Vivotek VS8801 Specifications download pdf (Page 62)

VIVOTEK

62 - User's Manual

If JPEG mode is selected, the video server continuously sends JPEG images to the client, producing

a moving effect similar to a filmstrip. Every single JPEG image transmitted guarantees the same

image quality, which in turn comes at the expense of variable bandwidth usage. Because the media

contents are a combination of JPEG images, no audio data is transmitted to the client. There are three

parameters provided in MJPEG mode to control the video performance:

■ Frame size

You can set up different video resolution for different viewing devices. For example, set a smaller

frame size and lower bit rate for remote viewing on mobile phones and a larger video size and a higher

bit rate for live viewing on web browsers. Note that a larger frame size takes up more bandwidth. The

frame sizes are selectable in the following resolutions: QCIF, CIF, 4CIF, and D1.

■ Maximum frame rate

This limits the maximum refresh frame rate per second. Set the frame rate higher for smoother video

quality.

You can also select Customize and manually enter a value. The frame rate will decrease if you select

a higher resolution.

■ Video quality

The video quality can be adjusted to the following settings: Medium, Standard, Good, Detailed, and

Excellent. You can also select Customize and manually enter a value.

►

Video quality and fixed quality refers to the compression rate, so a lower value will produce higher

quality.

►

Converting high-quality video may significantly increase the CPU loading, and you may encounter

streaming disconnection or video loss while capturing a complicated scene. In the event of occurance,

we suggest you customize a lower video resolution or reduce the frame rate to obtain smooth video.

NOTE:

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Vivotek VS8801 Specifications Page 62