OpenCV camera Capture Video and save method

I. Reading a video sequence

OPENCV provides an easy-to-use framework for extracting image frames from video files and USB cameras, and if you simply want to read a video, you just need to create a cv::videocapture instance and extract each frame in the loop. Here the video is taken with the camera and saved as AVI file, the code is as follows:

#include <opencv2\highgui\highgui.hpp> #include <opencv2\imgproc\imgproc.hpp> #include <opencv2\core
\core.hpp> using namespace CV;
using namespace Std;
    int main () {//Open camera Videocapture captrue (0);
    Video Write Object Videowriter write;
    Write the video file name string Outflie = "E://fcq.avi";
    Get the width of the frame int w = static_cast<int> (Captrue.get (cv_cap_prop_frame_width));
    int h = static_cast<int> (Captrue.get (cv_cap_prop_frame_height));
    Size S (W, h);
    Get frame rate Double r = captrue.get (Cv_cap_prop_fps);
	Open video file, ready to write Write.open (Outflie,-1, R, S, True);
    Open Failed if (!captrue.isopened ()) {return 1;
    } bool stop = FALSE;
    Mat frame;
        Loop while (!stop) {//Read frame if (!captrue.read (frame)) break;
        Imshow ("Video", frame);
        Write file Write.write (frame);
        if (Waitkey () > 0) {stop = true;
 }}//Release object Captrue.release ();   Write.release (); 
	Cvdestroywindow ("Video"); 
return 0; }

A video file named "Fcq.avi" was created in the E-drive directory after it was run.