基于RTP/RTCP的空间多媒体通信音视频同步算法  

RTP/RTCP based Audio and Video Synchronization Algorithm for Cyberspace Multimedia Communication

作　　者：张斌[1] ZHANG Bin(91550 Forces,Dalian 116023,China)

机构地区：[1]91550部队

出　　处：《工业技术创新》2018年第2期10-12,共3页Industrial Technology Innovation

摘　　要：提出一种基于RTP/RTCP网络传输协议的空间多媒体通信音视频同步算法。在空间通信网络仿真系统构架下,实现空间多媒体通信仿真系统的构建。基于音视频同步控制系统规程和音视频RTP包之间的时间戳映射理论,提出音视频同步码误差检测与判决准则。在1 Mbps传输速率下对200 s(5 000帧)的视频进行测试,算法稳定,且耗时不到视频总长度的20%。与传统音视频同步算法相比,性能提升100%以上。A synchronous algorithm for audio and video(A/V)for cyberspace multimedia communication is proposed based on the RTP/RTCP network transmission protocol.Under the framework of the cyberspace communication network simulation system,the construction of the cyberspace multimedia communication simulation system is realized.Based on the workflow of A/V synchronization control system and time stamp mapping theory between A/V RTP packets,the error detection and decision criteria of A/V synchronization code is proposed.At the transmission rate of 1 Mbps,a video of 200 s(5000 frames)is tested,indicating that the algorithm is stable,and takes less than 20%of the total length of the video.Compared with the traditional A/V synchronization algorithm,the performance is increased by more than 100%.

关 键 词：空间多媒体 音视频同步控制系统 音视频同步算法 

分 类 号：TN919.85[电子电信—通信与信息系统]