User guide

DETEXI NVR 71 - 169
9 Learning the DETEXI NVR motion detection and event management system should
allow a better understanding of how to configure system settings including
recording rules.
9 All NVR services are visible and configurable in the NVR Control Center —
Monitor.
3. Start or Synchronize Recording Services
There are two NVR services that should be running and monitored by the Monitor service in order to
record — Recorder and Check Drive.
• Recorder service records information and images from each video input into the NVR archive,
according to the configured schedules, preferences, alarms and events.
• Check Drive service monitors the condition of the storage path and device to confirm existence
and available space for new video being recorded to the archive.
The DETEXI NVR recording services support runtime configurations. This means that changes in the
cameras recording settings can be made without stopping the NVR services. When you are ready for
your recording settings to take effect, start the Recorder and Check Drive services from the NVR Control
Center — Monitor or if the services were running and monitored during the configuration just click the
Synchronize button to activate the new configurations.
9 The Synchronize button is found in the upper right corner of any NVR Control Center page.
4. Check Alarm Service
If Recording on Input Alarm method is setup in a camera/video server schedule, the Check Alarm
service responsible for watching the status of IP device inputs should also be running and monitored.
• Check Alarm service monitors the hard inputs of connected video devices, and raises alarms
when defined changes are seen on such inputs.
Video Motion Detection
Video motion detection (VMD) is the original, most basic and prevalent
intelligent video analysis in video surveillance. Video motion detection is a key
function in the DETEXI NVR. It is a way of defining activity in a scene by
analyzing image data and differences in a series of images.
• Using the NVR motion detection functionality alleviates the workload
for any recording devices in the system. It also reduces the use of
bandwidth, in addition to storage space, and makes event-driven
surveillance possible because no video (or only low-frame-rate video)
is sent to the operator or recording system unless activity is detected in
a scene.
• The NVR provides the video motion detection functionality even to the
network cameras that do not have this as a built-in feature. This means
that a network camera will send video to the NVR software for analysis.
Motion can be detected in any area of an image. In addition, users may
be able to set different motion detection sensitivities.