摘要
介绍一个基于嵌入式Linux和达芬奇平台的H.264视频监控传输系统的设计与实现。该系统通过NALU提取模块在达芬奇平台下从其视频压缩后的码流中搜索NAL单元的起始码从而提取出NAL单元,NAL单元经过处理后作为RTP的负载进行传输,而且系统还增加了码率控制模块,根据RTCP的统计信息包SR和RR求得丢包率、时延等情况估计网络拥塞状况来调整编码码率与发送端的发送速率,以获得在视频质量和带宽利用上的平衡。
The design and implementation of H.264 video monitoring transmission system are introduced.The starting code of NALU in video compressed data at Davinci platform is searched thought the NAL unit distilled module,then pushes video data to RTP thread as load.And in order to get the balance of quality of video and the bandwidth of net,rate control module is added to adjust the rate of video coding and sending based on the information of the SR and RR packet.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第4期724-728,共5页
Computer Engineering and Design
基金
广东省科技计划基金项目(2006B11501001)
