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BS EN 62676-1-2:2014:2016 Edition

BS EN 62676-1-2:2014:2016 Edition

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Video surveillance systems for use in security applications – System requirements. Performance requirements for video transmission

Published By Publication Date Number of Pages
BSI 2016 62
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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 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 architecture 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 which may be applied to all IP security devices even beyond IP video. For this reason requirements are introduced in a second step for compliance to basic streaming protocols, used in this standard for video streaming and stream control. Since security applications need high availability and reliability, general means for the transmission of the video status and health check events have to be covered. These are defined in general requirements on eventing and network device management. In security proper maintenance and setup is essential for the functioning of the video transmission device. Locating streaming devices and their capabilities is a basic requirement and covered in ´device discovery and description´.

PDF Catalog

PDF Pages PDF Title
7 English
CONTENTS
10 INTRODUCTION
11 1 Scope
2 Normative references
13 3 Terms, definitions and abbreviations
3.1 Terms and definitions
27 3.2 Abbreviations
29 4 Performance requirements
4.1 General
30 4.2 Network time services
4.2.1 General
4.2.2 Real-time clock
4.2.3 Accurate time services for the transport stream
4.3 Video transmission timing requirements
4.3.1 General
4.3.2 Connection time
Tables
Table 1 – Time service accuracy for video transport stream
31 4.3.3 Connection capabilities
4.4 Performance requirements on streaming video
4.4.1 Introduction latency, jitter, throughput
Table 2 – Interconnections – Timing requirements
Table 3 – Video transmission network requirements
Table 4 – Video transmission network requirements
32 4.4.2 Requirements on network jitter
4.4.3 Packet loss
Figures
Figure 1 – Network buffer
33 4.4.4 Level of performance
4.4.5 Packet jitter
Table 5 – Performance requirements video streaming and stream display
34 4.4.6 Monitoring of interconnections
5 IP video transmission network design requirements
5.1 General
5.2 Overview
Table 6 – Video stream network packet jitter
Table 7 – Monitoring of interconnections
35 5.3 Digital network planning
5.3.1 General
5.3.2 Critical requirements for IP video streaming performance
36 5.3.3 Availability
Figure 2 – Network latency, jitter, loss
37 5.4 Additional architecture principles
5.5 Network design
5.5.1 Small unicast network
Figure 3 – System design
38 5.5.2 Small multicast video network
5.5.3 Hierarchical VSS network
Figure 4 – Small network
Figure 5 – Multicast network
39 5.5.4 Effective video IP network capacity planning
Figure 6 – Hierarchical network
40 5.5.5 Wireless interconnections
5.6 Replacement and redundancy
5.6.1 Redundant network design
41 5.6.2 Availability
5.7 Centralized and decentralized network recording and video content analytics
Figure 7 – Redundant network
42 6 General IP requirements
6.1 General
6.2 IP – ISO Layer 3
6.3 Addressing
43 6.4 Internet control message protocol (ICMP)
6.4.1 General
6.4.2 Diagnostic requirements
44 6.5 Diagnostics
6.6 IP multicast
6.6.1 General
6.6.2 Internet group multicast protocol (IGMP) requirements
7 Video streaming requirements
7.1 General
45 7.2 Transport protocol
7.2.1 General
7.2.2 JPEG over RTP
7.2.3 JPEG over HTTP
46 7.3 Documentation and specification
7.3.1 General
7.3.2 Non-compliant, proprietary and vendor specific payload formats
47 7.3.3 Receiving unsupported RTP payload formats
7.4 Streaming of metadata
7.4.1 General
7.4.2 XML documents as payload
7.4.3 General
48 8 Video stream control requirements
8.1 General
8.2 Usage of RTSP in video transmission devices
8.2.1 General
8.2.2 The use of RTSP with multicast
49 8.3 RTSP standards track requirements
8.3.1 General
8.3.2 High level IP video streaming and control interfaces
8.3.3 Minimal RTSP method and header implementation
8.3.4 RTSP authentication
9 Device discovery and description requirements
50 10 Eventing requirements
11 Network device management requirements
11.1 General
51 11.2 IP video MIB example
11.3 The SNMP agent and manager for video transmission devices
Figure 8 – MIB structure
52 11.4 Performance requirements on the SNMP agent
53 11.5 VSS SNMP trap requirements for event management
12 Network security requirements
12.1 General
54 12.2 Transport level security requirements for SG4 transmission
55 Bibliography

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