IEC 62676-2-31:2019

IEC 62676-2-31 ®
Edition 1.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Video surveillance systems for use in security applications –
Part 2-31: Live streaming and control based on web services

Systèmes de vidéosurveillance destinés à être utilisés dans les applications de
sécurité –
Partie 2-31: Transmission en continu en direct et contrôle basé sur les services
web
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IEC 62676-2-31 ®
Edition 1.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Video surveillance systems for use in security applications –

Part 2-31: Live streaming and control based on web services

Systèmes de vidéosurveillance destinés à être utilisés dans les applications de

sécurité –
Partie 2-31: Transmission en continu en direct et contrôle basé sur les services

web
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.320 ISBN 978-2-8322-7035-6

– 2 – IEC 62676-2-31:2019  IEC 2019
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 12
4 Overview . 13
4.1 General . 13
4.2 Device IO . 13
4.3 Imaging configuration . 13
4.4 Media configuration . 13
4.4.1 Media profiles . 13
4.4.2 Video source mode . 16
4.5 Real-time streaming . 16
4.6 PTZ Control . 17
4.7 Analytics . 18
4.8 Interfaces . 20
5 Device IO service . 20
5.1 General . 20
5.2 VideoOutputs . 20
5.2.1 General . 20
5.2.2 GetVideoOutputs . 20
5.3 VideoOutputConfiguration . 21
5.3.1 GetVideoOutputConfiguration . 21
5.3.2 SetVideoOutputConfiguration . 21
5.3.3 GetVideoOutputConfigurationOptions . 22
5.4 VideoSources . 22
5.4.1 General . 22
5.4.2 GetVideoSources . 22
5.5 AudioOutputs . 22
5.5.1 General . 22
5.5.2 GetAudioOutputs . 23
5.6 AudioSources . 23
5.6.1 General . 23
5.6.2 GetAudioSources . 23
5.7 Capabilities . 23
6 Media service . 24
6.1 General . 24
6.2 Media profile methods . 25
6.2.1 Create media profile . 25
6.2.2 Get media profiles . 25
6.2.3 Add one or more configurations to a profile . 26
6.2.4 Remove one or more configurations from a profile . 27
6.2.5 Delete media profile . 27
6.3 Media configurations . 28
6.3.1 General . 28
6.3.2 Video source configuration . 28

6.3.3 Video encoder configuration . 29
6.3.4 Audio source configuration . 29
6.3.5 Audio encoder configuration . 29
6.3.6 PTZ Configuration . 29
6.3.7 Analytics configuration . 29
6.3.8 Metadata configuration . 30
6.3.9 Audio output configuration . 30
6.3.10 Audio decoder configuration . 31
6.4 Media Configuration Methods . 31
6.4.1 General . 31
6.4.2 Get configurations . 31
6.4.3 Modify a configuration . 32
6.4.4 Get configuration options . 32
6.4.5 GetVideoEncoderInstances. 33
6.5 GetStreamUri . 34
6.6 GetSnapshotUri . 35
6.7 Multicast . 35
6.7.1 General . 35
6.7.2 Start multicast streaming . 36
6.7.3 Stop multicast streaming . 36
6.8 SetSynchronizationPoint . 37
6.9 Video source mode . 37
6.9.1 General . 37
6.9.2 GetVideoSourceModes . 37
6.9.3 SetVideoSourceMode . 38
6.10 OSD (on-screen display) . 38
6.10.1 General . 38
6.10.2 CreateOSD . 39
6.10.3 DeleteOSD . 40
6.10.4 GetOSDs . 40
6.10.5 SetOSD . 41
6.10.6 GetOSDOptions . 41
6.11 Privacy masks . 42
6.11.1 General . 42
6.11.2 CreateMask . 43
6.11.3 DeleteMask . 43
6.11.4 GetMasks . 44
6.11.5 SetMask . 44
6.11.6 GetMaskOptions . 45
6.12 Capabilities . 45
6.13 Events . 46
6.13.1 ProfileChange . 46
6.13.2 ConfigurationChange . 46
6.13.3 ActiveConnections . 47
6.14 Deviations of media service version 1 . 47
6.14.1 General . 47
6.14.2 Profile management . 47
6.14.3 Configuration listing . 48
6.14.4 Privacy masks . 48

– 4 – IEC 62676-2-31:2019  IEC 2019
7 Imaging service . 48
7.1 General . 48
7.2 Imaging settings. 48
7.2.1 Parameters . 48
7.2.2 GetImagingSettings . 50
7.2.3 SetImagingSettings. 51
7.2.4 GetOptions . 51
7.3 Imaging Presets . 52
7.3.1 General . 52
7.3.2 GetPresets . 52
7.3.3 GetCurrentPreset . 52
7.3.4 SetCurrentPreset . 53
7.4 Focus operations . 54
7.4.1 Move . 54
7.4.2 GetMoveOptions . 54
7.4.3 Stop. 55
7.4.4 GetImagingStatus . 55
7.5 Capabilities . 56
8 PTZ service . 56
8.1 General . 56
8.2 PTZ node . 57
8.2.1 General . 57
8.2.2 GetNodes . 57
8.2.3 GetNode . 57
8.3 PTZ configuration . 58
8.3.1 General . 58
8.3.2 GetConfigurations . 59
8.3.3 GetConfiguration . 59
8.3.4 GetConfigurationOptions . 60
8.3.5 SetConfiguration . 60
8.3.6 GetCompatibleConfigurations . 61
8.4 Move operations . 61
8.4.1 General . 61
8.4.2 AbsoluteMove . 61
8.4.3 RelativeMove . 62
8.4.4 ContinuousMove . 63
8.4.5 GeoMove . 64
8.4.6 Stop. 66
8.4.7 GetStatus . 66
8.5 Preset operations . 67
8.5.1 General . 67
8.5.2 SetPreset . 67
8.5.3 GetPresets . 68
8.5.4 GotoPreset . 69
8.5.5 RemovePreset . 69
8.6 Home position operations . 70
8.6.1 General . 70
8.6.2 GotoHomePosition . 70
8.6.3 SetHomePosition . 71

8.7 Auxiliary operations . 71
8.7.1 General . 71
8.7.2 SendAuxiliaryCommand . 71
8.8 Predefined PTZ Spaces . 72
8.8.1 General . 72
8.8.2 Absolute position spaces . 72
8.8.3 Relative translation spaces . 77
8.8.4 Continuous velocity spaces . 78
8.8.5 Speed spaces . 79
8.9 Preset tour operations . 80
8.9.1 General . 80
8.9.2 GetPresetTours . 81
8.9.3 GetPresetTour . 81
8.9.4 GetPresetTourOptions . 82
8.9.5 CreatePresetTour . 82
8.9.6 ModifyPresetTour . 83
8.9.7 OperatePresetTour . 83
8.9.8 RemovePresetTour . 84
8.9.9 Preset tour parameters . 85
8.10 Pan/tilt control direction configuration . 86
8.11 Capabilities . 87
8.12 Events . 88
8.12.1 General . 88
8.12.2 PTZ presets . 88
8.12.3 PresetTours . 88
9 Analytics service. 89
9.1 General . 89
9.2 Scene description interface . 89
9.2.1 Overview . 89
9.2.2 Frame-related content . 89
9.2.3 Scene elements . 92
9.3 Rule interface . 99
9.3.1 General . 99
9.3.2 Rule representation . 100
9.3.3 Rule description language . 100
9.3.4 Operations on rules . 101
9.4 Analytics modules interface . 104
9.4.1 General . 104
9.4.2 Analytics module configuration . 105
9.4.3 Analytics module description language . 105
9.4.4 Operations on analytics modules . 105
9.5 GetAnalyticsModuleOptions . 108
9.6 Capabilities . 109
9.7 Events – Audio Detected . 109
10 Real-time streaming . 110
10.1 General . 110
10.2 Media stream protocol. 110
10.2.1 Transport format . 110
10.2.2 Media transport . 111

– 6 – IEC 62676-2-31:2019  IEC 2019
10.2.3 Synchronization points . 115
10.2.4 JPEG over RTP . 116
10.3 Media control protocol . 118
10.3.1 RTSP stream control . 118
10.3.2 Keep-alive method for RTSP session . 120
10.3.3 RTSP audio and video synchronization . 121
10.3.4 RTSP session for a metadata stream . 121
10.3.5 Multicast streaming . 122
10.3.6 RTSP message example . 122
10.3.7 RTSP over HTTP . 123
10.4 Back channel connection . 123
10.4.1 General . 123
10.4.2 RTSP Require tag . 123
10.4.3 Connection setup for a bi- directional connection . 124
10.4.4 Describe example for a server without backchannel support: . 124
10.4.5 Describe example for a server with ONVIF backchannel support: . 124
10.4.6 Multicast streaming . 126
10.5 Error handling . 126
Annex A (normative) Efficient XML Interchange (EXI) . 127
Annex B (normative) Lens description . 128
Annex C (informative) Specified rules . 130
C.1 General . 130
C.2 LineDetector . 130
C.3 FieldDetector . 130
C.4 LoiteringDetector . 131
C.5 Declarative motion detector . 132
C.6 Counting rule . 133
C.7 Query rule . 134
Annex D (informative) Cell motion detection . 135
D.1 Cell motion detector . 135
D.2 Cell motion analytics engine . 136
D.2.1 General . 136
D.2.2 Module configuration . 137
Annex E (normative) Motion detection . 139
Annex F (normative) Schema files . 141
F.1 Device IO . 141
F.2 Imaging . 156
F.3 Media. 162
F.4 Media 2 . 199
F.5 PTZ . 221
F.6 Analytics . 234
F.7 Common schema . 240
F.8 Streaming metadata schema . 279
Bibliography . 284

Figure 1 – A media profile . 14
Figure 2 – Complete profile configuration . 15
Figure 3 – Layer structure . 16

Figure 4 – Analytics architecture . 19
Figure 5 – Example with four OSD configurations . 39
Figure 6 – Example of screen with mask and coordinate system . 42
Figure 7 – Spherical pan/tilt position space in degrees for a camera mounted on the
ceiling . 74
Figure 8 – Example of changes of pan/tilt control direction by E-Flip and Reverse . 87
Figure 9 – Default frame coordinate system . 91
Figure 10 – RTP header . 111
Figure 11 – RTCP sequence . 114
Figure 12 – RTCP Sender Report . 115
Figure 13 – Media synchronization . 115
Figure 14 – RTP/JPEG packet structure . 116
Figure 15 – Stream control. 119
Figure 16 – Keep alive . 121
Figure B.1 – Optical mapping of angle (α) via radius (R) to normalized x/y coordinates . 128
Figure B.2 – Smooth mapping using B-splines . 128
Figure B.3 – Compensation of vertical axis offset . 129
Figure D.1 – CellLayout of an 8 × 6 CellMotionEngine . 138

Table 1 – Referenced namespaces (with prefix) . 20
Table 2 – Colourspace namespace values . 97
Table 3 – Description of attributes of MotionInCells type . 99
Table 4 – RTP header value . 112
Table 5 – RTSP methods . 120
Table A.1 – ONVIF defined EXI header settings . 127
Table A.2 – ONVIF defined EXI configuration settings . 127
Table C.1 – Loitering Detector rule configuration parameters . 132
Table C.2 – Description of loitering event fields . 132
Table C.3 – Declarative motion detector rule configuration parameters . 133
Table C.4 – Description of declarative motion event fields . 133
Table C.5 – Counting rule configuration parameters . 134
Table C.6 – Description of counting event fields. 134
Table C.7 – Query Rule configuration parameters . 134
Table D.1 – Cell motion detector rule configuration parameters . 136
Table D.2 – Description cell motion detected event fields. 136
Table D.3 – Module configuration parameters . 137
Table D.4 – Description of CellLayout fields . 137
Table E.1 – Motion Region Detector Rule configuration parameters . 139
Table E.2 – Motion region detector rule configuration options . 140
Table E.3 – Description of the motion region detector event fields . 140

– 8 – IEC 62676-2-31:2019  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VIDEO SURVEILLANCE SYSTEMS FOR
USE IN SECURITY APPLICATIONS –

Part 2-31: Live streaming and control
based on web services
FOREWORD
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International Standard IEC 62676-2-31 has been prepared by IEC technical committee 79:
Alarm and electronic security systems.
This first edition, together with IEC 60839-11-31 and IEC 62676-2-32, cancels and replaces
IEC 62676-2-3:2013.
This edition includes the following significant technical changes with respect to
IEC 62676-2-3:2013:
a) addition of the Media2 service;
b) additional methods for the imaging service;
c) method duplicates from the device IO service have been removed;
d) both the display and analytics device service are no more included.

This publication contains attached schema files. These files are intended to be used as a
complement and do not form an integral part of the standard
The text o
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