SerVision
Embedded Video Gateway System Guide
Configuring Camera Settings
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To solve these two problems, VMD event detection can be configured to control the length of events using the
following parameters:
Debounce:
The interval between the end of motion as detected by the unit and the time when the event is
defined as ending
Maximum length:
The maximum length of a single event
Separate events are defined when motion is not detected for a specified debounce interval. For example, if the
interval is 15 seconds, event A ends when motion is not detected for 15 seconds, and event B begins if motion is
detected again after more than 15 seconds have elapsed. If less than 15 seconds pass at the end of event A before
additional motion is detected, event A is extended to include the additional motion.
Separate events are also defined when the maximum event length is reached. For example, if the maximum length
of an event is 30 minutes, new events are generated every 30 minutes even if motion was detected without
interruption during the entire period.
Consider, for example, a camera that is set up in a train station. During peak hours, there is usually constant motion.
During off hours, lengthy intervals between motion events are common. The debounce interval is 30 seconds, and
the maximum event length is 1800 seconds (30 minutes). During peak hours, event-triggered recording generates
continuous recording because VMD events are constantly detected. However, the video is divided into 30-minute
events, making it easy to check the video to see what happened during a particular time range. During off-peak
hours, events are typically much shorter, and recording is not continuous.
About Responses to VMD Events
You can configure the unit to respond to VMD events in any or all of the following ways:
Upload video of the event to an AVV server on the internet (see
Automatically Uploading Video to an AVV
, page 67). If e-mail notification recipients are defined in the
SMS and E-mail
screen, an e-mail
message is sent to all the recipients when the VMD event begins and a second e-mail is sent when the video is
successfully uploaded and is available for downloading by users. The e-mail notification includes a link to the
video file on the server and a picture of the event. (Note that the file transfer starts at the end of the VMD
event to ensure that it encompasses the entirety of the event.)
Upload snapshots of the event to an FTP server on the internet (see
Send VMD event notifications to the SMS and/or e-mail recipients defined for the system (see
, page 61). E-mail notifications can optionally include a picture of the event, and, if AVV is
activated, a link to video of the event.
Turn an activator on or off.
Move any PTZ camera connected to the Video Gateway that supports presets to a preset location.
These actions can be implemented when the event begins, when it ends, or both.
Configuring VMD Settings
This section explains how to configure VMD settings for a camera.
To configure video motion detection (VMD):
1. In the
Camera
configuration screen, under
Motion Detection (VMD)
, select
Enabled
. The fields required to
configure the VMD settings are added to the screen:
