MacOS+Python3.10播放音频文件报错求助

问题背景 #

在MacOS系统、Python3.10环境下尝试编写代码播放音频文件，先后使用playsound和pydub库均报错，已尝试部分方案未解决。

第一次尝试：使用playsound库 #

代码：

from playsound import playsound
playsound('/Users/cairo/Desktop/i wish.mp3')

报错信息：

/Users/cairo/PycharmProjects/pythonProject/venv/bin/python /Users/cairo/PycharmProjects/pythonProject/main.py 
playsound is relying on a python 2 subprocess. Please use `pip3 install PyObjC` if you want playsound to run more efficiently.
Traceback (most recent call last):
  File "/Users/cairo/PycharmProjects/pythonProject/main.py", line 3, in <module>
    playsound(r'/Users/cairo/Desktop/beep sound 2')
  File "/Users/cairo/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/playsound.py", line 244, in <lambda>
    playsound = lambda sound, block = True: _playsoundAnotherPython('/System/Library/Frameworks/Python.framework/Versions/2.7/bin/python', sound, block, macOS = True)
  File "/Users/cairo/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/playsound.py", line 223, in _playsoundAnotherPython
    raise PlaysoundException('Cannot find a sound with filename: ' + sound)
playsound.PlaysoundException: Cannot find a sound with filename: /Users/cairo/Desktop/beep sound 2

Process finished with exit code 1

已执行pip3 install PyObjC，但仍报错。

第二次尝试：使用pydub库 #

代码：

from pydub import AudioSegment
from pydub.playback import play

song = AudioSegment.from_wav("/Users/cairo/Desktop/i wish.mp3")
play(song)

报错信息：

/Users/cairo/PycharmProjects/beepsound/venv/lib/python3.10/site-packages/pydub/utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
  warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)
/Users/cairo/PycharmProjects/beepsound/venv/lib/python3.10/site-packages/pydub/utils.py:198: RuntimeWarning: Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work
  warn("Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning)
Traceback (most recent call last):
  File "/Users/cairo/PycharmProjects/beepsound/main.py", line 4, in <module>
    song = AudioSegment.from_wav("/Users/cairo/Desktop/i wish.mp3")
  File "/Users/cairo/PycharmProjects/beepsound/venv/lib/python3.10/site-packages/pydub/audio_segment.py", line 808, in from_wav
    return cls.from_file(file, 'wav', parameters=parameters)
  File "/Users/cairo/PycharmProjects/beepsound/venv/lib/python3.10/site-packages/pydub/audio_segment.py", line 728, in from_file
    info = mediainfo_json(orig_file, read_ahead_limit=read_ahead_limit)
  File "/Users/cairo/PycharmProjects/beepsound/venv/lib/python3.10/site-packages/pydub/utils.py", line 274, in mediainfo_json
    res = Popen(command, stdin=stdin_parameter, stdout=PIPE, stderr=PIPE)
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/subprocess.py", line 971, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/subprocess.py", line 1847, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'ffprobe'

Process finished with exit code 1

问题分析与解决步骤 #

针对playsound的问题 #

• 文件路径不匹配：报错提示找不到的文件是/Users/cairo/Desktop/beep sound 2，但代码里写的是/Users/cairo/Desktop/i wish.mp3，需确认代码中的文件路径和实际文件完全一致，包括文件名、后缀名。
• 版本兼容问题：老版本playsound在Python3.10下依赖Python2子进程，即使安装PyObjC也可能存在兼容问题。建议卸载现有版本，安装适配Python3的稳定版本：

  pip uninstall playsound
  pip install playsound==1.2.2
  

针对pydub的问题 #

• 格式调用错误：用AudioSegment.from_wav()读取MP3文件是错误的，应使用对应格式的方法AudioSegment.from_mp3()，或通用方法AudioSegment.from_file()自动识别格式。
• 缺少依赖工具：pydub依赖ffmpeg（包含ffprobe），需先通过Homebrew安装：

  brew install ffmpeg
  

  修改后的运行代码：

  from pydub import AudioSegment
  from pydub.playback import play
  
  song = AudioSegment.from_mp3("/Users/cairo/Desktop/i wish.mp3")
  play(song)
  

备选方案：使用pygame库 #

如果上述库仍有兼容问题，可尝试兼容性更好的pygame：

1. 安装库：

   pip install pygame
   

2. 示例代码：

   import pygame
   
   pygame.mixer.init()
   pygame.mixer.music.load('/Users/cairo/Desktop/i wish.mp3')
   pygame.mixer.music.play()
   while pygame.mixer.music.get_busy():
       pygame.time.Clock().tick(10)
   

内容的提问来源于stack exchange，提问作者Oughtly