基于PNX1500的H.264视频编码器实现和优化

计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (16): 99-102.

基于PNX1500的H.264视频编码器实现和优化

包晓明^1,2，石志强¹

1.中国科学院软件研究所，北京 100080
2.中国科学院研究生院，北京 100039

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-01 发布日期:2007-06-01
通讯作者: 包晓明

H.264 video encoder implementation and optimization for PNX1500

BAO Xiao-ming^1,2，SHI Zhi-qiang¹

1.Institute of Software，Chinese Academy of Sciences，Beijing 100080，China 2.Graduate University，Chinese Academy of Sciences，Beijing 100039，China

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-01 Published:2007-06-01
Contact: BAO Xiao-ming

摘要/Abstract

摘要： 在基于PNX1500 DSP的视频监控系统中实现了H.264视频编码器，提出了一系列优化方案：利用PNX1500的MBS硬件处理能力计算半像素插值;在算法级简化了运动估计，提前判断宏块的跳过模式;在代码级，利用定制运算及编译优化选项，进一步提高了编码速度。测试结果表明，优化后的编码器可以实现对CIF格式视频流的实时编码。

Abstract: Gives an implementation of H.264 video encoder in a video monitoring system based on PNX1500 DSP platform，and proposes a series of optimization solutions：Firstly，calculates half-pixel interpolation using the MBS hardware of PNX1500;Secondly on H.264 algorithm level，predigests motion estimation and brings forward skip mode decision for macroblocks;Thirdly on code level，improves coding speed by using custom operations and compilation optimization options.Simulation results show the optimized encoder can encode CIF-format video stream in real time.

包晓明^1,2，石志强¹. 基于PNX1500的H.264视频编码器实现和优化[J]. 计算机工程与应用, 2007, 43(16): 99-102.

BAO Xiao-ming^1,2，SHI Zhi-qiang¹. H.264 video encoder implementation and optimization for PNX1500[J]. Computer Engineering and Applications, 2007, 43(16): 99-102.