VIVOTEK - Built with Reliability
148 - User's Manual
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 64/96Mbps (8-/16-CH models) 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 conguration
applies to the camera rmware settings on its individual video stream. If a camera becomes
disconnected, your conguration 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 congured 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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