Blackmagic Ultrasonic Mini Recorder是否兼容OpenCV？

Question

是否可以将Black Magic Ultrasonic Mini Recorder（Thunderbolt连接）中的视频导入OpenCV（Python）中？ Blackmagic Desktop Video 11.2和OpenCV 3.4。

OpenCV似乎无法识别Blackmagic输入。我尝试更改视频捕获指数，但似乎没有任何效果。

import numpy as np
import cv2
from matplotlib import pyplot as plt
cap = cv2.VideoCapture(0)

while(True):
    # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

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

# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()