视频按帧截取图片python脚本

import cv2
import os

def mov2img():
    #视频所在文件夹此处为相对路径，建议填相对路径
    files = os.listdir("./mov_clear/")
    counter = 0
    for i in range(len(files)):
        name_tmp = files[i]
        path = './img_clear/'   #输出图片的路径，建议填相对路径
        print(path)
        print(name_tmp)
        vc = cv2.VideoCapture('./mov_clear/'+ name_tmp) #读入视频文件
        print('./mov_clear/'+ name_tmp)
        c=1

        if vc.isOpened(): #判断是否正常打开
            rval , frame = vc.read()
        else:
            rval = False
         
        print(rval)  #读取到视频则输出True
        timeF = 1  #视频帧计数间隔频率
            
        while rval:   #循环读取视频帧
            rval, frame = vc.read()
            if(c%timeF == 0): #每隔timeF帧进行存储操作
                counter += 1
                #下面是命名方式，可以根据需要修改
                if len(str(counter)) == 1:
                    file_name = "0000" + str(counter) + '.jpg'
                if len(str(counter)) == 2:
                    file_name = "000" + str(counter) + '.jpg'
                if len(str(counter)) == 3:
                    file_name = "00" + str(counter) + '.jpg'
                if len(str(counter)) == 4:
                    file_name = "0" + str(counter) + '.jpg'
                if len(str(counter)) == 5:
                    file_name = str(counter) + '.jpg'
                cv2.imwrite(path + file_name, frame) #存储为图像
            c = c + 1    
        vc.release()
  
mov2img()