The characteristic of h . 264 standard can be concluded mainly into three aspects . it is more practicable , more adaptive to ip net and mobile system and it improves the key components of coding structure based on hybrid video coding framework . for example , it adds coding mode decision , multi frame prediction , context - based adaptive variable length coding ( cavlc ) , 4x4 integer transform , loopfilter , etc . the improvement in performance leads to higher computational complexity in the new standard H . 264的技术特点可以归纳为三个方面,一是注重实用;二是注重对移动和ip网络的适应;三是在混合编码器的基本框架下,对其主要关键部件都做了重大改进,如多模式运动估计、帧内预测、多帧预测、基于内容的变长编码、 4 4二维整数变换等。