import cv2

ID1 = 6
ID2 = 8
cam1 = cv2.VideoCapture(ID1, cv2.CAP_V4L2)
cam1.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter_fourcc(*'MJPG'))
cam2 = cv2.VideoCapture(ID2, cv2.CAP_V4L2)
cam2.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter_fourcc(*'MJPG'))

while True:
	ret1, frame1 = cam1.read()
	ret2, frame2 = cam2.read()
	
	cv2.imshow('Camera 1', frame1)
	cv2.imshow('Camera 2', frame2)
	
	if cv2.waitKey(1) == ord('q'):
		break
cam1.release()
cam2.release()
cv2.destroyAllWindows()