DrectShow对视频流的截取和保存，并且实现了预览，对静态图片的保存。-DrectShow right Video Stream Interception and preservation and to achieve a preview of the preservation of static pictures.

This article describes a \"trick\" on how to capture video screen shots, regardless of the source (file, Webcast stream, TV-input).

从摄像头或者AVI文件中得到视频流，对视频流进行边缘检测，并输出结果。 -The video stream, the video stream for edge detection, and outputs the result obtained from the camera or the AVI file.