利用DirectShow进行文件播放，音频视频捕获并能利用系统已有的编码器对音频视频进行编码-for use DirectShow player, Audio and video capture system has been able to use the encoder to encode audio and video

一个摄像头捕获的类，可以自动枚举摄像头和声卡以及音频和视频编码器进行编码生成Avi文件-a camera caught the category, Enumerating automatic camera and sound cards, and audio and video encoder to encode documents generated Avi