Manage pre-buffering

Enable and disable pre-buffering:

Pre-buffering is enabled by default with a pre-buffer size of three seconds and storage to the memory.

To enable/disable pre-buffering, select/clear the Pre-buffer check box.

Specify storage location and pre-buffer period:

Temporary pre-buffer recordings are stored either in the memory or on the disk:

For Location, select Memory or Disk and specify the number of seconds.
The number of seconds you specify must be sufficiently large to accommodate your requirements in the various recording rules you define.

If you require a pre-buffer period of more than 15 seconds, select Disk.
If you change the location to Memory, the system reduced the period to 15 seconds automatically.

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.

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.