VOD System with Web Pages from PowerPoint File

The three-screen streaming VOD system with three windows of instructor, navigator and PowerPoint is very popular in distant learning which needs high bandwidth. The paper proposes a new idea to reduce the bandwidth to improve userpsilas playing experience by mainly using Web pages transformed from PowerPoint in streaming VOD system instead of the ideas of transmitting screen pictures or screen captivating data stream. Especially, in poor web environment, the transformed PowerPoint Web pages is compressed in further step to ensure the users can accept three-screen streaming courseware by analyzing PowerPoint web pages.