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ADVANCED CONFIGURATION
EN
Record: Encoding
Encoding Parameters: Each video feed of the DVR contains
two components, the Main Stream and the SubStream.
Both the Main Stream and the SubStream are always active
- you don't have to choose one for the DVR to use as it's
always using both. You can, however, change the quality,
size and types of compression used for either.
Camera: Select the camera that you want to configure.
Main Stream: The images you'll see in the Live View
interface of the DVR. This is the higher quality of the two
streams, and is what you'll see on the DVR itself or via a
local network. You can change settings for both Normal and
Event recordings, and it is recommended to select the same
settings for both recording types.
Stream Type: What kind of data you want the stream to
contain. The cameras included with the DVR stream video
only.
Resolution: Set recording at resolution of WD1, 4CIF, 2CIF,
CIF or QCIF. The higher the resolution, the more potential
detail there will be in your images. The higher your
resolution, the higher the bitrate will need to be to maintain
a level of detail per-pixel.
Frame Rate: The number of frames per second (fps) that
the DVR will record. The default (and maximum) is referred
to as "Full Frame" and is 30fps (NTSC) or 25fps (PAL).
Video Quality: The actual amount of data the DVR will use
to record video. You have the choice of low, medium and
high quality.
Pre-record: While Pre-record is enabled, the DVR will record
between X and Y seconds before an event occurs. It's a little
like making the DVR psychic (but not really - it's actually
40
just caching a few seconds of video which it adds to event
recordings as they occur).
If you're using Motion Detection (recommended) as your
primary recording method, 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 DVR 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 DVR
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 5 seconds, 10 seconds,
30 seconds, 60 seconds, 120 seconds, 300 seconds, 600
seconds) depending on your unique circumstances.
Expired Time (day): Determines how long the video
footage will remain on the hard drive without it being
overwritten. The default value 0, instructs the DVR to auto
overwrite.
Record Audio (checkbox): Whether the DVR will record
audio from this camera. The camera must contain a
compatible audio device for this option to be selectable.
Enable 960Mode (checkbox): Allow encoding at WD1
(PAL: 960 x 576, NTSC: 960 x 480) resolution.
Substream: A fraction of the Main Stream, and what you'll
see over the Internet or via a mobile device. Typically, the
Substream will be of significantly lower quality and bitrate
than the main stream.
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