安装OpenCV

pip install opencv-python

python OpenCV 打开摄像头

import cv2WIDTH  = 1080
HEIGHT = 720cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, WIDTH)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, HEIGHT)while True:ok,frame = cap.read()# print("ok", ok)# print("frame", frame)cv2.imshow("camera video", frame)if (cv2.waitKey(1) & 0xFF) == ord('q'):breakcap.release()
cv2.destroyAllWindows()

参考

• python实现opencv调用摄像头
• Python3使用opencv调用摄像头录制高清视频
• 关于OpenCV的坑
• python+opencv+FFmpeg rtmp推
• 如何使用OpenCV RTMP直播推流
• 基于OpenCV与UDP实现的视频流传输