An Research And Realization About Video Stream Compress Algorithm Based On OMAP5912

The realtime video streams are widely used in the scientific research or safe guard system. Digital picture processing technology go in depth, high quality video stream required by many apply. With the rapid development of semiconductor technology and the increasing mature development of graphics and image technology especially video codec technology, the multimedia technology based on embedded system has already turned into reality. The embedded system development technology changed rapidly, people heartily require low cost video stream collection system. All these needs make video stream collection system based on embedded system to be a hot spot.In this article, we discuss a kind of new video compression algorithms. Include H.263, MPEG-2, MPEG-4, H.264/AVC. We analyze the codec of MPEG-4 and H.264. Based on the analysis, we find the advantage and disadvantage of the MPEG-4 and H.264 Codec. Then we introduce how to develop under the embedded system, especially about the osk5912 development system. The OSK5912 development board included a dual core processor, 32M DDR and 32M Flash memory, 10M T-based Ethernet Interface.After introduce the hardware of the osk5912 platform. We begin to build the software development platform. We develop a low layer driver to run the USB camera. We discuss how to use the Video for Linux interface to collect video stream. Then we design a remote video collection system based on C/S structure. In this system, we realize video stream collection compression transmission and decompression.In the end of the paper, we realize a remote video stream collection system. The video stream server is running on the osk5912. The client is running on the PC workstation. The client send requests to video stream server, and get a serial of frame of video stream. We can control the video stream server by the client.