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Setup -
Video Setup
6
Bitrate Mode
Select the bit rate control scheme of video compression
from CBR (Constant Bit Rate) or VBR (Variable Bit Rate).
CBR
To guarantee the designated constant bit rate, the quality of video
are controlled in this mode. Therefore, the quality of video is likely
to be varying when network traffic is changing.
VBR
To guarantee the designated quality, the bit rate of video stream
is changed in this mode. Therefore, the frame rate of video is likely
to be varying when network traffic is changing
This category won't be appear if you select the codec.
7
Target Bitrate
If Bitrate Control is set to be CBR, you can set the Target
Bitrate.
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Quality
For VBR control mode, The Target Quality of video can be
setup.
8
GOP(Group of Pictures) Size
Set up the number of frames (P-frame) which contain only
changed information based on basic frame (I-frame).
Regarding videos with lots of movement, if you set GOP size
bigger, only the number of P-frames is bigger. As a result,
video resolution will be low but 'File size' and 'Bit-rate can
be decreased.
GOP(Group of Pictures) Size is..
I-frame and P-frame can be created for MPEG4 and H.264
video compression. I-frame(=key-frame) means the whole
image data for one specific scene of video. P-frame is image
data which has been changed information compared to
I-frame GOP is made up of one I-frame and corresponding
several P-frames. To improve video quality, set the number
of P-frames smaller and to decrease image size, set the
number of P-frames bigger.
9
Video Output(Optional Function)
To check the display output status during the installation,
'On' status is required.
Recommend 'Off' status after installation.
10
Click 'Apply' to make above setting effective.
Click this button when completed setup each channels.
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