Abstract:

AVS-M is a video coding standard for mobile application,which is part of the domestic Audio Videocoding Standard(AVS)series standards. AVS-M employs rate distortion optimization(RDO) techniques in interprediction mode decision，but it increases the computation complexity of mode decision procedure during the coding process.The paper proposes a fast interprediction mode decision algorithm. Firstly, early skip mode decision is employed, Secondly, inter mode decision based on binary search methods,division of macro block level makes use of the MAD(Mean Absolute Differences) method, and according to the pacetemporal correlation, the sub macro block is divided. The experiment results show that the algorithm can reduce the encoding time while maintaining similar video quality.

Key words: AVS-M;interframe prediction;mode decision