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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 the extra stream video. This item is
enabled by default.
Code stream
type
This includes main stream, motion stream, and alarm stream.
You can select different encode frame rates for different events.
The 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 motion detection record and
alarm record.
Compression
The main bit stream supports H.264. The extra stream supports
H.264 and MJPG.
Resolution
The resolution here refers to the capability of the network
camera.
Frame Rate
PAL: 1~25fps; NTSC: 1~30fps.
Bit Rate
Main stream: You can set the bit rate here to change the
video quality. The large the bit rate is, the better the quality
is. Please refer to recommend bit rate for detailed
information.
Extra stream: In CBR, the bit rate here is the max value. In
dynamic video mode, the system needs to lower the 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.
I Frame
Here you can set the P frame amount between two I frames. The
value ranges from 1 to 150. The default value is 50.
Recommended value is frame rate *2.
Summary of Contents for NV21 Series
Page 1: ...Network Video Recorder User Manual Version 1 0 4 Revised November 21st 2018 ...
Page 201: ...201 Figure 5 39 5 9 2 7 Email The email interface is shown as in Figure 5 40 ...
Page 214: ...214 Figure 5 58 ...
Page 227: ...227 Figure 5 77 Figure 5 78 ...
Page 245: ...245 Figure 5 102 5 10 2 Log Here you can view system log See Figure 5 103 Figure 5 103 ...