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 .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
30
