opencv64

error: OpenCV(4.8.1) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

1

i am unable to load screen. this is the code i used import cv2 cap = cv2.VideoCapture('rtsp://admin:[email protected]:554/1') facedetect=cv2.CascadeClassifier('haarcascade_frontalface_default.xml') while True: ret, frame = cap.read() gray=cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) faces=facedetect.detectMultiScale(gray, 1.3 ,5) for...