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提前配置：

OpenCV:

代码：

（1）Iplimage类型

#include 
   
    #include "opencv2/highgui/highgui.hpp"#include "opencv2/imgproc/imgproc.hpp"using namespace std;using namespace cv;int main(){	string video_dir = "F:\\1.mp4";	string saveDir = "./image/";	CvCapture *capture = NULL;	IplImage *frame = NULL;	IplImage* temp = NULL;	IplImage *dst = NULL;	capture = cvCreateFileCapture(video_dir.c_str());//最后要cvReleaseCapture(&capture);	int src_frame_width = (int)cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH);//获取视频的宽	int src_frame_height = (int)cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT);//获取视频的高	CvSize size;	size.width = src_frame_width;	size.height = src_frame_height;	temp = cvCreateImage(size, IPL_DEPTH_8U, 1);//创建目标图像	CvSize dstSize = cvSize(temp->width / 8, temp->height / 8);	dst = cvCreateImage(dstSize, temp->depth, temp->nChannels);	char savePath[100];	int pictureNumbers = 0;	cvNamedWindow("video");	while (1)	{		frame = cvQueryFrame(capture);		cvCvtColor(frame, temp, CV_BGR2GRAY);//cvCvtColor(src,des,CV_BGR2GRAY)  		cvResize(temp, dst, CV_INTER_LINEAR);		cvShowImage("video", dst);		sprintf(savePath, "%s/%04d.jpg", saveDir, pictureNumbers);		cvSaveImage(savePath, dst);		cvWaitKey(1);	}	cvReleaseCapture(&capture);	cvReleaseImage(&dst);	cvDestroyAllWindows();	return 0;}
   

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#include 
   
    #include "opencv2/highgui/highgui.hpp"#include "opencv2/imgproc/imgproc.hpp"using namespace std;using namespace cv;int main(int argc, char **argv) {      //视频路径	string videoPath = "D:\\1.mp4";      //图像保存路径	string saveImagePath = "D:/image/1";	char saveChar[200];	// 创建了一个名为video的窗口用来显示帧	cv::namedWindow("video", cv::WINDOW_AUTOSIZE);	cv::VideoCapture cap;	// 读取视频文件	cap.open(videoPath);	cv::Mat frame;	int imageCount = 0;	while (true) 	{		// 按帧读取		cap >> frame;		if (frame.empty())			break;		cv::imshow("video", frame);		sprintf(saveChar, "%s/%04d.jpg", saveImagePath, imageCount);		cout << saveChar << endl;		imwrite(saveChar, frame);		imageCount++;		if (cv::waitKey(33) >= 0)			break;	}    destroyAllWindows();	return 0;}
   

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