Warning: file_get_contents(/data/phpspider/zhask/data//catemap/8/python-3.x/15.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Python OpenCV对帧进行计数,但不读取帧_Python_Python 3.x_Opencv_Image Processing_Video Processing - Fatal编程技术网

Python OpenCV对帧进行计数,但不读取帧

Python OpenCV对帧进行计数,但不读取帧,python,python-3.x,opencv,image-processing,video-processing,Python,Python 3.x,Opencv,Image Processing,Video Processing,我下载了一个视频数据集,我正在尝试访问它的帧。下面是代码,它正确计算视频帧,但当我打印帧时,它返回零矩阵。这个代码有什么问题?非常感谢您的帮助 (我还可以在opencv窗口中正确地看到帧:cv2.imshow('a',frame) 我解决了它,问题是Google Colab无法访问我的本地计算机。您希望打印什么?它在控制台窗口中打印一些(几乎)无意义的文本,如:[[0,0,0],[0,0,0],…,[255,255,255],[255,255],[255,255],[255,255],…。 de

我下载了一个视频数据集,我正在尝试访问它的帧。下面是代码,它正确计算视频帧,但当我打印帧时,它返回零矩阵。这个代码有什么问题?非常感谢您的帮助

(我还可以在opencv窗口中正确地看到帧:cv2.imshow('a',frame)


我解决了它,问题是Google Colab无法访问我的本地计算机。

您希望打印什么?它在控制台窗口中打印一些(几乎)无意义的文本,如:
[[0,0,0],[0,0,0],…,[255,255,255],[255,255],[255,255],[255,255],…
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