摘要
传统安防、视频会议系统的音视频信号单独采集、分别存储给音视频信息的同步回放造成困难。本文以DM6446芯片为基础,音视频信号分别使用OggVobis和H.264标准进行编码,将编码压缩后的两路音视频码流封装成符合RIFF规范的AVI格式文件并存储以解决音视频同步回放问题。此解决方案不对现有的安防、视频会议应用架构进行任何改变,升级方便,同时经过实际系统性能测试表明,生成D1画质、单路16Kbps音频的情况下,系统占用CPU、内存资源量低,长时间运行稳定。
The two video and audio flows in the field of traditional security technology and video conference system formed from coded video and audio signal from corresponding capture device,then stored respectively.In this situation,synchronous playback is difficult.A method,based on DM6446,original video and audio signal coded by H.264 and Ogg Vorbis and then merged into one hybrid flow encapsulated by AVI conform standard RIFF,raised in our paper to solve playback question.Our solution bring no change to the current system architecture and convenient for system upgrade.Simultaneously,system performance test witness system performance stable with low CPU and main memory Utilization rate under D1 video and 16Kbps audio.
出处
《微计算机应用》
2011年第6期34-40,共7页
Microcomputer Applications
