【摘要】 提出基于Intel PXA27X微处理器开发平台,在Linux操作系统上实现MPEG-4编码软件设计。介绍了MPEG-4的视频标准、编码关键技术以及编码软件实现部分,并进行针对Intel PXA27X处理器软件的优化和实际平台的测试。测试结果表明作为商用PDA的MPEG-4编码可以满足用户的对视频的需求,其速度达到了20帧/s,且有较高的压缩率,码流比较平稳,并有较好的质量。更多还原

【Abstract】 The thesis introduces the software designed implementation of MPEG-4 encoder based on Intel PXA27X micro-processor,in the Linux operating system.The MPEG-4 standard,MPEG-4 encoder key technologies and implementation of MPEG-4 encoder software are introduced.software optimization and test through Intel PXA27X processor are finished,results show the MPEG-4 encoder of commercial PDA can satify the user′s shot need,which reaches 20 frames/s,it has high compression,steady bitrate and good quality.更多还原