视频分割成帧序列

#include "iostream"
#include "opencv2/opencv.hpp"

using namespace std;
using namespace cv;

string videoname = "No_Event.Cam9.avi";

void main()
{
    VideoCapture capture(videoname);
    int frameH = capture.get(CV_CAP_PROP_FRAME_HEIGHT);
    int frameW = capture.get(CV_CAP_PROP_FRAME_WIDTH);
    int frameNumber = capture.get(CV_CAP_PROP_FRAME_COUNT);
    Mat frame;
    char name[5];
    for (int i = 1; i <= frameNumber / 50; i++)
    {
        sprintf_s(name, "%d", i);
        string s = "E:\\Noevent.Cam9_";
        string vname = s + name + ".avi";
        VideoWriter  writer(vname, CV_FOURCC('M', 'J', 'P', 'G'), 25, Size(frameW, frameH), 1);//每秒25帧
        for (int j = 1; j <= 50; j++)
        {
            capture >> frame;
            writer << frame;
            imshow("1", frame);
            waitKey(1);
        }
        writer.release();
    }
    capture.release();
}

适合用作自己制作样本

videoWriter writer('out.avi',cv2.cv.CV_FOURCC('M', 'J', 'P', 'G'), fps, size,0/1)

第一个参数是写入的视频文件名，第二个参数是视频编码的格式，第三个参数是帧率，第四个参数是视频的大小，最后一个参数是1则为默认保存彩色图，如不是则随视频颜色而定