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attractive if the value is too low. The recommended value ranges
from 40 to 60.
Gain
The gain adjust is to set the gain value. The smaller the value is,
the low the noise is. But the brightness is also too low in the dark
environments. It can enhance the video brightness if the value is
high. But the video noise may become too clear.
White level
It is to enhance video effect.
Color mode
It includes several modes such as standard, color. You can
select corresponding color mode here, you can see hue,
brightness, and contrast and etc will adjust accordingly.
5.9.1.2 Video and Audio
5.9.1.2.1 Encode
The encode interface is shown as below. See Figure 5-18.
Figure 5-18
Please refer to the following sheet for detailed information.
Parameter
Function
Channel
Please select a channel from the dropdown list.
Video enable
Check the box here to enable extra stream video. This item is
enabled by default.
Code stream
type
It includes main stream, motion stream and alarm stream. You
can select different encode frame rates form different recorded
events.
System supports active control frame function (ACF). It allows
you to record in different frame rates.
For example, you can use high frame rate to record important
events, record scheduled event in lower frame rate and it allows
you to set different frame rates for alarm record.
Compression
The main bit stream supports H.264. The extra stream supports
H.264, MJPG.
