源码在docx文档中，只有片段代码，仅供参考学习
#include <opencv2/highgui/highgui.hpp>#include <opencv2/imgcodecs/imgcodecs.hpp>#include <opencv2/imgproc/imgproc.hpp>#include <unistd.h>#include <sys/stat.h>#include <fcntl.h>using namespace std;using namespace cv;int main() { const char save_dir[256] = "pics/"; if (access(save_dir, 0) == -1) { cout << "目录不存在, 创建目录" << endl; mkdir(save_dir, S_IRUSR | S_IWUSR | S_IXUSR | S_IRWXG | S_IRWXO); } VideoCapture cap; Mat frame; frame = cap.open("../output.mp4"); if(!cap.isOpened()){ printf("cat open \n"); return -1; } int frame_count = 0; int save_count = 0; while (cap.read(frame) and save_count < 10){ frame_count = 1; if(frame_count % 30 == 0){ string save_name = save_dir to_string(save_count) ".jpg"; imwrite(save_name, frame); save_count = 1; } } return 0;}import os.path as ospimport osimport cv2if __name__ == '__main__': save_dir = 'pics' if not osp.exists(save_dir): print('目录不存在， 创建目录') os.mkdir(save_dir) video_cap = cv2.VideoCapture('../output.mp4') fps = video_cap.get(cv2.CAP_PROP_FPS) width = video_cap.get(cv2.CAP_PROP_FRAME_WIDTH) # video width height = video_cap.get(cv2.CAP_PROP_FRAME_HEIGHT) # video height frame_number = video_cap.get(7) # number of frames duration = int(frame_number // fps) frame_count = 0 save_count = 0 while True and save_count < 10: frame_count = 1 ret, frame = video_cap.read() if ret is False: break if frame_count % 30 == 0: save_name = osp.join(save_dir, str(save_count) '.jpg') cv2.imwrite(save_name, frame) save_count = 1
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