OSError：[Errno 13] FFMPEG拒绝权限

Question

我刚刚开始使用Python，我正在使用python来读取mp3文件。我试图使用ffmpeg来读取mp3文件，但是，我一直收到拒绝许可的错误。

感谢您是否可以告诉我如何解决此错误！

谢谢！

$ cd '/Users/jingyi/Downloads/' && '/usr/bin/pythonw'  '/Users/jingyi/Downloads/sound detection.py'  && echo Exit status: $? && exit 1
Traceback (most recent call last):
  File "/Users/jingyi/Downloads/sound detection.py", line 14, in <module>
    pipe = sp.Popen(command, stdout = sp.PIPE)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 709, in __init__
    errread, errwrite)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1326, in _execute_child
    raise child_exception

OSError: [Errno 13] Permission denied

---

    FFMPEG_BIN = '/Users/jingyi/Downloads/ffmpeg'
    #INPUT_Sound = '/Users/jingyi/Downloads/Snore.mp3'

    import subprocess as sp

    command = [ FFMPEG_BIN,
            '-i', '/Users/jingyi/Downloads/Snore.mp3',
            '-f', 's16le',
            '-acodec', 'pcm_s16le',
            '-ar', '44100', # ouput will have 44100 Hz
            '-ac', '2', # stereo (set to '1' for mono)
            '-']
    pipe = sp.Popen(command, stdout = sp.PIPE)