摘要
为实现多媒体数据同步传输,在分析多媒体数据特点的基础上,给出了时域内考察多媒体同步关系的多媒体数据组成,并对目前多媒体同步传输方法进行比较,提出一种多媒体同步传输设计方法。该设计方法结合反馈控制机制,实现了没有全网同步时钟的相对时间戳同步控制,并为播放端设置了缓冲区,以抵消时延抖动,保证媒体内和媒体间的同步传输。设计采用相对时间戳方法,不需要获得精确时间,只要保证音视频同步打上时间戳即可,实现简单。
In order to achieve synchronization between the media transmission, we analyzed the characteristics of multimedia data, made the composition of multimedia data in the time domain, studied the relationship between multimedia synchronization, and compared the current method of transmission of multimedia synchroniza- tion. And a relative time-stamp Synchronization scheme based on feedback control without synchronous clock of whole power was brought forward. In order to assure media synchronization we set up the buffer in the receiving end to offset delay. The method is simple, because it does not require accurate time, but only marking audio and video time-stamp simultaneously.
出处
《吉林大学学报（信息科学版）》
CAS
2009年第6期573-578,共6页
Journal of Jilin University（Information Science Edition）
关键词
多媒体数据
同步技术
媒体间同步
时间戳
反馈机制
缓冲
multimedia data
synchronous technology
inter-media synchronization
timestamp
feedback mechanism
buffer
