分析了基于HLA的仿真系统中记录与回放结构，研究了联邦执行时仿真数据的记录范围和方法。
The architectures of data logging and replay in HLA-based simulation system were analyzed. The scope and methods of simulation data logging during federation execution were researched.
在多媒体协作平台中，录制系统将实时协作过程中的音视频数据存储下来，用户通过回放可以重温整个会话过程。
In the multimedia collaboration platform, the record system stores the real video and audio data of the collaboration process, thus users can playback and review the whole recorded session later.
本系统实现了对视频数据的采集，编码（MPEG-4），检索回放等视频服务器的基本功能。
The basic functions of video monitoring system, including video data acquiring, encoding (MPEG-4), searching and playing back are accomplished by this system.
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