Methods for opencv to read a video and save the image

import cv2
import os

video_path = '. /No helmet video 01/'.
image_path = './images/'

video_files = [i for i in (video_path) if ('.')[-1] in ['mp4']]
len(video_files)

# video_file:'. /unhelmeted video 01/cbc-east-enclosure-5_001_2021-03-22-18-04-28_2021-03-22-18-04-33.mp4',
# pic_dir:'CBSA-East Enclosure 5_001_2021-03-22-18-04-28_2021-03-22-18-04-33'
def get_image(video_file, pic_dir):
    if not (pic_dir):
        (pic_dir)
    
    # cv2 reading video files
    vc = (video_file)
    index = 0
    # Determine if a loaded video can be opened
    rval = ()
    while rval:  # Loop through the video frames
        index = index + 1
        
        rval, frame = ()
        # Save a picture every ten frames
        if index * 10 % 1 == 0:
            if rval:
                # ("capture", frame)
                save_file = pic_dir + str(index).zfill(5) + '.png'
                (save_file, frame)  # Store as image, save as folder name
                (1)
            else:
                break
        ()
    print("Saved %d" %(index - 1) + "A picture.")
        
# video_file = '. /unhelmeted video 01/01.mp4'
# pic_path = '01/'
# get_image(video_file, image_path + pic_path)

for file in video_files:
    video_file = video_path + file
    pic_path = image_path + ('.mp4', '/')
    get_image(video_file, pic_path)

import cv2
import os


def save_img():
    video_path = r'F:\test\3.10'
    videos = (video_path)
    for video_name in videos:
        file_name = video_name.split('.')[0]
        folder_name = video_path +'_'+ file_name
        (folder_name, exist_ok=True)
        print(video_path + '/' + video_name)
        vc = (video_path + '/' + video_name)
        # Read the video file
        c = 0
        rval = ()

        while rval:  # Loop through the video frames
            c = c + 1

            rval, frame = ()
            if c%10 ==0:
                pic_path = folder_name + '/'
                if rval:
                    (pic_path + str(c) + '.png', frame)  # Store as image, save as folder name
                    (1)
                else:
                    break
        ()
        print('save_success')
        print(folder_name)


save_img()

if not (path):
    (path)