修改下面python代码为自定义输入输出目录import subprocessinput_file = 1mp4output_file = outputmp4command = ffmpeg -i input_file -empty_hdlr_name 1 -metadatasv0 language=jpn -metadatasa0 language=jpn -c copy -

import subprocess

input_dir = input("请输入输入文件目录：") output_dir = input("请输入输出文件目录：")

input_file = input_dir + '/' + '1.mp4' output_file = output_dir + '/' + 'output.mp4'

command = ['ffmpeg', '-i', input_file, '-empty_hdlr_name', '1', '-metadata:s:v:0', 'language=jpn', '-metadata:s:a:0', 'language=jpn', '-c', 'copy', '-disposition:v:1', 'attached_pic', output_file]

subprocess.run(command)