import numpy as np
import cv2

cap = cv2.VideoCapture(0)
cap.set(3,640)
cap.set(4,480)

while(True):
    ret, frame = cap.read()
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    
    cv2.imshow('frame', frame)
    cv2.imshow('gray', gray)
    
    k=cv2.waitKey(30) & 0xff
    if k == 27:
        break
    
cap.release()
cv2.destroyAllWindows()