Video surveillance systems for use in security applications - Part 2-2: Video transmission protocols - IP interoperability implementation based on HTTP and REST services

IEC 62676-2-2:2013 specifies a compliant IP video protocol based on HTTP and REST services. Video transmission devices are often equipped with web servers that respond to HTTP requests. The HTTP response may contain XML content (for GET actions), XML response information (for SET actions), or various text/binary content (for retrieval of configuration data, etc.). REST is an approach to creating services that expose all information as resources in a uniform way. A video transmission device supporting compliance to the requirements of this standard based on HTTP and REST Services as described in this document is declared as compatible to ´IEC 62676-2 HTTP and REST interoperability.´

Systèmes de vidéosurveillance destinés à être utilisés dans les applications de sécurité - Partie 2-2: Protocoles de transmission vidéo - Mise en oeuvre de l'intéropérabilité IP en fonction des services HTTP et REST

La CEI 62676-2-2:2013 spécifie un protocole vidéo IP reposant sur les services HTTP et REST. Les dispositifs de vidéotransmission sont souvent équipés de serveurs web qui répondent aux requêtes HTTP. La réponse HTTP peut posséder un contenu XML (pour les actions GET), des informations de réponse XML (pour les actions SET) ou divers contenus texte/binaire (pour l'extraction de données de configuration, etc.). REST est une approche de création de services qui expose uniformément toutes les informations sous forme de ressources. Un dispositif de vidéotransmission satisfaisant aux exigences de la présente Norme sur la base des services HTTP et REST tel que décrit dans le présent document est déclaré comme étant compatible avec "l'interopérabilité HTTP et REST de la CEI 62676-2".

General Information

Status
Published
Publication Date
06-Nov-2013
Current Stage
PPUB - Publication issued
Start Date
07-Nov-2013
Completion Date
07-Nov-2013
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IEC 62676-2-2
Edition 1.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Video surveillance systems for use in security applications –
Part 2-2: Video transmission protocols – IP interoperability implementation
based on HTTP and REST services
Systèmes de vidéosurveillance destinés à être utilisés dans les applications
de sécurité –
Partie 2-2: Protocoles de transmission vidéo – Mise en œuvre de
l'interopérabilité IP en fonction des services HTTP et REST
IEC 62676-2-2:2013
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62676-2-2
Edition 1.0 2013-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Video surveillance systems for use in security applications –
Part 2-2: Video transmission protocols – IP interoperability implementation
based on HTTP and REST services
Systèmes de vidéosurveillance destinés à être utilisés dans les applications
de sécurité –
Partie 2-2: Protocoles de transmission vidéo – Mise en œuvre de
l'interopérabilité IP en fonction des services HTTP et REST
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XF
ICS 13.320 ISBN 978-2-8322-1188-5

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 agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 62676-2-2  IEC:2013
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope ............................................................................................................................... 7

2 Normative references ....................................................................................................... 7

3 Abbreviations ................................................................................................................... 8

4 Overview ........................................................................................................................ 10

5 Design considerations .................................................................................................... 10

5.1 General ................................................................................................................. 10

5.2 REST overview ...................................................................................................... 11

5.3 Conformance ......................................................................................................... 11

5.3.1 General ..................................................................................................... 11

5.3.2 Minimum API set ....................................................................................... 11

5.3.3 XML requirements ..................................................................................... 11

5.3.4 Protocol requirements................................................................................ 12

5.4 HTTP methods and REST ..................................................................................... 12

5.5 HTTP status codes and REST ............................................................................... 12

5.6 Unique identifiers .................................................................................................. 14

5.7 ID encoding ........................................................................................................... 14

6 Architecture and namespace .......................................................................................... 15

7 System flow .................................................................................................................... 17

7.1 General ................................................................................................................. 17

7.2 Service discovery .................................................................................................. 18

7.3 Persistent connections .......................................................................................... 18

7.4 Authentication ....................................................................................................... 19

7.5 Access restrictions ................................................................................................ 19

7.6 Setting configurations ............................................................................................ 20

7.7 Getting configurations ........................................................................................... 20

7.8 Getting capabilities ................................................................................................ 21

7.9 Uploading data ...................................................................................................... 22

7.10 Receiving data ...................................................................................................... 22

7.11 Operations ............................................................................................................ 22

7.12 Diagnostics ........................................................................................................... 23

7.13 Response status .................................................................................................... 23

7.13.1 General ..................................................................................................... 23

7.13.2 Status code ............................................................................................... 23

7.13.3 Status string .............................................................................................. 24

7.13.4 ID .............................................................................................................. 24

7.14 Processing rules .................................................................................................... 24

8 XML modeling ................................................................................................................ 24

8.1 File format ............................................................................................................. 24

8.2 Data structures ...................................................................................................... 24

8.3 Lists ...................................................................................................................... 24

8.4 Capabilities ........................................................................................................... 24

9 Custom services and resources ...................................................................................... 26

10 Interface design .............................................................................................................. 26

10.1 General ................................................................................................................. 26

---------------------- Page: 4 ----------------------
62676-2-2  IEC:2013 – 3 –

10.2 Protocol ................................................................................................................. 26

10.3 Hostname .............................................................................................................. 27

10.4 Port ....................................................................................................................... 27

10.5 URI ....................................................................................................................... 27

10.6 Query string .......................................................................................................... 27

10.7 Resource description ............................................................................................. 27

11 Standard resource descriptions ...................................................................................... 28

11.1 General ................................................................................................................. 28

11.2 index ..................................................................................................................... 28

11.3 indexr .................................................................................................................... 28

11.4 description ............................................................................................................ 29

11.5 capabilities ............................................................................................................ 29

11.6 Schemas ............................................................................................................... 29

11.6.1 General ..................................................................................................... 29

11.6.2 ResourceDescription ................................................................................. 30

11.6.3 ResourceList ............................................................................................. 30

11.6.4 QueryStringParameterList ......................................................................... 30

11.6.5 responseStatus ......................................................................................... 30

11.6.6 service.xsd ................................................................................................ 31

Annex A (normative) IP Media Device API Specification Version 1.0 .................................... 34

Bibliography ........................................................................................................................ 122

Figure 1 – PSIA service architecture example ....................................................................... 15

Figure A.1 – Motion detection grid with two detection regions ............................................. 108

Table 1 – HTTP methods ...................................................................................................... 12

Table 2 – HTTP status codes and REST ............................................................................... 13

Table 3 – Resource names ................................................................................................... 16

Table 4 – Service URLs ........................................................................................................ 16

Table 5 – HTTP requests ...................................................................................................... 23

Table 6 – Capability attributes .............................................................................................. 25

---------------------- Page: 5 ----------------------
– 4 – 62676-2-2  IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VIDEO SURVEILLANCE SYSTEMS FOR USE
IN SECURITY APPLICATIONS –
Part 2-2: Video transmission protocols –
IP interoperability implementation based
on HTTP and REST services
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 standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

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 62676-2-2 has been prepared by IEC technical committee 79:

Alarm and electronic security systems.
The text of this standard is based on the following documents:
FDIS Report on voting
79/436/FDIS 79/449/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 accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 6 ----------------------
62676-2-2  IEC:2013 – 5 –

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.

The committee has decided that the contents 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.
---------------------- Page: 7 ----------------------
– 6 – 62676-2-2  IEC:2013
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

interoperability 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 has its own clauses on scope, references, definitions and requirements

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 transmission protocols – IP interoperability implementation based on

Web services

This second subpart of this IEC 62676-2 series covers IP interoperability implementation

based on HTTP and REST services. It is based on the requirements for IP video transmission

protocols covered in IEC 62676-2-1, which defines protocol requirements to be fulfilled by any

high-level IP video device interface.
---------------------- Page: 8 ----------------------
62676-2-2  IEC:2013 – 7 –
VIDEO SURVEILLANCE SYSTEMS FOR USE
IN SECURITY APPLICATIONS –
Part 2-2: Video transmission protocols –
IP interoperability implementation based
on HTTP and REST services
1 Scope

This part of IEC 62676 specifies a compliant IP video protocol based on HTTP and REST

services.

Video transmission devices are often equipped with web servers that respond to HTTP

requests. The HTTP response may contain XML content (for GET actions), XML response

information (for SET actions), or various text/binary content (for retrieval of configuration data,

etc.). REST is an approach to creating services that expose all information as resources in a

uniform way. The ease of using REST is its uniform interface for operations. Since everything

is represented as a resource, create, retrieve, update, and delete (CRUD) operations use the

same URI. This specification leverages the features of HTTP and REST for IP video

transmission.

A video transmission device supporting compliance to the requirements of this standard

based on HTTP and REST Services as described in this document is declared as compatible

to ´IEC 62676-2 HTTP and REST interoperability.´
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.

ISO/IEC 10918-1, Information technology – Digital compression and coding of continuous-

tone still images: Requirements and guidelines

ISO/IEC 11172-3:1993, Information technology – Coding of moving pictures and associated

audio for digital storage media at up to about 1,5 Mbit/s – Part 3: Audio

ISO/IEC 13818-2, Information technology – Generic coding of moving pictures and associated

audio information: Video

ISO/IEC 14496-2:2004, Information technology – Coding of audio-visual objects – Part 2:

Visual

ISO/IEC 14496-3, Information technology – Coding of audio-visual objects – Part 3: Audio

ISO/IEC 14496-10:2012, Information technology – Coding of audio-visual objects – Part 10:

Advanced video coding

IETF RFC 1213, Management Information Base for Network Management of TCP/IP-based

internets: MIB-II
---------------------- Page: 9 ----------------------
– 8 – 62676-2-2  IEC:2013
IETF RFC 1945, Hypertext Transfer Protocol – HTTP/1.0

IETF RFC 2046, Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types

IETF RFC 2250, Format de charge utile RTP pour la video MPEG1/MPEG2
IETF RFC 2326, Real Time Streaming Protocol (RTSP)
IETF RFC 2435, Format de charge utile RTP pour l video JPEG
IETF RFC 2616, Hypertext Transfer Protocol – HTTP/1.1
IETF RFC 2617, HTTP Authentication: Basic and Digest Access Authentication
IETF RFC 2818, HTTP Over TLS
IETF RFC 3016, Format de charge utile RTP pour flux audio/video MPEG-4
IETF RFC 3550, RTP: A Transport Protocol for Real-Time Applications
IETF RFC 3551, RTP Profile for Audio and Video Conferences with Minimal Control
IETF RFC 3629, UTF-8 un format de transformation de l’ISO 10646

IETF RFC 3640, Format de charge utile RTP pour le transport de flux élémentaires MPEG-4

IETF RFC 3984, Format de charge utile RTP pour video H.264
IETF RFC 4566, SDP: Session Description Protocol

ITU-T Recommendation G.726, 40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code

Modulation (ADPCM)

ITU-T Recommendation H.264, Advanced video coding for generic audiovisual services

ITU-T Recommendation T.81, Information technology – Digital compression and coding of

continuous-tone still images – Requirements and guidelines
3 Abbreviations
For the purposes of this document, the following abbreviations apply.
AAC Advanced Audio Coding
API Application Program Interface
AVP Audio/Video Profile
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
HTTP Hypertext Transfer Protocol
HTTPS Hypertext Transfer Protocol over Secure Socket Layer
IETF Internet Engineering Task Force
IO I/O Input/Output
IP Internet Protocol
---------------------- Page: 10 ----------------------
62676-2-2  IEC:2013 – 9 –
IPv4 Internet Protocol Version 4
IPv6 Internet Protocol Version 6
ISO International Standards Organization
ITU International telecommunications Union
JFIF JPEG File Interchange Format
JPEG Joint Photographic Expert Group
MPEG Moving Pictures Experts Group
NTP Network Time Protocol
NVS Network Video Storage Device
POSIX Portable Operating System Interface
PTZ Pan / Tilt / Zoom
QoS Quality of Service
REST Representational State Transfer
RFC (Request for comment) IETF Standards Draft
RTCP Real Time Control Protocol.
RTP Real-time Transport Protocol
RTSP Real Time Streaming Protocol
SDP Session Description Protocol
SHA Secure Hash Algorithm
SOAP Simple Object Access Protocol
SRTP Secure Real-time Transport Protocol
SSID Service Set ID
SSL Secure Sockets Layer SAML Security Assertion Markup Language
TCP Transmission Control Protocol
TCP/IP Transmission Control Protocol / Internet Protocol
TKIP Temporal Key Integrity Protocol
TLS Transport Layer Security
TTL Time-to-live
UDP User Datagram Protocol
UPnP Universal Plug and Play
URI Uniform Resource Identifier
URL Uniform Resource Locator
UTC Universal Time Coordinated
UTF Unicode Transformation Format
UTF-8 8-bit Unicode Transformation Format URN Uniform Resource Name
UUID Universally Unique Identifier
VMS Video management system
VT Video Transmission
VTD Video Transmission device
W3C World Wide Web Consortium
WPA Wi-Fi Protected Access
XML eXtensible Markup Language
Zeroconf Zero Configuration Networking
---------------------- Page: 11 ----------------------
– 10 – 62676-2-2  IEC:2013
4 Overview

Security and/or network management applications require the ability to change configurations

and control the behaviours of IP video devices – cameras, encoders, decoders, recorders,

etc. This functionality can be achieved by sending a standard HTTP(S) request to the unit.

The basic principle of this IP Interoperability is to specify and define HTTP(S) application

programming interfaces (APIs) for VT devices and their functionality; namely, for

setting/retrieving various configurations, and controlling device behaviours.

The REST Service Model Version 1.1 is intended to assist the IEC working groups in creating

new protocols or converting contributed protocols to a standard service model that will be

common to all endorsed specifications. Adherence to this service model will ensure

interoperability between compliant protocols.

This model is similar in nature to Web services but is geared towards lightweight computing

requirements on devices. As such, these protocols will not use Simple Object Access Protocol

(SOAP) as defined by the W3C-defined Web services but instead will use a simplified XML

schema and/or xml schema documents (.xsd’s).

Unless otherwise noted, all specifications of this clause should treat all configuration and

management aspects as resources utilizing the REpresentational State Transfer (REST)

architecture.

The Service Model is based on a REST architecture. While REST specifies that all interfaces

are defined as resources, in the Model of this standard these resources are grouped by

service. This architecture provides a convenient way to group related resources within a

hierarchical namespace and lends itself to service discovery and future expansion.

Anybody is welcome to add services at any time provided said services adhere to the service

model as defined herein. Every effort should be taken to maintain full backward compatibility

when adding new services. The Service Model is designed to support expansion with

backwards compatibility.
5 Design considerations
5.1 General

Network-attached devices are often equipped with a web server to maintain various web

pages. These pages allow the devices to be configured through an internet browser. It is

natural to reuse this web server and the HTTP protocol in order for external applications to

configure an
...

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