我想从视频中获取图像并将其存储为“.jpeg”或“.png”格式，请帮助我如何使用opencv执行此操作我的代码是importcv2vidcap=cv2.VideoCapture('video1.mp4')success,image=vidcap.read()count=0;print"Iaminsuccess"whilesuccess:success,image=vidcap.read()cv2.imwrite("frame%d.jpg"%count,image)#saveframeasJPEGfileifcv2.waitKey(10)==27:#exitifEscapeishitb