VIVOTEK
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: Target bit rate:
A complex scene generally produces a larger file size, meaning that higher bandwidth will be needed for data transmission. To regulate the bandwidth consumption and storage space for recording videos, you can select the Constant bit rate methodology. The firmware will try its best to contain the size of video packets within the limitation of a constant bit rate. This methodoloy enables easier calculation of the network bandwidth and storage space required for live viewing or video recording.
The bandwidth utilization is configurable 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.
•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 configured, the
You can also select Customize and use the slide bar to designate image quality.
Drag the slide bar to configure a quality level you prefer.
56 - User's Manual
