双向视频教学系统是远程教学的一种新的重要教学手段，它能实现远程交互教学，提高教学质量。
Revesible video frequency teaching system is a new kind of important teaching method of distant teaching. It can realize distant teaching and studying and improve the teaching quality.
为了使应用程序员提高程序开发质量、缩短开发周期，本文设计实现了一个基于MPEG-4的视频解码平台。
The task of this research is to design and implement a video decoding platform based on MPEG-4 in order to enhance developing quality and shorten the developing period for the programmer.
实验结果表明，编码效率和视频序列的重建质量都得到了显著的提高。
Experimental results show that the coding efficiency and the quality of reconstructed sequence are improved significantly.
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