OpenCV通过按键控制保存视频并打时间戳人工智能龙性的腾飞的博客-

  #include <iostream> #include<opencv2/opencv.hpp>  using namespace std; using namespace cv; Mat frame; bool save_flag = false; int main() {  cv::VideoWriter videoWriter;  //原文链接：https ://blog.csdn.net/bloke_come/article/details/79455703  VideoCapture cap(CV_CAP_DSHOW + 0);  int w = static_cast<int>(cap.get(CV_CAP_PROP_FRAME_WIDTH));  int h = static_cast<int>(cap.get(CV_CAP_PROP_FRAME_HEIGHT));  cv::Size videoSize(w, h);   //time_t t_start = time(0);  //char video_name[64];  //strftime(video_name, sizeof(video_name), "%Y-%m-%d %H-%M-%S", localtime(&t_start)); //年-月-日 时-分-秒  //string temp_name = video_name;  //String videoPath = "video"+ temp_name + ".mp4";   //videoWriter.open(videoPath, CV_FOURCC('D', 'I', 'V', 'X'), 25, videoSize);  //if (!videoWriter.isOpened())  //{  // //MessageBoxA(NULL, "Save Failure", "Save", MB_OK);  // cout << "Can't open video!" << endl;  // return -1;  //}  cout << "Main Starting!" << endl;  while (cap.isOpened())  {   cap.read(frame);//从摄像头中读取当前这一帧    time_t t_t = time(0);   char ch[64];   strftime(ch, sizeof(ch), "%Y/%m/%d %H:%M:%S", localtime(&t_t)); //年-月-日 时-分-秒   cv::putText(frame, ch, cv::Point(10, 25), cv::FONT_HERSHEY_SCRIPT_COMPLEX, 1.0, cv::Scalar(0, 255, 255), 2, 8, 0);   cv::imshow("Video", frame);   int k_value = waitKey(10);   if (k_value == 27)   {    break;   }   else if (k_value == 's')   {    if (!save_flag) {     time_t t_start = time(0);     char video_name[64];     strftime(video_name, sizeof(video_name), "%Y-%m-%d %H-%M-%S", localtime(&t_start)); //年-月-日 时-分-秒     string temp_name = video_name;     String videoPath = "video" + temp_name + ".mp4";     videoWriter.open(videoPath, CV_FOURCC('D', 'I', 'V', 'X'), 25, videoSize);     if (!videoWriter.isOpened())     {      //MessageBoxA(NULL, "Save Failure", "Save", MB_OK);      cout << "Can't open video!" << endl;      return -1;     }     save_flag = true;     cout << "Start recording to " << videoPath << endl;    }    else     cout << "Video is recording, press 'e' key to end recording!" << endl;   }   else if (k_value == 'e')   {    if (save_flag) {     cout << "End recording!" << endl;     videoWriter.release();      /*写入文件关闭*/     save_flag = false;    }    else     cout << "Video recording is not starting yet!" << endl;   }   else if(k_value == 'q')   {    cout << "Key Value: "<<waitKey(1) << endl;   }    if(save_flag)    videoWriter.write(frame);  }  cap.release();     /*摄像机关闭*/  //videoWriter.release();      /*写入文件关闭*/  cv::destroyWindow("Video"); /*显示窗口销毁*/   return 0; }