Справочник Пользователя для VIVOTEK 4X-IP7142

This chapter explains how to select the streaming source, transmission mode and saving options 
at local computer. It is composed of the following four sections: Stream Options, MPEG-4 Media 
Options, MPEG-4 Protocol Options and MP4 Saving Options. When completed with the settings 
on this page, click Save on the page bottom to take effect.

The Network Camera supports MPEG-4 and MJPEG dual streams. For more information, 
please refer to Video settings on page 39.

Select to stream video or audio data. This works only when the video mode is set to MPEG-4.

Depending on your network environment, there are four transmission modes of MPEG-4 
streaming:

UDP unicast: This protocol allows for more real-time audio and video streams. However, network 
packets may be lost due to network burst traffic and images may be broken. Activate UDP connection 
when occasions require time-sensitive responses and the video quality is less important. Note that each 
unicast client connecting to the server takes up additional bandwidth and the Network Camera allows up 
to ten simultaneous accesses.

UDP multicast: This protocol allows multicast-enabled routers to forward network packets to all clients 
requesting streaming media. This helps to reduce the network transmission load of the Network Camera 
while serving multiple clients at the same time. Note that to utilize this feature, the Network Camera 
must be configured to enable multicast streaming at the same time. For more information, see RTSP 
Streaming on page 34.