实现avi->bmp 与 bmp->avi 之间相互转换的功能 开发平台是VC与OpenCV,The realization of avi-> bmp and bmp-> avi conversion functions between the development platform is a VC and OpenCV

实现avi视频流的读取，并定位存储图像（bmp格式）-Avi video stream to achieve the reading, and positioning the storage image (bmp format)