Vivotek IP7330 Specifications download pdf (Page 47)

VIVOTEK

User's Manual - 47

■ 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

A complex scene generally produces a larger le size, meaning that higher bandwidth will be needed

for data transmission� Therefore, if Constant bit rate is selected, the bandwidth utilization is xed at

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, and 4Mbps. You can also select Customize and manually enter a value�

On the other hand, if Fixed quality is selected, all frames are transmitted with the same quality;

bandwidth utilization is therefore unpredictable. 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�

If JPEG mode is selected, the Network Camera 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

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.

■ 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. You can also select Customize, and manually enter a value�

■ Video quality

The video qualities are selectable at the following settings: Medium, Standard, Good, Detailed and

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

NOTE

►

The value of video quality and xed quality refers to the compression rate, so the lower value will

produce the higher quality.

Day/Night Settings

Switch to B/W in night mode

Select this to enable the Network Camera to automatically switch to B/W during night mode�

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 113 114

No comments

Vivotek IP7330 Specifications Page 47