Dahua NVR41-4KS2 Series User manual

Dahua Network Video Recorder
User's Manual
ZHEJIANG DAHUA VISION TECHNOLOGY CO., LTD. V1.1.0

User's Manual
I
Foreword
General
This user’s manual (hereinafter referred to be "the Manual") introduces the installation, functions and
operations of the Network Video Recorder (NVR) devices (hereinafter referred to be "the Device").
Safety Instructions
The following categorized signal words with defined meaning might appear in the manual.
Signal Words Meaning
Indicates a high potential hazard which, if not avoided, will result
in death or serious injury.
Indicates a medium or low potential hazard which, if not avoided,
could result in slight or moderate injury.
Indicates a potential risk which, if not avoided, could result in
property damage, data loss, lower performance, or unpredictable
result.
Provides methods to help you solve a problem or save you time.
Provides additional information as the emphasis and supplement
to the text.
Revision History
Version Revision Content Release Time
V1.1.0 Combined AI and non-AI models and deleted
discontinued models. May 2021
V1.0.10 Added several models. April 2021
V1.0.9 Added 6 models. February 2021
V1.0.8 Added 5 models. January 2021
V1.0.7 ●Added 2 models.
●Added . August 2020
V1.0.6
●Added "4.3.3.8 Picture Search", "4.6.4
Picture Search Playback", "4.12.7.3 Disk
Health Monitoring", "4.7.3.2
Exporting/Importing Face Database"
●Updated "4.7.1.1 Face Detection", "4.7.1.5
Human Detection", "4.7.2.3 Face
Recognition", and "4.16.1 Display"
May 2020
V1.0.5
Added "4.3.9 Split Tracking", "4.7.2.11 Main-
sub Tracking", "4.7.1.11 Analytics List",
"4.7.2.12 Video Quality Analytics", "4.12.11
Setting iSCSI" and "5.4 Cluster Service".
May 2020

User's Manual
II
Version Revision Content Release Time
V1.0.4
●Added 16 models.
●Added "4.2.8 Checking PoE Status" and
"4.11.16 Setting Switch".
●Updated "4.16.1 Display".
April 2020
V1.0.3 ●New GUI baseline, replaces all interfaces.
●Added AI functions. July 2019
V1.0.2 Updated the description of rear panel. May 2019
V1.0.1
●Added NVR 5216-16P-I and NVR5216-8P-
I. Updated relevant info.
●Updated icons on the rear panel.
●Added video metadata function and
non-motor vehicle detection function.
September 2018
Privacy Protection Notice
As the device user or data controller, you might collect personal data of others such as face,
fingerprints, car plate number, Email address, phone number, GPS and so on. You need to be in
compliance with the local privacy protection laws and regulations to protect the legitimate rights
and interests of other people by implementing measures including but not limited to: providing
clear and visible identification to inform data subject the existence of surveillance area and
providing related contact.
About the Manual
●The manual is for reference only. If there is inconsistency between the manual and the actual
product, the actual product shall prevail.
●We are not liable for any loss caused by the operations that do not comply with the manual.
●The manual would be updated according to the latest laws and regulations of related regions.
For detailed information, see the paper manual, CD-ROM, QR code or our official website. If there
is inconsistency between paper manual and the electronic version, the electronic version shall
prevail.
●All the designs and software are subject to change without prior written notice. The product
updates might cause some differences between the actual product and the manual. Please
contact the customer service for the latest program and supplementary documentation.
●There still might be deviation in technical data, functions and operations description, or errors in
print. If there is any doubt or dispute, please refer to our final explanation.
●Upgrade the reader software or try other mainstream reader software if the manual (in PDF
format) cannot be opened.
●All trademarks, registered trademarks and the company names in the manual are the properties
of their respective owners.
●Please visit our website, contact the supplier or customer service if there is any problem occurred
when using the device.
●If there is any uncertainty or controversy, please refer to our final explanation.

User's Manual
III
Important Safeguards and Warnings
The following description is the correct application method of the device. Read the manual carefully
before use to prevent danger and property loss. Strictly conform to the manual during application
and keep it properly after reading.
Operating Requirement
●Install the PoE front-end device indoors.
●The device does not support wall mount.
●Do not place and install the device in an area exposed to direct sunlight or near heat generating
device.
●Do not install the device in a humid, dusty or fuliginous area.
●Keep its horizontal installation, or install it at stable places, and prevent it from falling.
●Do not drip or splash liquids onto the device; do not put on the device anything filled with
liquids, in order to prevent liquids from flowing into the device.
●Install the device at well-ventilated places; do not block its ventilation opening.
●Use the device only within rated input and output range.
●Do not dismantle the device arbitrarily.
●Transport, use and store the device within allowed humidity and temperature range.
Power Requirement
●Use the designated battery type. Otherwise there might be explosion risk.
●Use batteries according to requirements. Otherwise, it might result in fire, explosion or burning
risks of batteries!
●When replacing batteries, use the same type of batteries.
●Dispose the exhausted batteries according to the instructions.
●Use electric wires (power wires) recommended by this area and within its rated specification.
●Use standard power adapter matched with this device. Otherwise, the user shall undertake
resulting personnel injuries or device damages.
●Use power supply that meets SELV (safety extra low voltage) requirements, and supply power
with rated voltage that conforms to Limited Power Source in IEC60950-1. For specific power
supply requirements, please refer to device labels.
●Products with category I structure shall be connected to grid power output socket, which is
equipped with protective grounding.
●Appliance coupler is a disconnecting device. During normal use, please keep an angle that
facilitates operation.

User's Manual
IV
Table of Contents
Foreword ........................................................................................................................................................................................................I
Important Safeguards and Warnings............................................................................................................................................III
1 Features.....................................................................................................................................................................................................1
1.1 Overview ........................................................................................................................................................................................1
1.2 Features..........................................................................................................................................................................................1
2 Front Panel and Rear Panel .............................................................................................................................................................4
2.1 Front Panel....................................................................................................................................................................................4
2.1.1 NVR41-4KS2/NVR41-P-4KS2/NVR41-8P-4KS2/NVR41-4KS2/L/NVR41-P-4KS2/L/NVR41-8P-
4KS2/L/NVR21-4KS2/NVR21-P-4KS2/NVR21-8P-4KS2 Series .......................................................................4
2.1.2 NVR11HS-S3H/NVR11HS-P-S3H/NVR11HS-8P-S3H/NVR41HS-4KS2/NVR41HS-P-
4KS2/NVR41HS-8P-4KS2/NVR41HS-4KS2/L/NVR41HS-P-4KS2/L/NVR41HS-8P-
4KS2/L/NVR21HS-4KS2/NVR21HS-P-4KS2/NVR21HS-8P-4KS2 Series .....................................................5
2.1.3 NVR52-4KS2/NVR52-8P-4KS2/NVR52-16P-4KS2/NVR42-4KS2/NVR42-P-4KS2/NVR42-8P-
4KS2/NVR42-16P-4KS2/NVR42-4KS2/L/NVR42-P-4KS2/L/NVR42-8P-4KS2/L/NVR42-16P-
4KS2/L/NVR5224-24P-4KS2/NVR54-4KS2/NVR54-16P-4KS2/NVR44-4KS2/NVR44-16P-
4KS2/NVR44-4KS2/L/NVR44-16P-4KS2/L/NVR5424-24P-4KS2/NVR58-4KS2/NVR58-16P-
4KS2/NVR48-4KS2/NVR48-16P-4KS2/NVR48-4KS2/L/NVR48-16P-4KS2/L/NVR22-4KS2/NVR22-
P-4KS2/NVR22-8P-4KS2/NVR52-8P-4KS2E/NVR52-16P-4KS2E/NVR54-16P-4KS2E/NVR58-16P-
4KS2E Series...........................................................................................................................................................................6
2.1.4 NVR21-W-4KS2 Series...................................................................................................................................................7
2.1.5 NVR21HS-W-4KS2 Series.............................................................................................................................................8
2.1.6 NVR21-I/NVR21-I2/NVR21-P-I/NVR21-P-I2/NVR21-8P-I/NVR21-8P-I2 Series...................................9
2.1.7 NVR22-I/NVR22-I2/NVR22-P-I/NVR22-P-I2/NVR22-8P-I/NVR22-8P-I2/NVR22-16P-I/NVR22-
16P-I2 Series.........................................................................................................................................................................10
2.1.8 NVR21HS-I/NVR21HS-I2/NVR21HS-P-I/NVR21HS-P-I2/NVR21HS-8P-I/NVR21HS-8P-I2 Series
....................................................................................................................................................................................................11
2.1.9 NVR48-I/NVR58-I/NVR58-I/L Series .....................................................................................................................12
2.1.10 NVR42-I/NVR44-I/NVR54-I/NVR54-I/L/NVR52-I/NVR52-I/L Series.....................................................12
2.1.11 NVR608-4KS2 Series.................................................................................................................................................13
2.1.12 NVR616-4KS2 Series.................................................................................................................................................14
2.2 Rear Panel....................................................................................................................................................................................16
2.2.1 NVR21-4KS2/NVR21-P-4KS2/NVR21-8P-4KS2 Series .................................................................................16
2.2.2 NVR11HS-S3H/NVR11HS-P-S3H/NVR11HS-8P-S3H/NVR21HS-4KS2/NVR21HS-P-
4KS2/NVR21HS-8P-4KS2/NVR41HS-4KS2/NVR41HS-P-4KS2/NVR41HS-8P-4KS2/NVR41HS-
4KS2/L/NVR41HS-P-4KS2/L/NVR41HS-8P-4KS2/L Series..............................................................................17
2.2.3 NVR22-4KS2/NVR22-P-4KS2/NVR22-8P-4KS2 Series .................................................................................19
2.2.4 NVR52-4KS2/NVR52-8P-4KS2/NVR52-16P-4KS2/NVR52-24P-4KS2/NVR52-8P-4KS2E/NVR52-
16P-4KS2E Series...............................................................................................................................................................20
2.2.5 NVR54-4KS2/NVR58-4KS2/NVR54-16P-4KS2/NVR58-16P-4KS2/NVR54-24P-4KS2/NVR58-

User's Manual
V
16P-4KS2E Series...............................................................................................................................................................22
2.2.6 NVR41-4KS2/NVR41-P-4KS2/NVR41-8P-4KS2/NVR41-4KS2/L/NVR41-P-4KS2/L/NVR41-8P-
4KS2/L .....................................................................................................................................................................................25
2.2.7 NVR42-4KS2/NVR42-P-4KS2/NVR42-8P-4KS2/NVR42-16P-4KS2/NVR42-4KS2/L/NVR42-P-
4KS2/L/NVR42-8P-4KS2/L/NVR42-16P-4KS2/L Series ....................................................................................26
2.2.8 NVR44-4KS2/NVR44-16P-4KS2/NVR44-4KS2/L/NVR44-16P-4KS2/L Series....................................28
2.2.9 NVR48-4KS2/NVR48-16P-4KS2/NVR48-4KS2/L/NVR48-16P-4KS2/L Series....................................30
2.2.10 NVR21-W-4KS2 Series..............................................................................................................................................32
2.2.11 NVR21HS-W-4KS2Series.........................................................................................................................................34
2.2.12 NVR21-I/NVR21-I2 Series .......................................................................................................................................35
2.2.13 NVR22-I/NVR22-I2 Series .......................................................................................................................................35
2.2.14 NVR21-P-I/NVR21-P-I2 Series...............................................................................................................................36
2.2.15 NVR22-P-I/NVR22-P-I2 Series...............................................................................................................................37
2.2.16 NVR21-8P-I/NVR21-8P-I2 Series .........................................................................................................................38
2.2.17 NVR22-8P-I/NVR22-8P-I2 Series .........................................................................................................................39
2.2.18 NVR22-16P-I/NVR22-8P-I2 Series.......................................................................................................................40
2.2.19 NVR21HS-I/NVR21HS-I2 Series ...........................................................................................................................42
2.2.20 NVR21HS-P-I/NVR21HS-P-I2 Series...................................................................................................................43
2.2.21 NVR21HS-8P-I/NVR21HS-8P-I2 Series .............................................................................................................44
2.2.22 NVR4208-8P-I Series.................................................................................................................................................45
2.2.23 NVR4216-I Series........................................................................................................................................................46
2.2.24 NVR58-I/NVR58-I/L/NVR48-I Series...................................................................................................................48
2.2.25 NVR54-I/NVR54-I/L/NVR44-I Series...................................................................................................................50
2.2.26 NVR52-16P-I/NVR52-16P-I/L/NVR52-8P-I/NVR52-8P-I/L/NVR42-16P-I Series.............................51
2.2.27 NVR608-4KS2 Series.................................................................................................................................................
54
2.2.28 NVR616-4KS2 Series.................................................................................................................................................55
2.3 Alarm Connection....................................................................................................................................................................56
2.3.1 Alarm Port ........................................................................................................................................................................56
2.3.2 Alarm Input Port............................................................................................................................................................57
2.3.3 Alarm Output Port........................................................................................................................................................59
2.3.4 Alarm Relay Specifications.......................................................................................................................................59
2.4 Two-way Talk.............................................................................................................................................................................60
2.4.1 Device-end to PC-end .................................................................................................................................................60
2.4.2 PC-end to the Device-end.........................................................................................................................................60
2.5 Mouse Operation .....................................................................................................................................................................61
2.6 Remote Control.........................................................................................................................................................................62
3 Device Installation .............................................................................................................................................................................65
3.1 Device Installation Diagrams.............................................................................................................................................65

User's Manual
VI
3.2 Check Unpacked NVR ............................................................................................................................................................66
3.3 About Front Panel and Rear Panel ..................................................................................................................................66
3.4 HDD Installation.......................................................................................................................................................................67
3.4.1 NVR41-4KS2/NVR41-P-4KS2/NVR41-8P-4KS2/NVR41-4KS2/L/NVR41-P-4KS2/L/NVR41-8P-
4KS2/L/NVR21-4KS2/NVR21-P-4KS2/NVR21-8P-4KS2/NVR21-W-4KS2/NVR21-I/NVR21-
I2/NVR21-P-I/NVR21-P-I2/NVR21-8P-I/NVR21-8P-I2.......................................................................................67
3.4.2 NVR41HS-4KS2/NVR41HS-P-4KS2/NVR41HS-8P-4KS2/NVR41HS-4KS2/L/NVR41HS-P-
4KS2/L/NVR41HS-8P-4KS2/L/NVR21HS-4KS2/NVR21HS-P-4KS2/NVR21HS-8P-4KS2/NVR21HS-
W-4KS2/NVR11HS-S3H/NVR11HS-P-S3H/NVR11HS-8P-S3H/NVR21HS-I/NVR21HS-
I2/NVR21HS-P-I/NVR21HS-P-I2/NVR21HS-8P-I/NVR21HS-8P-I2 Series.................................................69
3.4.3 NVR52-4KS2/NVR52-8P-4KS2/NVR52-16P-4KS2/NVR22-8P-S2/NVR42-4KS2/NVR42-P-
4KS2/NVR42-8P-4KS2/NVR42-16P-4KS2/NVR42-4KS2/L/NVR42-P-4KS2/L/NVR42-8P-
4KS2/L/NVR42-16P-4KS2/L/NVR52-24P-4KS2/NVR22-4KS2/NVR22-P-4KS2/NVR22-8P-
4KS2/NVR52-8P-4KS2E/NVR22-I/NVR22-I2/NVR22-P-I/NVR22-P-I2/NVR22-8P-I/NVR22-8P-
I2/NVR22-16P-I/NVR22-16P-I2/NVR42-I/NVR42-8P-I/NVR42-16P-I/NVR52-16P-I/NVR52-16P-
I/L/NVR52-8P-I/NVR52-8P-I/L Series ........................................................................................................................71
3.4.4 NVR54-4KS2/NVR54-16P-4KS2/NVR44-4KS2/NVR44-16P-4KS2/NVR44-4KS2/L/NVR44-16P-
4KS2/L/NVR54-24P-4KS2/NVR54-16P-4KS2E/NVR58-I/NVR58-I/L/NVR54-I/NVR54-I/L/NVR52-
I/NVR52-I/L/NVR42-I/NVR42-8P-I/NVR44-I/NVR48-I/NVR608-4KS2 Series..........................................74
3.4.5 NVR616-4KS2 Series....................................................................................................................................................79
3.5 CD-ROM Installation...............................................................................................................................................................81
3.6 Connection Sample.................................................................................................................................................................86
3.6.1 NVR41-4KS2/NVR41-P-4KS2/NVR41-8P-4KS2/NVR41-4KS2/L/NVR41-P-4KS2/L/NVR41-8P-
4KS2/L/NVR21-4KS2/NVR21-P-4KS2/NVR21-8P-4KS2/NVR21-I/NVR21-I2/NVR21-P-I/NVR21-P-
I2/NVR21-8P-I/NVR21-8P-I2 Series...........................................................................................................................86
3.6.2 NVR21-W-4KS2/NVR21HS-W-4KS2 Series........................................................................................................87
3.6.3 NVR11HS-S3H/NVR11HS-P-S3H/NVR11HS-8P-S3H/NVR41HS-4KS2/NVR41HS-P-
4KS2/NVR41HS-8P-4KS2/NVR41HS-4KS2/L/NVR41HS-P-4KS2/L/NVR41HS-8P-
4KS2/L/NVR21HS-4KS2/NVR21HS-P-4KS2/NVR21HS-8P-4KS2/NVR21HS-I/NVR21HS-
I2/NVR21HS-P-I/NVR21HS-P-I2/NVR21HS-8P-I/NVR21HS-8P-I2 Series.................................................88
3.6.4 NVR22-4KS2/NVR22-P-4KS2/NVR22-8P-4KS2/NVR22-I/NVR22-I2/NVR22-P-I/NVR22-P-
I2/NVR22-8P-I/NVR22-8P-I2/NVR22-16P-I/NVR22-16P-I2 Series ..............................................................89
3.6.5 NVR52-4KS2/NVR52-8P-4KS2/NVR52-16P-4KS2/NVR52-24P-4KS2/NVR52-8P-4KS2E/NVR52-
16P-4KS2E Series...............................................................................................................................................................90
3.6.6 NVR42-4KS2/NVR42-P-4KS2/NVR42-8P-4KS2/NVR42-16P-4KS2/NVR42-4KS2/L/NVR42-P-
4KS2/L/NVR42-8P-4KS2/L/NVR42-16P-4KS2/L Series ....................................................................................91
3.6.7 NVR54-4KS2/NVR54-16P-4KS2/NVR58-4KS2/NVR58-16P-4KS2/NVR54-24P-4KS2/NVR54-
16P-4KS2E/NVR58-16P-4KS2E Series......................................................................................................................92
3.6.8 NVR44-4KS2/NVR44-16P-4KS2/NVR44-4KS2/L/NVR44-16P-4KS2/L Series....................................93
3.6.9 NVR48-4KS2/NVR48-16P-4KS2/NVR48-4KS2/L/NVR48-16P-4KS2/L Series....................................94
3.6.10 NVR58-I/NVR58-I/L/NVR48-I Series...................................................................................................................95
3.6.11 NVR54-I/NVR54-I/L/NVR44-I.................................................................................................................................96
3.6.12 NVR52-16P-I/NVR52-16P-I/L/NVR52-8P-I/NVR52-8P-I/L/NVR42-8P-I/NVR42-16P-I Series ..96
3.6.13 NVR4216-I Series ........................................................................................................................................................97

User's Manual
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3.6.14 NVR608-4KS2 Series.................................................................................................................................................97
3.6.15 NVR616-4KS2 Series.................................................................................................................................................98
4 Local Basic Operation.......................................................................................................................................................................99
4.1 Getting Started .........................................................................................................................................................................99
4.1.1 Booting up........................................................................................................................................................................99
4.1.2 Device Initialization.....................................................................................................................................................99
4.1.3 Resetting Password ..................................................................................................................................................102
4.1.3.1 Enabling Password Reset Function........................................................................................................102
4.1.3.2 Resetting Password on Local Interface................................................................................................ 103
4.1.3.3 Reset Button ......................................................................................................................................................108
4.1.4 Quick Settings .............................................................................................................................................................109
4.1.4.1 General.................................................................................................................................................................110
4.1.4.1.1 General......................................................................................................................................................110
4.1.4.1.2 Date and Time........................................................................................................................................112
4.1.4.1.3 Holiday ......................................................................................................................................................113
4.1.4.2 Basic Networking Settings .........................................................................................................................115
4.1.4.3 P2P..........................................................................................................................................................................119
4.1.4.3.1 Local Operation ....................................................................................................................................119
4.1.4.3.2 Client Operation ...................................................................................................................................120
4.1.4.4 Adding Camera ................................................................................................................................................122
4.1.4.5 RAID Manager...................................................................................................................................................127
4.1.4.6 Schedule..............................................................................................................................................................129
4.1.4.6.1 Recording Schedule............................................................................................................................129
4.1.4.6.2 Snapshot Schedule..............................................................................................................................135
4.1.4.6.3 Record Control ......................................................................................................................................136
4.2 Camera .......................................................................................................................................................................................138
4.2.1 Connection....................................................................................................................................................................138
4.2.1.1 Changing IP Address of Connected Remote Device......................................................................138
4.2.1.2 Auto Changing H.265....................................................................................................................................138
4.2.1.3 IP Export ..............................................................................................................................................................139
4.2.1.4 IP Import..............................................................................................................................................................140
4.2.2 Remote Device Initialization................................................................................................................................141
4.2.3 Shortcut Menu to Add Camera............................................................................................................................146
4.2.4 Image ...............................................................................................................................................................................147
4.2.5 Video Overlay ..............................................................................................................................................................150
4.2.5.1 Overlay.................................................................................................................................................................150
4.2.5.2 Privacy Masking...............................................................................................................................................150

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4.2.6 Encode.............................................................................................................................................................................151
4.2.6.1 Encode..................................................................................................................................................................152
4.2.6.2 Snapshot .............................................................................................................................................................154
4.2.7 Channel Name .............................................................................................................................................................156
4.2.8 Checking PoE Status.................................................................................................................................................156
4.2.9 Remote Update...........................................................................................................................................................157
4.2.10 Remote Device Info................................................................................................................................................158
4.2.10.1 Device Status..................................................................................................................................................158
4.2.10.2 Firmware...........................................................................................................................................................159
4.3 Live View ...................................................................................................................................................................................160
4.3.1 Live View ........................................................................................................................................................................160
4.3.2 Navigation bar ............................................................................................................................................................161
4.3.2.1 Channel Info ......................................................................................................................................................162
4.3.2.2 USB Management ...........................................................................................................................................163
4.3.3 Live View Control Interface ..................................................................................................................................164
4.3.3.1 Instant Replay...................................................................................................................................................165
4.3.3.2 Digital Zoom......................................................................................................................................................167
4.3.3.3 Instant Backup .................................................................................................................................................168
4.3.3.4 Manual Snapshot............................................................................................................................................168
4.3.3.5 Two-way Talk ....................................................................................................................................................168
4.3.3.6 Switch Bit Streams..........................................................................................................................................168
4.3.3.7 Shortcut Menu..................................................................................................................................................169
4.3.3.8 Picture Search...................................................................................................................................................172
4.3.4 Wireless Paring ...........................................................................................................................................................174
4.3.5 Sequence........................................................................................................................................................................174
4.3.6 Fisheye (Optional) .....................................................................................................................................................177
4.3.6.1 Fisheye De-warp on Live View Interface ............................................................................................. 177
4.3.6.2 Fisheye De-warp During Playback .........................................................................................................180
4.3.7 Test Temperature ......................................................................................................................................................180
4.3.8 AI Live View Mode .....................................................................................................................................................181
4.3.9 Split Tracking...............................................................................................................................................................184
4.3.10 Quick Operation Bar ..............................................................................................................................................186
4.4 PTZ ...............................................................................................................................................................................................188
4.4.1 PTZ Settings..................................................................................................................................................................189
4.4.2 PTZ Control ...................................................................................................................................................................191
4.4.3 Configuring PTZ Functions ...................................................................................................................................193
4.4.3.1 Configuring Presets.......................................................................................................................................193

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4.4.3.2 Configuring Tours...........................................................................................................................................193
4.4.3.3 Configuring Patterns ....................................................................................................................................194
4.4.3.4 Configuring AutoScan..................................................................................................................................195
4.4.4 Calling PTZ Functions..............................................................................................................................................196
4.4.4.1 Calling Presets..................................................................................................................................................196
4.4.4.2 Calling Tours .....................................................................................................................................................196
4.4.4.3 Calling Patterns ...............................................................................................................................................197
4.4.4.4 Calling AutoScan.............................................................................................................................................197
4.4.4.5 Calling AutoPan...............................................................................................................................................197
4.4.4.6 Using Auxiliary Button .................................................................................................................................197
4.5 Record File................................................................................................................................................................................198
4.6 Playback and Search ...........................................................................................................................................................198
4.6.1 Instant Playback.........................................................................................................................................................198
4.6.2 Search Interface..........................................................................................................................................................198
4.6.2.1 Playback Control.............................................................................................................................................201
4.6.2.2 Search Type........................................................................................................................................................203
4.6.2.3 Clip .........................................................................................................................................................................203
4.6.2.4 Record Backup..................................................................................................................................................204
4.6.3 Smart Search Playback............................................................................................................................................204
4.6.4 Picture Search Playback .........................................................................................................................................205
4.6.5 Tag Playback ................................................................................................................................................................206
4.6.6 Playback Image...........................................................................................................................................................208
4.6.7 Subperiod Playback..................................................................................................................................................208
4.6.8 File List ............................................................................................................................................................................209
4.6.9 Other Aux Functions ................................................................................................................................................210
4.6.9.1 Digital Zoom......................................................................................................................................................210
4.6.9.2 Switch Channel ................................................................................................................................................210
4.7 AI ...................................................................................................................................................................................................210
4.7.1 AI Search.........................................................................................................................................................................210
4.7.1.1 Face Detection..................................................................................................................................................211
4.7.1.2 Face Recognition.............................................................................................................................................213
4.7.1.2.1 Searching by Attributes....................................................................................................................213
4.7.1.2.2 Search by Image ...................................................................................................................................215
4.7.1.3 IVS...........................................................................................................................................................................217
4.7.1.4 Stereo Analysis.................................................................................................................................................218
4.7.1.4.1 People Approach Detection ...........................................................................................................218
4.7.1.4.2 Fall Detection.........................................................................................................................................219