This paper proposes a reconfigurable video decoder architecture of motion compensation for multi-standard video coding including MPEG-2, MPEG-4 and H.264. Through top-down design methodology, we analyze the motion compensation algorithm of the targeted applications and extract the commonality of motion compensation algorithms among the three different standards. To design a reconfigurable processing element to perform the integer-sample and fractional-sample interpolation operations to simultaneously support the main video standards, a regular data flow is arranged during the design space exploration. In addition, the bandwidth reduction strategies are also adopted to reduce the memory access times and power consumption of motion compensation operations for high bandwidth requirement, especially in H.264. The design implementation of the proposed architecture is synthesized using TMSC 0.18um technology library and can operate at 108HMz to achieve the real time motion compensation coding of 1920x1088 at 30 frames per second in the three video standards.