使用mci命令编写的avi播放器，除了正常的播放功能外还有祯定位的功能-use mci order to prepare the avi players, in addition to the normal functions of the broadcast also Zhen positioning function

利用directshow 编写的视频播放器，有播放暂停，停止，定位等功能，支持全格式（系统安装解码器前提下）-Prepared using directshow video player, with play, pause, stop, positioning and other functions, supports a full format (under the premise of the system installed decoder)