本文主要是介绍《OpenCV》Part10 OpenCV3.1.0 openCV读取摄像头并保存为.avi视频，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
《OpenCV》Part10 OpenCV3.1.0 openCV读取摄像头并保存为.avi视频
#include <opencv2/core.hpp>
#include <opencv2/opencv.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/videoio.hpp>//for camera
#include <opencv2/video.hpp>
#include <opencv2/imgproc//imgproc.hpp>
#include <opencv2/ml/ml.hpp>#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/ml/ml.hpp"
#include <time.h>
#include <ctime>
#include <iostream>
#include <string>
using namespace std;
using namespace cv;int main(int argc, char ** argv)
{char filename[1024];if (argc == 1)sprintf(filename, "%s", "camera.avi");if (argc == 2)sprintf(filename, "%s", "123");VideoCapture capture;capture.open(0);if (!capture.isOpened()){cout << "Could not initialize capturing...\n" << endl;return -1;}//按时间格式命名time_t now = time(NULL);获取1970.1.1至当前秒数time_tstruct tm * timeinfo = localtime(&now); //创建TimeDate,并转化为当地时间，//struct tm * timeinfo = gmtime ( &currTime ); //创建TimeDate,并转化为GM时间，char path[60];strftime(path, 60, "%Y_%m_%d_%H_%M_%S", timeinfo);char strPath[100];sprintf(strPath, "%s.avi", path);//将创建文件的命令存入cmdchar中//保存为avi格式视频Mat frame;VideoWriter writer;writer.open(strPath, CV_FOURCC('X', 'V', 'I', 'D'), 25, Size(640, 480), true);//Size(640, 480)//Size(frame.rows, frame.cols)//"cam.avi"int n = 1;while (true){capture >> frame;char* cstr = new char[120];sprintf(cstr, "%s%d%s", "D:\\OpenCVWorkSpace\\saveCamAsVideo\\saveCamAsVideo\\savedPic\\Pic", n++, ".jpg");imwrite(cstr, frame);imshow("Video_Capture", frame);if (frame.empty()){break;}writer << frame;waitKey(3);}//return 0;
}该程序功能为读取摄像头后将视频存储为avi格式。
其中的waitKey(3)如果没有的话程序容易未响应。
CV_FOURCC('P','I','M','1') = MPEG-1 codec
CV_FOURCC('M','J','P','G') = motion-jpeg codec
CV_FOURCC('M', 'P', '4', '2') = MPEG-4.2 codec
CV_FOURCC('D', 'I', 'V', '3') = MPEG-4.3 codec
CV_FOURCC('D', 'I', 'V', 'X') = MPEG-4 codec
CV_FOURCC('U', '2', '6', '3') = H263 codec
CV_FOURCC('I', '2', '6', '3') = H263I codec
CV_FOURCC('F', 'L', 'V', '1') = FLV1 codec
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