OpenCV 计数帧但不读取它们

OpenCV counts frames but doesnt read them

我下载了一个视频数据集,我正在尝试访问它的帧。这是下面的代码,它可以正确计算视频帧,但是当我打印帧时它 returns 零矩阵。这段代码有什么问题?非常感谢任何帮助。

(我也可以在 opencv window 中正确看到帧:cv2.imshow('a',frame)

def get_video_files(glob_path):
    video_count,frames=0,0
    frame_list=[]
    for file in os.scandir(glob_path): #each video in the path
        video_count+=1
        cap = cv2.VideoCapture(file.path)
        while True:
            status, frame = cap.read()
            if not status:
                break
            frames += 1
            print(frame)
            frame_list.append(frame)
        cap.release()
    print (str(video_count)+' videos and '+str(frames)+' frames are found. Average frame count is '+"{:.3f}".format((frames/video_count)))  #RETURNS LOGICAL RESULTS
    print(frame_list)  #RETURNS ZERO MATRICES

我解决了,问题是Google Colab无法访问我的本地