OpenCv 012---视频文件读写-白红宇

OpenCv 012---视频文件读写

阅读量：5371 次

发布时间：2019-06-15

本文共 1432 字，大约阅读时间需要 4 分钟。

1 前备知识

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2 所用到的主要OpenCv Class

VideoCapture capture;    capture.open("G:\\CVworkstudy\\program_wwx\\研习社140课时\\ZhaiZhigang140\\vtest.avi");

VideoWriter writer("G:\\CVworkstudy\\program_wwx\\研习社140课时\\ZhaiZhigang140\\test.avi", CV_FOURCC('D', 'I', 'V', 'X'), fps, S, true);

3 程序代码

同OpenCv研习社例程代码

#include
     
      #include
      
       using namespace cv;using namespace std;int main(int argc, char** argv) {    // 打开摄像头    // VideoCapture capture(0);     // 打开文件    VideoCapture capture;    capture.open("G:\\CVworkstudy\\program_wwx\\研习社140课时\\ZhaiZhigang140\\vtest.avi");    if (!capture.isOpened()) {        printf("could not read this video file...\n");        return -1;    }    Size S = Size((int)capture.get(CV_CAP_PROP_FRAME_WIDTH),        (int)capture.get(CV_CAP_PROP_FRAME_HEIGHT));    int fps = capture.get(CV_CAP_PROP_FPS);    printf("current fps : %d \n", fps);    VideoWriter writer("G:\\CVworkstudy\\program_wwx\\研习社140课时\\ZhaiZhigang140\\test.avi", CV_FOURCC('D', 'I', 'V', 'X'), fps, S, true);    Mat frame;    namedWindow("camera-demo", CV_WINDOW_AUTOSIZE);    while (capture.read(frame)) {        imshow("camera-demo", frame);        writer.write(frame);        char c = waitKey(50);        if (c == 27) {            break;        }    }    capture.release();    writer.release();    waitKey(0);    return 0;}

4 运行结果

display：ignore

5 扩展及注意事项

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转载于:https://www.cnblogs.com/Vince-Wu/p/11182420.html

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