1、android手机上安装一款APP：IP摄像头，app的图片如上图

2.调用代码如下

import cv2cv2.namedWindow("camera", 1)
# 开启ip摄像头
video = "http://admin:admin@10.0.0.32:8081/"  # 此处@后的ipv4 地址需要改为app提供的地址
cap = cv2.VideoCapture(video)
#　　开摄像头
while True:# Start Camera, while true, camera will runqret, image_np = cap.read()# Set height and width of webcamqheight = 600width = 1000# Set camera resolution and create a break function by pressing 'q'cv2.imshow('object detection',image_np)# cv2.resize(image_np, (width, height)))if cv2.waitKey(25) & 0xFF == ord('q'):cap.release()cv2.destroyAllWindows()breakprint(cap.get(cv2.cv2.CAP_PROP_FRAME_COUNT))
# Clean up
cap.release()
cv2.destroyAllWindows()#保存文件fps = 30size = (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)), int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))# 调用VideoWrite（）函数
videoWrite = cv2.VideoWriter('MySaveVideo.avi', cv2.VideoWriter_fourcc('I', '4', '2', '0'), fps, size)# 先获取一帧，用来判断是否成功调用摄像头
success, frame = cap.read()# 通过设置帧数来设置时间,减一是因为上面已经获取过一帧了
numFrameRemainling = fps * 10 - 1# 通过循环保存帧
while success and numFrameRemainling > 0:videoWrite.write(frame)success, frame = cap.read()numFrameRemainling -= 1# 释放摄像头
cap.release()

3.效果图如下