Open File with JSONDecodeError · Issue #450 · jiaaro/pydub

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I used the script below:

from pydub import AudioSegment
song = AudioSegment.from_mp3(r"test2.mp3")

and there is a JSONDecodeError

JSONDecodeError: Expecting value: line 1 column 1 (char 0)

more detail:

---------------------------------------------------------------------------
JSONDecodeError                           Traceback (most recent call last)
<ipython-input-10-87da299a1c3c> in <module>
      1 from pydub import AudioSegment
----> 3 song = AudioSegment.from_mp3(r"test2.mp3")
C:\ProgramData\Anaconda3\lib\site-packages\pydub\audio_segment.py in from_mp3(cls, file, parameters)
    714     @classmethod
    715     def from_mp3(cls, file, parameters=None):
--> 716         return cls.from_file(file, 'mp3', parameters=parameters)
    718     @classmethod
C:\ProgramData\Anaconda3\lib\site-packages\pydub\audio_segment.py in from_file(cls, file, format, codec, parameters, **kwargs)
    663             stdin_data = file.read()
--> 665         info = mediainfo_json(orig_file)
    666         if info:
    667             audio_streams = [x for x in info['streams']
C:\ProgramData\Anaconda3\lib\site-packages\pydub\utils.py in mediainfo_json(filepath)
    266     stderr = stderr.decode("utf-8", 'ignore')
--> 268     info = json.loads(output)
    270     if not info:
C:\ProgramData\Anaconda3\lib\json\__init__.py in loads(s, encoding, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
    346             parse_int is None and parse_float is None and
    347             parse_constant is None and object_pairs_hook is None and not kw):
--> 348         return _default_decoder.decode(s)
    349     if cls is None:
    350         cls = JSONDecoder
C:\ProgramData\Anaconda3\lib\json\decoder.py in decode(self, s, _w)
    336         """
--> 337         obj, end = self.raw_decode(s, idx=_w(s, 0).end())
    338         end = _w(s, end).end()
    339         if end != len(s):
C:\ProgramData\Anaconda3\lib\json\decoder.py in raw_decode(self, s, idx)
    353             obj, end = self.scan_once(s, idx)
    354         except StopIteration as err:
--> 355             raise JSONDecodeError("Expecting value", s, err.value) from None
    356         return obj, end
Your System configuration
Python version: 3.7.4
Pydub version: 0.23.1
ffmpeg or avlib?: ffmpeg
ffmpeg/avlib version: 1.4
          try to run ffmpeg in terminal

mine issue was
dyld: Library not loaded: /usr/local/opt/libffi/lib/libffi.6.dylib 
Running brew doctor I saw that fontconfig wasn't linked, after linking it everything was working
          I also am having a lot of problems with this.  I'm not able to run FFmpeg in the terminal on a mac because I can't find it.  I have downloaded it with brew, but after that I don't know where it goes.  When I look for it with the spotlight all I get is some ffmpeg in python folders. I have also tried brew doctor and then linking some things but that did not work.
          I got it working.  In short, it is an ffmpeg problem not a pydub problem.  I had to reinstall ffmpeg not once but twice and it took a lot of work to get it to work and I've forgotten how I did it.  In any case, if you can get this line in Terminal to work ffmpeg -i input.mp3 output.avi then pydub should work.
          Solved for MacOS using Anaconda3 by downloading ffmpeg and and ffprobe binaries from https://ffbinaries.com/downloads and putting them in my "usr/anaconda3/bin" folder (this directory primarily has executable files). I think the issue occurred because even though I had uninstalled and reinstalled pydub and ffmpeg several times, it was still running an old version of the executables that I had installed from a year ago!