基于TMS320 DM642的MPEG-4视频编码算法优化

MPEG-4 Video Encoder Arithmetic Optimization Based onTMS320 DM642

给出基于TMS320DM642实验平台的MPEG-4实时编码实现方法.为了达到实时编码,在分析DM642硬件结构和指令特点的基础上,讨论了视频编码器的实现和优化策略,最后达到CIF格式(352×288)图像的实时编码.说明采用高性能性的DM642芯片,可满足视频实时编解码的要求.

The paper discusses an implementation of MPEG-4 simple profile video real-time encoder based on TMS320DM642. For the real-time requirement, after analyzing the hardware architecture and instruction characteristics of DM642, we present the implementation of video encoder and optimization methods. We achieve real-time encoder of CIF（352 × 288） pictures, which demonstrates that the high performance of DM642 can meet the requirement of video real-time encoder,