Vivotek NETWORK CAMERA IZ7151 - Manual (Page 45)

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The Network Camera switches on the infrared cut filter at all times to block the infrared light from
reaching the sensor so that the colors are not distorted�
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Night mode
The Network Camera switches off the infrared cut filter to allow the infrared light to pass through�
This helps the Network Camera to see more, especially in low light conditions�
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Schedule mode
The Network Camera switches between day mode and night mode based on specified schedule�
Enter the starting time and ending time for the day mode� Note that the time format is [hh:mm]
and is expressed in 24-hour clock time� By default, the starting time and ending time of day
mode are set to 07:00 and 18:00�
Video quality settings for stream 1 / stream 2 : Set two streams for the Network Camera for different
purposes� For example, set the Network Camera to a smaller frame size and a lower bit rate for
viewing on mobile phones� Or, set the Network Camera to a larger video size and a higher bit rate
for viewing on web browsers�
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Mode
The Network Camera offers two choices of video compression standards for real-time viewing:
MPEG-4 and Motion JPEG�
If MPEG-4 is selected, it is streamed in RTSP protocol� There are four dependent parameters
provided in MPEG-4 mode for video performance adjustment�
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Frame size
Select the video size� Note that a larger frame size takes up more bandwidth� The frame sizes
are selectable in the following resolutions: 176 x 144, 320 x 240 and 640 x 480�
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Maximum frame rate
This limits the maximal refresh frame rate per second� Set the frame rate higher for a smoother
video quality�
If the power line frequency is set to 50Hz, the frame rates are selectable at the following rates:
1fps, 2fps, 3fps, 5fps, 8fps, 10fps, 15fps, 20fps and 25fps� If the power line frequency is set to
60Hz, the frame rates are selectable at the following rates: 1fps, 2fps, 3fps, 5fps, 8fps, 10fps,
15fps, 20fps, 25fps and 30fps�
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Intra frame period
Determine how often to plant an I frame� The shorter the duration, the more likely you will get
a better video quality, but at the cost of higher network bandwidth consumption� Select the
intra frame period from the following duration: 1/4 second, 1/2 second, 1 second, 2 seconds, 3
seconds and 4 seconds�
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Video quality
A complex scene generally produces larger file size, meaning that higher bandwidth will