Based on H.263, it makes use of several critical technique, such as advanced intra/inter prediction modes, 4 by 4 integer DCT transfer, motion estimation at 1/4 pixel level, and content-adaptive binary arithmetic coding.

• 它以H.；263为基础；采用了先进的帧内、帧间预测模式；4×4整数DCT变换；1/4精度运动估计和基于上下文的二进制算术编码等关键技术；使得H