Bus Bandwidth Aware H.264/AVC Motion Compensation Design for High Definition Video Encoding

Abstract

H.264/AVC outperforms previous video coding with many other tools, but the complexity increases much. As the image resolution is high, the bus bandwidth and data read cycle are the most important problems for the real time processing decoder. Motion compensation is the main bottleneck, which can use about over 50% bandwidth of the total bandwidth. In this paper, we present a bandwidth aware motion compensation (BAMC) which can solve both the read cycle and the data bandwidth problems in various systems. BAMC saves 60-80% MC read cycle and 50-85% data bandwidth at the system with DDR1-32bit or DDR2-64 bit. The proposed MC hardware can supports 1088-60 p real-time processing with less than 266 MB/S total bus memory bandwidth.