import cv2#導入opencv包

video=cv2.VideoCapture(0)#打開攝像頭

fourcc = cv2.VideoWriter_fourcc(*‘XVID‘)#視頻存儲的格式
fps = video.get(cv2.CAP_PROP_FPS)#幀率
#視頻的寬高
size = (int(video.get(cv2.CAP_PROP_FRAME_WIDTH)),         int(video.get(cv2.CAP_PROP_FRAME_HEIGHT)))
out = cv2.VideoWriter(‘video.avi‘, fourcc, fps, size)#視頻存儲

while out.isOpened():
    ret,img=video.read()#開始使用攝像頭讀數據，返回ret為true，img為讀的圖像
    if ret is False:#ret為false則關閉
        exit()
    cv2.namedWindow(‘video‘,cv2.WINDOW_AUTOSIZE)#創建一個名為video的窗口
    cv2.imshow(‘video‘,img)#將捕捉到的圖像在video窗口顯示
    out.write(img)#將捕捉到的圖像存儲
    #按esc鍵退出程序
    if cv2.waitKey(1) & 0xFF ==27:
        video.release()#關閉攝像頭
        break

使用opencv-python錄視頻