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AD
VANCED
C
ONFIGURA
TION
EN
ADVANCED CONFIGURATION
Overwrite:
When enabled, the NVR will record over the files already stored on the hard drive. The NVR will always record over
the
oldest
files on your hard drive first.
Using the overwrite option is advisable, as the NVR will always be able to record events as they happen. However, it does mean
that you’ll need to get important events off the HDD before they’re overwritten.
Pre-Record:
While Pre-Record is enabled, the NVR will record a few seconds
before
an event occurs. It’s a little like making the
NVR psychic (but not really - it’s actually just caching a few seconds of video which it adds to event recordings as they occur).
If you’re using
Motion Detection
(recommended) based recording as your primary recording method(s), then it’s a really good idea
to use Pre-Record - sometimes, if an event is fast enough, it might have left view before the NVR can trigger a recording. With
Pre-Record, there’s almost no chance you’ll miss it.
Post-Record:
How long after an event occurs that the NVR will continue to record. It can be very useful - for example, if an intruder
or potential target triggers the motion detection but pauses in view, having post-record enabled will get a much better look at
them. 30 seconds is the recommended length for the post-record setting, but it can be set higher (the options are 1, 2, 5 or 10
minutes) depending on your unique circumstances.
Pack Duration:
Pack Duration
is a measurement of how long the NVR will record for before splitting the output file into discrete
units. “Packs” are something like the chapter numbers on a DVD - though the video is broken up into separate units, it will still
play through as one continuous movie (unless interrupted by the schedule or motion detection turning the recording on or off).
If you don’t want to worry about setting Pack Durations, you can leave it on the default value; it will make little difference to the
day-to-day running of the NVR.
Recording: Option
The
Recording: Option
menu lets you change some aspects of how the NVR will record footage, such as:
• whether the NVR will record a short video
before
events take place,
• how long
after
events take place the NVR will continue to record for,
• how the NVR will store and divide long recordings into “packs” and
• whether the NVR will record over old footage to make room for new events.
