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在EAST托卡马克实验中,为了记录和重现等离子体的位形以分析托卡马克启动和等离子体成形控制的效果,采用视频点播系统配合高速视频采集设备,实现等离子放电视频的采集、发布、点播功能.系统采用高速摄像头获取放电的视频信号,用ffmpeg压缩以适于网络传输,自动发布最新放电视频,基于流媒体的点播服务器完成视频的检索及点播.同时将视频分解为帧序列图像,实现慢放及逐帧分析.系统已成功应用于EAST实验中.“,”To record and repeat plasma shape and position for analyzing effects of startup and plasma shape control in the EAST Tokamak experiments,a video on demand system assisted with video collection device has been designed and realized for the collection,deployment,and display of plasma discharge video. Highspeed camera acquired discharge video signals,then an ffmpeg tool was used to compress video for network transmission; new video file was auto deployed onto streaming VOD server for search and play. Video frames were also generated for slow playback and frame analysis. The system has been applied successfully in the EAST experiments.