多媒体监控系统中音视频实时复用的一种策略

多媒体监控系统中音视频实时复用的一种策略 A Strategy of Real-time Video and Audio Multiplexing in Multimedia Surveillance System 袁登涛 YUAN Deng-tao 1 2 first-author 陈平 CHEN Ping 1 2 沈芸 SHEN Yun 1 2 石鸿凌 SHI Hong-ling 1 2 苏祥芳 SU Xiang-fang 1 2 孙洪 SUN Hong 1 2 武汉大学电子信息学院 武汉大学电子信息学院 School of Electronic Information, Wuhan University School of Electronic Information, Wuhan University 武汉大学电子信息学院,湖北,武汉,430072 武汉大学电子信息学院,湖北,武汉,430072 根据基于MPEG-1的多媒体监控系统音、视频实时复用的原理,结合MPEG-1的系统层规范和限制,并在一些现有的复用策略的基础上,提出了一种基于媒体流时间标签关系的复用算法.该算法通过监测STD缓冲区状态和不断更新STD缓冲区来控制复用器实时交织.用软件实现了该算法,实验结果表明了该算法的有效性和合理性. We put forward a novel video and audio multiplexing algorithm, which is based on investigation of relationship between Time-Stamps of multimedia streams and principles of real-time video and audio multiplexing in a MPEG-1 based multimedia surveillance system. This algorithm control real-time inter-weaver by surveying the status of STD buffer and updating the STD buffer constantly. This algorithm also takes system layer standards and restrictions of MPEG-1 into account. We have verified the validity and the rationality of this algorithm by software experiments. 监控系统 视频编码 音频编码 复用 同步 surveillance system multiplexing synchronization video encoding audio encoding TN919.8 国家自然科学基金（69572030）资助项目 2002-03-01 2021-04-01 3