obj_detect_read_final_frames.py

files.sort(key=lambda f: int(re.sub('\D', '', f)))

for i in range(len(files)):
    filename=pathIn + files[i]
    
    #read frames
    img = cv2.imread(filename)
    height, width, layers = img.shape
    size = (width,height)
    
    #inserting the frames into an image array
    frame_array.append(img)