Python使用playsound播放音频报错：MCI无法识别指定设备

问题场景 #

使用gTTS将文本转换为MP3文件后，调用playsound库播放时触发Error 263，提示「指定设备未打开或不被MCI识别」。

实现代码 #

import playsound # to play an audio file
import random
import os
from gtts import gTTS # google text to speech

# get string and make a audio file to be played
def speak(audio_string): 
    tts = gTTS(text=audio_string, lang='en-in') # text to speech(voice)
    r  = random.randint(1,20000000)  # random name
    audio_file = 'audio-' + str(r) + '.mp3' # audio file name
    tts.save(audio_file) # save as mp3
    playsound.playsound(audio_file) # play the audio file

    os.remove(audio_file) # remove audio file

speak("how can I help you")

报错信息 #

Python 3.10.5 (tags/v3.10.5:f377153, Jun  6 2022, 16:14:13) [MSC v.1929 64 bit (AMD64)] on win32

    Error 263 for command:
        open audio-14004851.mp3
    The specified device is not open or is not recognized by MCI.

    Error 263 for command:
        close audio-14004851.mp3
    The specified device is not open or is not recognized by MCI.
Failed to close the file: audio-14004851.mp3
Traceback (most recent call last):
  File "C:/Users/Sanctuary/Desktop/VAVO/test.py", line 19, in <module>
    speak("how can I help you")
  File "C:/Users/Sanctuary/Desktop/VAVO/test.py", line 14, in speak
    playsound.playsound(audio_file) # play the audio file
  File "C:\Users\Sanctuary\AppData\Local\Programs\Python\Python310\lib\site-packages\playsound.py", line 72, in _playsoundWin
    winCommand(u'open {}'.format(sound))
  File "C:\Users\Sanctuary\AppData\Local\Programs\Python\Python310\lib\site-packages\playsound.py", line 64, in winCommand
    raise PlaysoundException(exceptionMessage)
playsound.PlaysoundException: 
    Error 263 for command:
        open audio-14004851.mp3
    The specified device is not open or is not recognized by MCI.

解决方案 #

1. 降级playsound版本 #

新版playsound（1.3.0+）在Windows系统上存在MCI兼容性问题，降级到稳定旧版即可解决：

pip uninstall playsound
pip install playsound==1.2.2

2. 使用音频文件绝对路径 #

相对路径可能导致MCI无法定位文件，修改代码使用绝对路径播放：

# 在tts.save(audio_file)之后添加
audio_file = os.path.abspath(audio_file)
playsound.playsound(audio_file)

3. 替换为其他音频播放库 #

如果playsound问题持续，改用pygame或simpleaudio替代：

• 示例（pygame）：
  先安装pygame：pip install pygame
  修改speak函数的播放逻辑：

  import pygame
  pygame.mixer.init()
  pygame.mixer.music.load(audio_file)
  pygame.mixer.music.play()
  while pygame.mixer.music.get_busy():
      pygame.time.Clock().tick(10)
  

4. 检查系统音频设备 #

• 确认系统默认音频设备未被禁用，可在「声音设置」中切换默认设备后重试
• 重启Windows音频服务：按下Win+R输入services.msc，找到「Windows Audio」服务重启

内容的提问来源于stack exchange，提问作者Abhijeet