Abstract
Motion Estimation (ME) is the most computationally intensive part of video compression systems. Multiple reference frame (MRF) ME used in H.264 standard increases the video coding efficiency at the expense of increased computational complexity and power consumption. Therefore, in this paper, we present a reconfigurable baseline H.264 video encoder hardware in which the number of reference frames used for MRF ME can be configured based on the application requirements in order to trade-off video coding efficiency and power consumption. The proposed H.264 video encoder hardware is based on an existing low cost H.264 intra frame coder hardware and it includes new reconfigurable MRF ME, mode decision and motion compensation hardware. The proposed H.264 video encoder hardware is capable of processing 55 CIF (352×288) frames per second and its power consumption ranges between 115mW and 235mW depending on the number of reference frames used for MRF ME.
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