Opencv reads avi video and reports an error: number < Max_ number in function ‘icvExtractPattern

Use cv2.VideoCapture() Function read .avi Video extraction frame , Used before, no problem , This time, an error occurred .

Reference resources ：https://stackoverflow.com/questions/60651352/cvvideocaptureopen-videoiocv-images-raised-opencv-exception

solve ： stay VideoCapture Function API Preferences to force the backend , Add cv2.CAP_FFMPEG Parameters .

cap = cv2.VideoCapture(video_path, cv2.CAP_FFMPEG)