In this paper, some key technology of MPEG-4 standard is analyses, and a solution of IR video surveillance system of substations based on MPEG-4 Visual is introduced.

A real-time embedded design of MPEG-4 visual simple profile and advanced audio coding decoder using Digital Signal Processor and ARM9 core are presented in this paper.

In order to support content based functions in the visual standard of MPEG 4, each frame of video sequences should be represented in terms of video object planes (VOP's).