import cv2, time, sys

width = int(sys.argv[1] if len(sys.argv) > 1 else '1920')
height = int(sys.argv[2] if len(sys.argv) > 2 else '1080')

cap = cv2.VideoCapture(0)
cap.set(3, width)
cap.set(4, height)
cap.set(5, 30)
cap.set(6, cv2.VideoWriter_fourcc(*'MJPG'))

while(True):
    start = time.time()
    frame = cap.read()[1]
    end = time.time()
    print("time to read a frame : {} seconds".format(end-start))

    # cv2.imshow('frame', frame)
    # if cv2.waitKey(1) & 0xFF == ord('q'):
    #     break

cap.release()
cv2.destroyAllWindows()