# coding=gbk
import sys
import os

print(sys.getdefaultencoding())

for root,dirs,files in os.walk('.'):
    for names in files:
        if(names.endswith(".mp4")):
            filename=names[0:-4]
            print(filename)
            cmd='ffmpeg -ss 00:00:05.000 -i "'+filename+'.mp4" -vframes 1 "cover/'+filename+'.png" -y'
            print(cmd)
            os.system(cmd)