User`s manual
VIVOTEK
User's Manual - 57
The frame rate will decrease if you select a higher resolution�
■ Intra frame period
Determine how often to plant an I frame� The shorter the duration, the more likely you will get
better video quality, but at the cost of higher network bandwidth consumption� Select the intra
frame period from the following durations: 1/4 second, 1/2 second, 1 second, 2 seconds, 3
seconds, and 4 seconds�
■
Video quality
Constant bit rate:
• Constant bit rate: A complex scene generally produces a larger le size, meaning that
higher bandwidth will be needed for data transmission. The bandwidth utilization is
congurable to match a selected level, resulting in mutable video quality performance.
The bit rates are selectable at the following rates: 20Kbps, 30Kbps, 40Kbps, 50Kbps,
64Kbps, 128Kbps, 256Kbps, 512Kbps, 768Kbps, 1Mbps, 2Mbps, 3Mbps, 4Mbps,
6Mbps, and 8Mbps� You can also select Customize and manually enter a value�
The camera automatically adjusts the size of video streaming packets to keep it
under the specied limitation.
• Fixed quality: On the other hand, if Fixed quality is selected, all frames are
transmitted with the same quality; bandwidth utilization is therefore unpredictable.
When so congured, the frame-rate-per-second performance can be compromised
in the event of insufficient bandwidth or network clogs� The video quality can be
adjusted to the following settings: Medium, Standard, Good, Detailed, and Excellent.
You can also select Customize and drag the slide bar to change the quality setting�