是哟个ov5640相机转usb相机
单独插一个相机没用,怎么都打不开,同时插两个就打开了
之后拔掉一个相机,另一个相机保持不动 ,就能一直看
#!/usr/bin/env python3 # -*- coding:utf-8 -*- import numpy as np import cv2 #sudo apt install v4l2loopback-dkms cap = cv2.VideoCapture(0) # 从摄像头中取得视频 cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640) cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480) # 获取视频播放界面长宽 #width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH) + 0.5) #height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT) + 0.5) # 定义编码器 创建 VideoWriter 对象 #fourcc = cv2.VideoWriter_fourcc(*'mp4v') # Be sure to use the lower case #out = cv2.VideoWriter('output.mp4', fourcc, 20.0, (width, height)) while(cap.isOpened()): #读取帧摄像头 ret, frame = cap.read() if ret == True: #输出当前帧 #out.write(frame) cv2.imshow('My Camera',frame) #键盘按 Q 退出 if (cv2.waitKey(1) & 0xFF) == ord('q'): break else: break # 释放资源 #out.release() cap.release() cv2.destroyAllWindows()