Milestone XProtect Advanced VMS 2014 - Manual (Page 103)

Milestone XProtect ® Advanced
VMS 2014
Administrator's Manual
www.milestonesys.com 103 Management Client elements
To use the pre-buffer function, the devices must be enabled and sending a stream to the system.
Devices that support pre-buffering
Cameras, microphones and speakers support pre-buffering. For speakers, the streams are only sent
when an XProtect Smart Client user uses the Talk to speaker function. This means that depending on
how your speaker streams are triggered to be recorded there is little or no pre-buffering available.
In most cases you set up speakers to record when the XProtect Smart Client user uses the Talk to
speaker function. In such cases, no speaker pre-buffer is available.
Manage pre-buffering
Enable and disable pre-buffering:
Pre-buffering is enabled by default with a pre-buffer size of three seconds.
1. To enable/disable pre-buffering, select/clear the Pre-buffer (in seconds) check box.
2. When you enable it, specify a pre-buffer size. The number of seconds you specify must be
sufficiently large to accommodate your requirements in the various recording rules you define.
Use pre-buffer in rules:
When you create rules that trigger recording, you can select that recordings should start some time
before the actual event (pre-buffer).
Example: The below rule specifies that recording should start on the camera 5 seconds before
motion is detected on the camera.
Detail from a rule relying on pre-buffering
To use the pre-buffer recording function in the rule, you must enable pre-buffering on the device being
recorded and you must set the pre-buffer length to at least the same length as specified in the rule.
Manage manual recording
Stop manual recording after is enabled by default with a recording time of five minutes. This is to
ensure that the system automatically stops all recordings started by the XProtect Smart Client users.
1. To enable and disable manual recording to be stopped automatically by the system,
select/clear the Stop manual recording after check box.
2. When you enable it, specify a recording time. The number of minutes you specify must be
sufficiently large to accommodate the requirements of the various manual recordings without
overloading the system.