H.264 is the most advanced video encoding standard, and its high complexity is the bottleneck in its applications. Based on the DSP of TI' S TMS320DM6446, a X264 encoder is designed. The local average difference of histogram is introduced to the amount determination of reference frames, and the little diamond search algorithm is used in the movement estimation process. Experiment results indicated that, quasi real time encoder of CIF video is achieved, while high image quality is preserved.%H.264协议是目前最先进的视频编码标准,高复杂度是算法推广的最大瓶颈;提出一种采用TI公司多媒体处理器DavinciTMS320DM6446为核心硬件平台的X264编码器实现方案,该方案采用了局部直方图平均差值进行参考帧数确定,运动估计采用小菱形搜索算法;实验结果标明,在保证图像质量条件下,编码器达到了CIF分辨率视频的准实时压缩要求.
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