废话不说，直接上代码

#遍历所有mp4文件名->文件名改为字母形式->fffmpeg批量提取音频、切割音频->改回中文名

import os

import subprocess

current = os.getcwd()

dirs = os.listdir(current)

for i in dirs:

if os.path.splitext(i)[1] == ".mp4":

#bname = str(os.path.splitext(i)[0].encode('utf-8')).replace('\\','%').replace(' ','_')

os.rename(i,'temp.mp4')

getmp3 = 'ffmpeg -i temp.mp4 -f mp3 -vn temp.mp3'

cutmp3 = 'ffmpeg -i temp.mp3 -ss 00:00:15 -acodec copy tempcut.mp3'

returnget = subprocess.call(getmp3,shell = True)

returncut = subprocess.call(cutmp3,shell = True)

os.remove('temp.mp3')

os.rename('tempcut.mp3',os.path.splitext(i)[0] + '.mp3')

os.rename('temp.mp4',i)

print(returnget,returncut)