Vivotek IP Surveillance User Manual download pdf (Page 135)

VIVOTEK - Built with Reliability

User's Manual - 135

The Video page determines the Liveview and recording streams of individual cameras in terms

of compression format, video resolutions, frame rate, and the constant bit rate settings.

The constant bit rate setting is especially important in that the sum of bandwidth consumed

for all recording streams must not exceed the 32Mbps threshold. The constant bit rate is like an

upper threshold placed on each video stream. The size of IP packets delivered from the network

camera will be maintained within the bit rate limitation.

By default, Stream 1 is the recorded stream, the NVR uses Stream 2 for live viewing.

5-3-2. Camera - Video

1. Type: The supported formats are: MJPEG and H.264. The MPEG-4 format is not

supported. If you change the bit rate and resolution settings of a camera, the conguration

applies to the camera rmware settings on its individual video stream. If a camera becomes

disconnected, your conguration change will not take effect util the camera come online

again.

2. Frame size: The applicable video resolutions comes available in a pull-down menu. For

different cameras, the applicable resolutions can vary.

3. Maximum frame rate: The applicable frame rate also varies from camera to camera. The list

of applicable frame rates is polled from individual cameras.

5. Video Quality:

Constant bit rate: This places an upper threshold to limit the bandwidths consumed for live

viewing and recording streams. If "---" (not available) is shown, your camera stream might

have been congured using a "xed quality" setting. You may need to open a web console

with it to convert the camera stream to be using the constant bit rate setting.

4. Intra frame period: This indicates the I-frame insertion period. Default is 1 second.

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Vivotek IP Surveillance User Manual Page 135