说明：  介绍了基于嵌入式平台PxA255的h．2“视频编码器的实现。在描述了视频编码器的硬件结构设计及视频采集 软件的实现的基础上，详细介绍了h．2“对视频编码标准的一些改进以及基于PXA255结构和删汇编指令的h．264编 码程序的 优化。实验结果表明，优化后的h．264编码程序能够对采集到的视频进行实时编码，该视频编码器运行 状态良好．
(Introduced based on embedded platform PxA255 of h. 2 " video encoder implementation. In the description of the video encoder video capture hardware architecture design and implementation of software based on the details of the h.2" some of the video coding standard improvement and PXA255-based structure and assembly instructions to delete of h. 264 coding process optimization. Experimental results show that the optimized h. 264 coding process can capture video in real time to encode the video encoder running in good condition.)