Web-based Video Broadcast Technology

The rapid developing of Internet has changed our life and working style. And now we can communicate more conveniently and rapidly with Internet. In the first generation of Internet, because of its low speed, most contents we exchanged are characters or pictures. With developing of the second generation of Broad Band Internet, we can directly exchange our voice and video information. Under this background, our study of live video broadcast become more importantly. There are three parts in our live video broadcast system, image signal's gathering and compress, video server and client. This paper first introduces the globe view of the system and some image compressing basic knowledge, then presentss the two part of system in detail. The system compresses image signal with an MPEG-1 compress card. This paper emphasizes on discussing this card's device driver. The system can control this card in low level with the device driver. The card closely connects with the video server with the device driver, and improves the performance of the video server. In this system the video -server and client adopts HTTP protocol. This paper analyses the theory of video server and client. In this paper we also introduce a reliable real-time transport protocol.