一个很好的C++类，封装了directshow基本的视频预览，播放，分辨率设置。抓取图像等常用函数。-A good C++ class encapsulates the basic directshow video preview, playback, resolution settings. Crawl images commonly used functions.

播放网络摄像头视频 visual basic 6-Broadcast web camera ,write in visual basic 6