Extracting frames every second of all videos in folder

I am trying to extract a frame every second of a video, while having multiple videos in a folder. I got it working for 1 video like this, but I think I am messing up my loop for all videos. Below is the code for 1 video that works.

import cv2pathOut = r"C:/Users/Me/Out/"vidcap = cv2.VideoCapture(r'C:\Me\Desktop\test.mp4');count = 0success = Truewhile success:    success,image = vidcap.read()    print('read a new frame:',success)    if count%30 == 0 :         cv2.imwrite(pathOut +'frame%d.jpg'%count,image)    count+=1

With the loop for all videos I made it up like this.

import osimport cv2pathOut = r"C:/Users/Me/Out/"count = 0success = Truecounter = 1listing = os.listdir(r'C:/Users/Me/videos/train')for vid in listing:    vid = r"C:/Users/Me/videos/train/"+vid    cap = cv2.VideoCapture(vid)    count = 0    counter += 1    while success:        success,image = cap.read()        print('read a new frame:',success)        if count%30 == 0 :             cv2.imwrite(pathOut +'frame%d.jpg'%count,image)        count+=1

My vid loop does not seems to work because it is only taking one video. Then it states false, probably because there are no frames left, but I do not know how to push it forward to the next video. I think I need to do some minor adjustment, does anybody have any idea what exactly?