如何以编程方式将mp3转换为itunes-playable aac/m4a文件？

pip install pydub
pip install ffmpeg-python

from pydub import AudioSegment
from pydub.utils import which
import ffmpeg

# 设置ffmpeg路径
ffmpeg_path = which("ffmpeg")
ffmpeg.set_binary(ffmpeg_path)

# 加载mp3文件
mp3_file = "input.mp3"
audio = AudioSegment.from_mp3(mp3_file)

# 将mp3转换为aac/m4a文件
aac_file = "output.m4a"
audio.export(aac_file, format="m4a")