Python使用ffmpy将amr格式的音频转化为mp3格式的例子

pip install ffmpy

sudo add-apt-repository ppa:kirillshkrogalev/ffmpeg-next
 
sudo apt-get update
 
sudo apt-get install ffmpeg

ffmpeg -versionx

@classmethod
def transformat_voice(cls, amr_voice_b):
  from_fn = 'from.amr'
  to_fn = 'target.mp3'
  mp3_file = BytesIO()
  with open(from_fn, 'wb') as f_from:
    f_from.write(amr_voice_b.getvalue())
  ff = ffmpy.FFmpeg(inputs={from_fn: None}, outputs={to_fn: None})
  ff.run()
  with open(to_fn, 'rb') as f_to:
    f_to.seek(0)
    mp3_file.write(f_to.read())
  os.remove(from_fn)
  os.remove(to_fn)
  mp3_file.seek(0)
  return mp3_file