import cv2

# 获取本地摄像头

# folder_path 截取图片的存储目录

def get_img_from_camera_local(folder_path):

    cap = cv2.VideoCapture(0)

    i = 1

    while True:

        ret, frame = cap.read()

        cv2.imshow("capture", frame)

        print str(i)

        cv2.imwrite(folder_path + str(i) + '.jpg', frame)  # 存储为图像

        if cv2.waitKey(1) & 0xFF == ord('q'):

            break

        i += 1

    cap.release()

    cv2.destroyAllWindows()

# 获取网络摄像头，格式：rtsp://username:pwd@ip/

# folder_path 截取图片的存储目录

def get_img_from_camera_net(folder_path):

    cap = cv2.VideoCapture('rtsp://username:pwd@ip/')

    i = 1

    while True:

        ret, frame = cap.read()

        cv2.imshow("capture", frame)

        print str(i)

        cv2.imwrite(folder_path + str(i) + '.jpg', frame)  # 存储为图像

        if cv2.waitKey(1) & 0xFF == ord('q'):

            break

        i += 1

    cap.release()

    cv2.destroyAllWindows()

# 测试

if __name__ == '__main__':

    folder_path = 'D:\\img_from_camera\\'

    get_img_from_camera_local(folder_path)

原文：https://blog.csdn.net/weixin_41667664/article/details/80079924