'showing image from 4k video
Hi i'm using opencv to read the frame of a 4k video:
ret, frame = cap.read()
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
cv2.imshow('frame', gray)
but it does not work. It shows:
error: OpenCV(4.5.5) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'
but when i try the same function with a 1080p video, it works fine. Can someone please help me?
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