python读取两路ip摄像头实时直播监控

import numpy as np
import cv2
import multiprocessing
from multiprocessing import  Queue
import time
 
CAMERA_COUNT=4 #摄像头个数
url="http://admin:[email protected]:8081/"#外置摄像头地址及密码
video = "http://admin:[email protected]:8081/"
video1 = "http://admin:[email protected]:8081/" 
# 不同进程不能共享内存，定义队列进行进程通信
q = Queue()
 
def video_read(id):
    camera_id = id
    #使用笔记本自带的摄像头
    if camera_id == 0:
       cap = cv2.VideoCapture(0)
       
    #使用外置的摄像头
    if camera_id == 1: 
       cap = cv2.VideoCapture(url)

    if camera_id == 2: 
       cap = cv2.VideoCapture(video)
    if camera_id == 3: 
       cap = cv2.VideoCapture(video1)
    # 获取每一个视频的尺寸
    width = (int(cap.get(cv2.CAP_PROP_FRAME_WIDTH)))
    height = (int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT)))
    print(width,height)
    
    while (cap.isOpened()):
        ret,frame = cap.read()
        frame = cv2.resize(frame, (960, 720), interpolation=cv2.INTER_CUBIC)
        isEmpty = q.empty()
        print(isEmpty )
        if isEmpty == True:
            print('队列中无数据！')
            #q.put(frame)
            time.sleep(0.001)
            
        else:
            print('队列中有数据！')
            #Frame = q.get(frame)
            time.sleep(0.002)
            #frameUp = np.hstack(frame, Frame)#左右合并
        #frameUp = np.vstack((frameLeftUp, frameRightUp))#上下合并
        
        cv2.imshow('camera'+str(id), frame )
        key = cv2.waitKey(10)
        if int(key) == 113:
            break
 
    cap.release()
#---------------------------------------------------------------------------------
if __name__ == '__main__':
    print("主进程开始启动！")
    for index in range(CAMERA_COUNT):
        print('摄像头的索引号是：',index)
        p = multiprocessing.Process(target = video_read, args = (index,))
        p.start()
    print('程序结束！')