Dahua NVR52-4KS2 Series User Manual page 426

Step 2 Configure parameters.
Table 5-82 Audio and video transmission parameters
Area Parameter
Enable
Private
Encryption Type Use the default setting.
Protocol
Update Period of
Secret Key
Enable
RTSP over TLS
Select a device
certificate
Certificate
Management
Step 3 Click Apply.
Figure 5-289 Audio and video transmission
Description
Enables stream frame encryption by using private protocol.
There might be safety risk if this service is disabled.
Secret key update period.
Value range: 0–720 hours. 0 means never update the secret
key.
Default value: 12.
Enables RTSP stream encryption by using TLS.
There might be safety risk if this service is disabled.
Select a device certificate for RTSP over TLS.
For details about certificate management, see "5.14.4.1 Device
Certificate".
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