SURVEILLANCE SYSTEM
12
FOUR CHANNEL DIGITAL VIDEO RECORDER SC148
17 SYSTEM > ENCODE CONFIG
Encode config allows configuration of the video stream
encoding and recording quality. The DVR allows two different
channels of compression.
› MAIN STREAM is for the video streams that are displayed
and recorded by the DVR. Main stream has the best quality
for local viewing.
› SUB STREAM is for the video streams transmitted through
the network to mobile devices or a remote PC. The sub
stream usually has lower quality to keep the files small,
making it easier to transmit through the network and
ensuring a smooth video stream.
› CHANNEL: The video channel that is being configured. This
number corresponds to the BNC video input on the rear
panel of the DVR.
› RESOLUTION: The number of pixels in the video. There are
five resolution settings: D1, 1080N, 960H, 720P and CIF. It is
recommended to encode all four channels in 720P resolution
in main stream and CIF resolution in Sub Stream.
> Resolution of D1 is (704x576)
> Resolution of 1080N is (944x1080)
> Resolution of 960H is (928x576)
> Resolution of 720P is (1280x720)
> Resolution of CIF is (352x288)
› FRAME RATE (FPS): The number of images (frames) that are
recorded by the DVR per second. The higher the number,
the smoother the video and higher the data transmission.
› BIT RATE TYPE: There are 2 types of bit rate, Variable Bit
Rate (VBR) and Constant Bit Rate (CBR).
> VBR encoding data consumption can vary by the amount
of data usage over time according to requirement. It
allocates a higher bit rate to more complex recordings,
such as one with a lot of movement in view. It allocates
a lower bit rate to recordings with no movement. It is
recommended to use VBR for the Main Stream as the
DVR can manage the allocation of data on the hard drive
wisely.
> CBR encoding data consumption is always constant. CBR
is useful when transmitting data over limited capacity
channels such as internet networks. The disadvantage of
CBR is that complex recordings may lose some information
and form fuzzy blocks on the video stream. It is recommended
to use CBR for the Sub Stream as it can ensure a constant
stream of video over the internet to remote devices.
MAIN
STREAM
SUB
STREAM
16 SYSTEM > GENERAL
The General menu allows configuration of basic system
settings.
› SYSTEM TIME: The date and time used to time stamp all
video footage, logs and notifications.
› DATE FORMAT: Preferred date format.
› DST: Used to reconfigure the time during Daylight Saving
(differs from country to country). Enter the dates and times
that Daylight Saving Time begins and ends according to
your locality.
› DATE SEPARATOR: Select preferred separator.
› TIME FORMAT: Select preferred time format (12 or 24 hrs).
› LANGUAGE: Select preferred language.
› HDD FULL: The way the DVR handles data storage when the
hard drive is full. Choose Overwrite to overwrite the oldest
recordings with new ones, or Stop to stop all recording.
› DVR NO.: Number allocated to the DVR.
› VIDEO STANDARD: Select video standard (PAL or NTSC).
The video standard in Australia is PAL.
› AUTO LOGOUT: Duration of inactivity before logging out
the current user. After auto-logout, the user is required to
enter their password to resume operation.
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