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Chapter 5 Customizing NV DVR System
52
(3) Enable Audio
Select to assign the audio channel of the selected camera. You can only assign one audio
channel to one camera source. This way you can record both audio and video.
i
An Audio I/O card is required to use this function.
(4) Motion Detection
Adjust the sensitivity of the motion detector. The higher the value, the finer the sensitivity is
detected. When it detects a motion, a green triangle mark would appear at the upper left
corner of the screen.
(5) Voice Detection
Adjust the intensity of the audio detector. The system detects sound when it exceeds the
intensity value.
(6) Quality
Adjust the video quality. The higher the value, the lower the compression level and uses more
hard disk space.
(7) Frame Rate
Set the maximum and minimum number of frames to be recorded during motion and
motionless state. The frame rate ranges from 1 to 30 for NTSC and 1 to 25 for PAL. The
higher the frame rate, it uses more hard disk space.
(8) Video Size
Select the size of the video and click the ~ button. The higher the size, the larger the file it
create. You can also activate the Enable Deinterlace to enhance the video quality. Set the
Enable Deinterlace mode to #1, if you are capturing motionless picture and #2, if it captures
lots of movement.
(9) Video Screen
Display the video of the selected camera.
(10) Mask/Shield Edit
Mask, mark an area on the screen to disregards the motion in the marked area and to only
monitor outside the marked area. As for the Shield, it covers an area on the screen and the
covered area would not be visible on the screen and recorded. (see also
Chapter 5.3.1 and
5.3.2)
(11) Compression Type
Select from 3 compression types. User can refer the table
below to check the NV card supports what type of
compression. H264 is the latest and advanced video
compression format that delivers better video quality and
smaller file size but this uses more CPU resource. Advanced
MPEG4 and MJPEG, both provide a standard for color
picture compression rate. MPEG4 uses higher compression
rate and smaller file size. While MJPEG uses slightly lower
compression rate and bigger file size.