import cv2

cv2.namedWindow("camera", 1)

# 开启ip摄像头

video = "http://admin:admin@192.168.31.97:8081/" # 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 runq

#

# ret, image_np = cap.read()

#

# # Set height and width of webcamq

# height = 600

# width = 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()

# break

# print(cap.get(cv2.cv2.CAP_PROP_FRAME_COUNT))

# # Clean up

# cap.release()

# cv2.destroyAllWindows()

#保存文件

fps = 30

size = (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()