Method get_num_devices

monai/data/video_dataset.py:230–241

Get number of possible devices detected by OpenCV that can be used for capture.

()

    @staticmethod
    def get_num_devices() -> int:
        """Get number of possible devices detected by OpenCV that can be used for capture."""
        if not has_cv2:
            return 0
        num_devices = 0
        while True:
            cap = cv2.VideoCapture(num_devices)
            if not cap.read()[0]:
                break
            num_devices += 1
            cap.release()
        return num_devices

    def __iter__(self):
        frame_count = 0