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Fast Variable Size Block Motion Estimation Algorithm for H.264/AVC System

H.264/AVC standard provides a significant improvement in digital video compression but it requires more computation power. In this paper a fast variable size block motion estimation algorithm based on adaptive search is implemented to describe a mode of variable size block motion compensation. This algorithm will adaptively change the threshold value depending upon the variable block sizes and is then compared with corresponding sum of difference (SAD) value. Finally the simulation results show that the proposed algorithm can provide a better quality of picture and also the time consume will be more.