Vivotek IP3111/3121 - Manual (Page 50)

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is far less than JPEG in normal cases but it still depends on the level of difference between every two
sequential images. There are three dependent parameters provided for adjustment. "Maximum Frame
Rate" limits the maximal refresh frame rate that can be combined with the "Video Quality Control" to
optimize the bandwidth utilization and video quality. If users want to fix the bandwidth utilization
regardless of the video quality, choose "Fix Bit Rate" and select the desired bandwidth. The video quality
may be poor in order to send maximal frames within the limited bandwidth when images change
drastically. Consequently to ensure the video quantization rate regardless of the bandwidth, it will utilize
more bandwidth to send the maximal frames when images change drastically.
The option "Enable Motion Detection" will control the event of motion detection on the application page.
If this option is enabled, the preset windows framed by red lines will appear in the video window even if
no option is checked on the application page. If this option is disabled, then any settings related to motion
detection will have no effect. Motion detection will increase system load. Enter the motion detection
option page for advanced configuration.
To adjust video from external cameras, use "Flip" to map the video vertically and "Mirror" to map the
video horizontally.