122
below. See Figure 5-21.
Figure 5-21
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 sub 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 and the extra stream supports H.264,
MJPG.
Resolution
System supports various resolutions, you can select from the
dropdown list. The higher the resolution is, the better the video
quality is. The first channel and then second channel maximally
support 1080P. The third and the fourth channel maximally
support 720P.
Frame Rate
PAL
:
1
~
25f/s
;
NTSC
:
1
~
30f/s.
Bit Rate
Main stream: You can set bit rate here to change video
quality. The large the bit rate is, the better the quality is.
Please refer to recommend bit rate for the detailed
information.
Extra stream: In CBR, the bit rate here is the max value.
In dynamic video, system needs to low frame rate or
video quality to guarantee the value. The value is null in
VBR mode.
Reference bit
rate
Recommended bit rate value according to the resolution and
frame rate you have set.
Audio enable
System supports G711a/PCM/G71
1μ. The options may vary