Encode - Dahua NVR21-4 KS2 Series User Manual

Parameter
BLC
WB
Day & Night
Step 3 Click Apply.

4.2.5 Encode

You can set video bit stream and image parameters.
4.2.5.1 Encode
You can set video bit stream parameters such as bit stream type, compression, resolution.
Some series products support three streams: main stream, sub stream 1, sub stream 2. The sub
stream maximally supports 1080P.
Step 1 Select Main menu > CAMERA > ENCODE > ENCODE.
The ENCODE interface is displayed. See Figure 4-55.
Description
You can set camera BLC mode.
Self-adaptive: In the backlight environment, the system can

automatically adjust image brightness to clearly display the
object.
BLC:

Default: The device auto exposures according to the
◇
environments situation so that the darkest area of the video
is cleared
Customize: After select the specified zone, the system can
◇
expose the specific zone so that the zone can reach the
proper brightness.
 WDR: In backlight environment, it can lower the high bright
section and enhance the brightness of the low bright section. So
that you can view these two sections clearly at the same time.
 HLC: In the backlight environment, it can lower the brightness of
the brightest section and reduce the area of the halo and lower
the brightness of the whole video.
 Stop: It is to disable the BLC function.
You can set camera WB mode. It can affect the image whole hue

so that the image can accurately displays the environment status.

Different cameras supports different WB modes such as auto,

manual ,natural light, outdoor and etc.
Configure the color and black&white mode of the image. This setting
is not affected by the configuration files. The default setting is Auto.
 Color: The camera outputs color image only.
Auto: Depends on the camera, such as overall brightness and

whether there is an IR light, either color image or black&white
image is output.
B/W: The camera outputs Black and white image only.

Sensor: It is to set when there is peripheral connected IR light.

The Sensor item is for some non-IR device only.
Local Basic Operation 119