This paper introduces the principles of encoder and decoder of H.264/AVC,and analyzes on the main techniques of H.264/AVC such as layered design,intraframe prediction coding,and interframe prediction coding,etc.

• 264/AVC编码器、解码器的原理；分析了H.；264的主要技术如分层设计、帧内预测编码、帧间预测编码等。