NETWORK VIDEO RECORDER QUICK START GUIDE
Constant Bit Rate
Constant Bit Rate (CBR) applies a specific bit rate for the video stream and the camera will
transmit at approximately this bit rate without regard to time, light level, scene complexity, or
other factors. As a result, the image quality will appear improved, but bandwidth and storage
requirements will be the high.
Variable Bit Rate
Variable Bit Rate (VBR) automatically adjusts the bit rate according the scene being
monitored. With VBR enabled, the image quality will decrease when there is less or no motion
occurring and increase when scene complexity increases. As a result, bandwidth and
storage requirements can be considerably reduced while the image quality will be focused
on scenes of actual importance.
To configure VBR+ from the Concept Pro NVR, navigate to <MENU> - <SYSTEM SETUP> -
<CAMERA> - <CAMERA SETUP> - <STREAM SETUP>. Select the desired channel and bit rate
control scheme, then press <APPLY>.
VBR+
Some Concept Pro cameras, such as the CVP5325 series, support a special feature named
VBR+. Similar to other smart codecs, VBR+ is a more intelligent video processing feature that
can more aggressively apply techniques to dramatically reduce the bit rate by only focusing
optimal image quality according to scene complexity.
To configure VBR/CBR from the Concept Pro NVR, navigate to <MENU> - <SYSTEM SETUP> -
<CAMERA> - <CAMERA SETUP> - <STREAM SETUP>. Select the desired channel and VBR+ from
Bit Rate Control, then press <APPLY>.
Regions of Interest
Some Concept Pro cameras, such as the CVP5325 series, support regions of interest directly
through Concept Pro NVRs, others can be configured through web browser. Regions of
Interest can be manually set from the <CAMERA SETUP> menu with the area denoted ‘of
interest’ or ‘not of interest’. According to the setting, the camera will apply optimal image
quality to the area and low image quality to outside areas to help reduce bit rate further.
Auto ROI is another option that allows the camera to intelligently track moving objects and
apply optimal image quality to moving objects only while the background image quality
would be lower.
Smart Storage Compression
Concept Pro NVR products support Smart Storage Compression (SSC), a feature designed
to limit the camera bit rate according to the recording FPS value. With Smart Storage
Compression (SSC) off by default, the system will record video streams at higher bit rates, and
preserve this bit rate no matter the record FPS.
With Smart Storage Compression (SSC) set to ON, the system will reduce the maximum bit rate
to 4Mbps for the main stream and 1Mbps for the sub stream. It will also automatically adjust
the max bit rate according to the record FPS setting. SSC therefore attempts to balance
image quality with recording frame rate for additional savings in bandwidth and storage.
H.265
H.265 is a new video compression codec that allows for more optimal compression of video
streams compared to the H.264 video codec. When combined with VBR, this can result in a
considerable reduction in bit rate compared to H.264 without a major trade off in image quality.
Note: Performance of bit rate control schemes and video compression codecs depends
upon the installation environment.