如何根据摄像头调整OpenCV直播的纵横比(Python)

import cv2

cap = cv2.VideoCapture(0)

width = cap.get(cv2.CAP_PROP_FRAME_WIDTH)
height = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)

aspect_ratio = width / height

new_width = 640
new_height = int(new_width / aspect_ratio)

cap.set(cv2.CAP_PROP_FRAME_WIDTH, new_width)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, new_height)

while True:
    ret, frame = cap.read()
    if not ret:
        break
    
    cv2.imshow('Camera', frame)
    
    if cv2.waitKey(1) == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()