Record: Encoding - Swann DVR16-1500 Instruction Manual

Record: Encoding

Encoding Parameters: Each video feed of the DVR is
comprised of 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 a camera that you would like to alter.
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 alter settings for both Normal and
Event recording, 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: This DVR has a fixed resolution (D1) and cannot
be changed.
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 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 (check-box):
audio from this camera. The camera must contain a
compatible audio device for this option to be selectable.
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.
Whether the DVR will record
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