vb高分辨率视频、VGA采集卡编程，源码。-vb high-resolution video, VGA capture card programming, source code.

directshow 实现视频采集　单帧模式 并对　采集到的一帧可以进行参数设置 即　_bmpeader-realize DirectShow video capture single frame mode, and collected a set of parameters that can be _bmpeader

diffrence betwenn two fram