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Rate Control
The rate control setting affects the actual bit rate and quality of each frame in the video stream.
1. CBR: The constant bit rate (CBR) streams video at a fixed number of bits per second.
2. CVBR: The Constant Variable Bit Rate (CVBR) streams video at a variable number of bits per second.
Select CVBR Rate Control. CVBR Maximum Bit Rate (kbit/sec) slider will appear.
Image Rate
The image rate is the number of images per second (ips) available for the video stream configuration. Available image
rates are 60, 50, 30, 25, 20, 16.67, 15, 12.5, 10, 7.5, 5, 3, 2 and 1.
NOTE: The maximum image rate setting might not be obtainable due to the programmed compression standard and the
resolution of the stream.
GOP Length
Select the GOP length from 1 to 60 (depending on selected Image Rate value. A larger GOP length results in greater
compression of the video and lower bit rates consuming less network bandwidth. However, large GOP lengths can also
result in dropped frames. A smaller GOP length results in less compression of the video but yields higher bit rates
consuming more network bandwidth. This setting is only available in H.264 and H265.
CBR Bit Rate (kbit/sec)
Selecting constant bit rate (CBR) streams video at a fixed number of bits per second. CBR uses the full capacity of the bit
rate setting for scenes with or without motion. Video is always streamed at the user bit rate setting.
When CBR is selected as the Rate Control option the Bit Rate adjustment slider will be used to specify the fixed number of
bits per second.
CVBR Maximum Bit Rate (kbit/sec)
Selecting the constrained variable bit rate (CVBR) provides high-quality video and long recording time of variable bit rate
while limiting variations in recording capacity consumption.
When CVBR is selected as the Rate Control option the Bit Rate adjustment slider will be used to set the maximum bit rate.
QoS (DSCP) Codepoint
Quality of Service (QoS) for Differentiated Services Code Point (DSCP) is a code that allows the network to prioritize the
transmission of different types of data. This setting is only available with H264 and H265.
NOTES:
1. If you are not familiar with DSCP, contact your network administrator before changing this setting.
2. Your network must be configured to use QoS. If you are unsure if your network is QoS-aware, contact your network
administrator.
Endura Signing
Enabling the Endura Signing feature allows an Endura® system to authenticate video from an Endura recorded stream.
This setting is only available with H.264 and H265.
NOTE: Endura Signing is not supported in P2820-ERS model.
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