使用Python+OpenCV将多级嵌套文件夹下的视频文件抽帧为JPG图片

import os
import cv2
import time

# 存放视频文件的多层嵌套文件夹路径
videoPath = 'D:\\videos\\'
# 保存抽帧的图片的文件夹路径
savePath = 'D:\\images\\'

if not os.path.exists(savePath):
    os.mkdir(savePath)
video_num = 0

for root, dirs, files in os.walk(videoPath):
    # 提取多级嵌套文件夹路径下的文件列表
    for video in files:
        print(video)
        if(video.endswith(".avi")):
            c = 1
            videofile = root + video
            vc = cv2.VideoCapture(videofile) #读入视频文件
            if vc.isOpened(): #判断是否正常打开
                video_num = video_num + 1
                rval , frame = vc.read()
                #print("正常打开：",video)
                if(video_num%100 == 0):
                    print(video_num)
            else:
                rval = False
                print("打开失败：",video)
                continue
    
            timeF = 25  #视频帧计数间隔频率
            try:
                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
                        cv2.imwrite(savePath + video[:-4] + '_' + str(time.time_ns()) + '.jpg',frame) #存储为图像
                    c = c + 1
                    cv2.waitKey(1)
            except:
                #print("error")
                continue
            vc.release()

其中timeF变量是定义视频抽帧间隔频率，可修改