使用OpenCV进行视频读写

#include <opencv/cxcore.h>

#include <opencv/highgui.h>

#include <opencv/cv.h>



#undef RC_OPENCV_2_1_0



#ifdef _DEBUG

#ifdef RC_OPENCV_2_1_0

#pragma comment( lib, "cxcore210d.lib" )

#pragma comment( lib, "cv210d.lib" )

#pragma comment( lib, "highgui210d.lib" )		

#else

#pragma comment( lib, "opencv_core220d.lib" )

#pragma comment( lib, "opencv_highgui220d.lib" )

#pragma comment( lib, "opencv_imgproc220d.lib" )

#endif

#else

#ifdef RC_OPENCV_2_1_0

#pragma comment( lib, "cxcore210.lib" )

#pragma comment( lib, "cv210.lib" )

#pragma comment( lib, "highgui210.lib" )

#else

#pragma comment( lib, "opencv_core220.lib" )

#pragma comment( lib, "opencv_highgui220.lib" )

#pragma comment( lib, "opencv_imgproc220.lib" )

#endif

#endif



void main()

{

    /** 打开输入视频文件 */

    cv::VideoCapture vc;

    vc.open( ".//test.avi" );

    

    if ( vc.isOpened() )

    {

        /** 打开输出视频文件 */

        cv::VideoWriter vw;

        vw.open( ".//output.avi", // 输出视频文件名

                (int)vc.get( CV_CAP_PROP_FOURCC ), // 也可设为CV_FOURCC_PROMPT，在运行时选取

                (double)vc.get( CV_CAP_PROP_FPS ), // 视频帧率

                cv::Size( (int)vc.get( CV_CAP_PROP_FRAME_WIDTH ), (int)vc.get( CV_CAP_PROP_FRAME_HEIGHT ) ), // 视频大小

                true ); // 是否输出彩色视频



        /** 如果成功打开输出视频文件 */

        if ( vw.isOpened() )

        {

            while ( true )

            {

                /** 读取当前视频帧 */

                cv::Mat frame;

                vc >> frame;



                /** 若视频读取完毕，跳出循环 */

                if ( frame.empty() )

                {

                    break;

                }



                /** 将视频写入文件 */

                vw << frame;

            }

        }

    }



    /** 手动释放视频捕获资源 */

    vc.release();

}