APPENDIX A
VMD Settings and Motion-based Recording Configuration
218 MAXPRO NVR 3.1 Operator’s Guide
A
Note
• A combination of continuous and event-based recording from a camera can
be achieved using the relationship between Frames Per Second (FPS) and
Group Of Pictures (GOP).
• FPS is a measure of the images every second from the camera, while GOP
determines how frames are sequenced.
• Every GOP starts with an I-frame (full image) and is followed by smaller
images which are relative to the images preceding it. So, for a GOP of 5 there
will be one I-frame for every 5 frames.
The following figure shows an example of three seconds of video at 5 FPS and 5 GOP.
Figure a-2 I-frame Example
The NVR record Quality Settings for Continuous (background) and Event recording can be
used to achieve different level of FPS by selecting one of the following options.
• Same as Live: Every frame is recorded (5 FPS in the example)
• Every I-frame: Every I-frame is recorded (1 FPS in the example)
• Every Second Iframe: Every second I-frame is recorded (1 frame every 2 seconds in the
example)
• Every Third Iframe: Every third I-frame is recorded (1 frame every 3 seconds in the
example)
Note: For more detailed information on the relationship between FPS and GOP and
example settings to achieve different frame rates, refer to the MAXPRO NVR
Operators Guide.
Configuring the Pre and Post Event Recording
Settings
Note: See Event Recording Settings section for more information on configuring the
pre and post event recording settings.
Configuring Camera Settings for VMD-Based
Recording
To configure camera settings for VMD-based recording
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