Vivotek IZ7151 User Manual download pdf (Page 46)

VIVOTEK

46 - User's Manual

be needed for data transmission� Therefore, if Constant bit rate is selected, the bandwidth

utilization is fixed at a selected level, resulting in mutable video quality performances� The

bit rates are selectable at the following rates: 20Kbps, 30Kbps, 40Kbps, 50Kbps, 64Kbps,

128Kbps, 256Kbps, 512Kbps, 768Kbps, 1Mbps, 2Mbps, 3Mbps and 4Mbps�

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

bandwidth utilization is therefore unpredictable� The video qualities are selectable at the

following settings: Medium, Standard, Good, Detailed and Excellent�

If JPEG mode is selected, the Network Camera continuously sends JPEG images to the clients,

producing dynamic effects similar to movies� Every single JPEG image transmitted guarantees

the same image quality, which in turn comes at the expense of variable bandwidth usage� And

because the media contents are a combination of JPEG images, no audio data is transmitted to

the clients�

■

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�

■

Video quality

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

and Excellent�

NOTE :

► Before creating a privacy mask window, make sure the zoom operation is not activated.

► In a privacy mask window, motion detection will not take effect.

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 109 110

No comments

Vivotek IZ7151 User Manual Page 46