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NETAVIS Observer 4.4 User Manual
5.
From the Detection field pop-up menu choose the motion detection field definition you want to
use for this motion detection. If you do not yet have a detection field defined or want to change
an existing definition, then you can push the Manage detection fields button to jump to the
Detection fields view in Administration. Please refer to 8.1.2 Basic configuration of server-based
motion detection on page 64 for details on how to setup detection fields.
Continuing here, we assume you have a correctly set up detection field definition.
6.
To start the server-based motion detection Push the Start button
.
You can see the progress of the motion detection at the progress bar. You can always stop a
running motion detection by pushing the Stop button
.
Caution: Since the motion detection actually runs on the Observer server and can potentially
use up a lot of CPU resources, please be careful selecting the detection fields and also the time
period. Especially if you have selected a long time period in the Calendar the motion detection
can take a lot of time. As mentioned above, you can always stop a running archive motion
detection.
7.
While the motion detection is running, the detected motions are displayed in the hit list sorted by
the time in which the motion occurred. In our example, we have 2 hits:
8.
You can replay the events by just selecting the event with the mouse. The playback time before
and after the event can be defined by the Pre/Post event (sec) fields. You can change the
values according to your needs. Please note that there must be archived pre- and post-event
recordings available in order to be replayed.
9.
You can step through the events by pushing the Previous
and Next
buttons.
7.5 External archive management (NEA)
7.5.1 Introduction to external archives (NEA)
Starting with release 4.4 Observer offers external archives (NEA) for portable archive recordings.
Simply connect an external storage device via eSATA to the server, then Observer can save video
streams on the external storage in addition to the main archive storage. Thus it executes a second
(mirrored or double) recording: recording on the external NEA device in addition to standard recording.
The external archive can then be carried and connected to another Observer server for replay and
analysis.
NEA also offers a swap function that allows the easy exchange of external storage devices during
active recording without additional user interaction; therefore no particular operator expertise is
needed for the exchange.
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