权限都已经给了，报错信息如下：

TellHardwareToSetFrameRate 30.000000
Stream::Start - v11
Stream::Start - resumed connection
Stream::Start - connect
True
Traceback (most recent call last):
  File "/SimpleShow/capVideo.py", line 10, in <module>
    cv2.imshow('video', frame)
cv2.error: OpenCV(4.5.2) /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/pip-req-build-2fjztvm5/opencv/modules/highgui/src/window.cpp:404: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'imshow'

Connection went invalid

完整代码：

import cv2

if __name__ == '__main__':
    cv2.namedWindow('video', cv2.WINDOW_AUTOSIZE)
    cap = cv2.VideoCapture(0)
    print(cap.isOpened())
    while True:
        ret, frame = cap.read()

        cv2.imshow('video', frame)
        key = cv2.waitKey(10)
        if key & 0xFF == ord('q'):
            break

    cap.release()
    cv2.destroyAllWindows()