Video conferencing can improve video quality, HD resolution video quality can bring users to the new system, immersive experience, greatly improve the efficiency and quality of the Conference. Meanwhile, the new system plug-and-play features and simple control features for video conferencing users is equally important. Video conference system, formerly known as video teleconferencing system, relying on the cable TV system, or transmission of television signals by microwave. But because of the video signal without consuming large amounts of bandwidth, so he can't transfer too many channels, long distance transmission offers video signal loss affected the clarity of the image. With the development of digital technologies, television signals with digital video compression significantly reduces bandwidth utilization and provides more channels at the same time, also has digital video decoding of error-correcting function, can restore a little distortion of the image.