Discord机器人FFmpegPCMAudio报错：找不到程序及_process属性缺失

开发Python Discord机器人时，执行join命令后机器人能成功连接语音频道，但报错找不到指定路径的ffmpeg.exe，后续还触发'FFmpegPCMAudio'对象没有'_process'属性的错误。已尝试重装FFmpeg、检查语法，问题仍未解决。

相关代码 #

@bot.command()
async def join(ctx):
    if ctx.author.voice is None:
        await ctx.reply("You are not connected to a voice channel.")
        return
    channel = ctx.author.voice.channel
    voice = await channel.connect()
    voice.play(discord.FFmpegPCMAudio(executable="C:/Path_Program/ffmpeg.exe", source=r"example.mp3"))

报错信息 #

Ignoring exception in command join:
Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\ext\commands\core.py", line 178, in wrapped
    ret = await coro(*args, **kwargs)
  File "C:\Users\user\Desktop\HoDeC-bot\bot.py", line 64, in join
    voice.play(discord.FFmpegPCMAudio(executable="C:/Path_Program/ffmpeg.exe", source=r"example.mp3"))
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 312, in __init__
    super().__init__(source, executable=executable, args=args, **subprocess_kwargs)
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 165, in __init__
    self._process: subprocess.Popen = self._spawn_process(args, **kwargs)
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 185, in _spawn_process
    raise ClientException(f"{executable} was not found.") from None
discord.errors.ClientException: C:/Path_Program/ffmpeg.exe was not found.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\ext\commands\bot.py", line 347, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\ext\commands\core.py", line 950, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\ext\commands\core.py", line 187, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: ClientException: C:/Path_Program/ffmpeg.exe was not found.
Exception ignored in: <function AudioSource.__del__ at 0x000001D17D222B00>
Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 115, in __del__
    self.cleanup()
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 245, in cleanup
    self._kill_process()
  File "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 194, in _kill_process
    proc = self._process
AttributeError: 'FFmpegPCMAudio' object has no attribute '_process'

核心问题说明 #

C:/Path_Program/ffmpeg.exe was not found是根源错误，_process属性缺失是FFmpeg初始化失败后，对象清理时触发的连锁问题，解决前者后后者会自动消失。

步骤1：确认FFmpeg路径绝对正确 #

• 打开文件资源管理器，找到FFmpeg安装文件夹的bin目录，定位ffmpeg.exe
• 右键ffmpeg.exe→属性→安全→复制完整对象名称（路径可用/或双反斜杠\\，比如C:\\Program Files\\ffmpeg\\bin\\ffmpeg.exe）
• 替换代码中executable参数的路径值，确保完全匹配

步骤2：将FFmpeg加入系统环境变量（推荐） #

• 右键「此电脑」→属性→高级系统设置→环境变量
• 在系统变量的Path中添加FFmpeg的bin目录路径（如C:\Program Files\ffmpeg\bin）
• 重启Python编辑器/终端，之后代码可直接写executable="ffmpeg.exe"，甚至省略该参数（discord.py会自动查找系统路径中的FFmpeg）

步骤3：验证FFmpeg可用性 #

• 打开CMD，输入ffmpeg -version，能输出版本信息说明路径配置正确；若提示「不是内部或外部命令」，则环境变量未配置到位或路径错误

步骤4：检查音频文件路径 #

• 确保example.mp3与机器人脚本在同一目录，或使用完整绝对路径（如r"C:\Users\user\Desktop\HoDeC-bot\example.mp3"）

修正后示例代码 #

@bot.command()
async def join(ctx):
    if ctx.author.voice is None:
        await ctx.reply("你未连接到语音频道。")
        return
    channel = ctx.author.voice.channel
    voice = await channel.connect()
    # FFmpeg已加入环境变量时可直接省略executable参数
    voice.play(discord.FFmpegPCMAudio(source=r"example.mp3"))

内容的提问来源于stack exchange，提问作者GigoChad