E-learning platform, a full-scale supporting software system of web teaching, combines the real-time video, the real-time audio and the teaching tools. These characteristics make the information shared and communicated between teachers and students can be carried out by internet, which results in teaching and answering in-distance. It is the key technology and bottle-neck of the development of E-learning platform where video/audio media is controlled by software.A design idea of E-learning platform in view ...