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 vid
32、eo transmission network design requirements 31 5.1 General . 31 5.2 Overview . 31 5.3 Digital network planning 32 5.3.1 General . 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 Sma
33、ll 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 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
34、decentralized network recording and video content analytics . 38 6 General IP requirements . 39 6.1 General . 39 6.2 IP ISO Layer 3 39 6.3 Addressing 39 BS EN 62676-1-2:201462676-1-2 IEC:2013 3 6.4 Internet control message protocol (ICMP) 40 6.4.1 General . 40 6.4.2 Diagnostic requirements 40 6.5 Di
35、agnostics . 41 6.6 IP multicast . 41 6.6.1 General . 41 6.6.2 Internet group multicast protocol (IGMP) requirements 41 7 Video streaming requirements 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 specificat
36、ion . 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. 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
37、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 track 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
38、 46 8.3.4 RTSP authentication 46 9 Device discovery and description requirements 46 10 Eventing requirements 47 11 Network device management requirements. 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
39、 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 Transport level security requirements for SG4 transmission 51 Bibliography 52 Figure 1 Network buffer . 29 Figure 2 Network latency, jitter, loss 33 Figure 3 S
40、ystem design . 34 BS EN 62676-1-2:2014 4 62676-1-2 IEC:2013 Figure 4 Small network 35 Figure 5 Multicast network . 35 Figure 6 Hierarchical network. 36 Figure 7 Redundant network 38 Figure 8 MIB structure . 48 Table 1 Time service accuracy for video transport stream 27 Table 2 Interconnections Timin
41、g requirements 28 Table 3 Video transmission network requirements . 28 Table 4 Video transmission network requirements . 28 Table 5 Performance requirements video streaming and stream display 30 Table 6 Video stream network packet jitter . 31 Table 7 Monitoring of interconnections . 31 BS EN 62676-1
42、-2:201462676-1-2 IEC:2013 7 INTRODUCTION The IEC Technical Committee 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 in
43、teroperability between products. The IEC 62676 series of standards 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
44、 has its own clauses on scope, references, definitions and requirements. This IEC 62676-1 series 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 s
45、ubpart 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 transmission of video signals between the different types of VSS equipment in security, safety and monitoring applications.
46、 Today VSS reside in security networks using IT infrastructure, equipment and connections within the protected site itself. BS EN 62676-1-2:2014 8 62676-1-2 IEC:2013 VIDEO SURVEILLANCE SYSTEMS FOR USE IN SECURITY APPLICATIONS Part 1-2: System requirements Performance requirements for video transmiss
47、ion 1 Scope This part of IEC 62676 introduces general requirements on video transmission. This standard covers the general requirements for video transmissions on performance, security and conformance to basic IP connectivity, based on available, well-known, international standards. Clauses 4 and 5
48、of this standard define the minimum performance requirements on video transmission for security applications in IP networks. In surveillance applications the requirements on timing, quality and availability are strict and defined in the last section of this standard. Guidelines for network architect
49、ure are given, how these requirements can be fulfilled. Clause 6 and the next clauses of this standard define requirements on basic IP connectivity of video transmission devices to be used in security applications. If a video transmission device is used in security, certain basic requirements apply. First of all a basic understanding of IP connectivity needs to be introduced which requests the device to be compliant to fundamental network protocols. These could be requirements whic
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