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• pip installation failure of pyAV with exit status 1181

  11 février 2020, par Kesar Murthy

  I am having trouble installing PyAV through pip. First it required me to download Microsoft Visual C++ Build Tools

  building 'av.buffer' extension
  
  error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": https://visualstudio.microsoft.com/downloads/

  and when I did install this, I get the following error

  LINK : fatal error LNK1181: cannot open input file 'avcodec.lib'
  
      error: command 'C:\\Users\\Kesar\\AppData\\Local\\Programs\\Common\\Microsoft\\Visual C++ for Python\\9.0\\VC\\Bin\\amd64\\link.exe' failed with exit status 1181

  I even tried to build PyAV from source, but the same problem persists. How do I solve this ?

• How to make terminal refer to more recent ffmpeg installation path (currently refers to Anaconda's installation) ? [on hold]

  29 janvier 2019, par John Doe

  I would like to use ffmpeg to convert a WAV audio file to MP3, but ffmpeg doesn’t have a native MP3 encoder. Their documentation says you can use the external libmp3lame encoding library to achieve this, which "requires the presence of the libmp3lame headers and library during configuration" by "explicitly configur[ing] the build with —enable-libmp3lame."

  I tried installing the latest version of ffmpeg to my desktop and followed the configuration instructions to include libmp3lame. However, when I tried it out in my terminal, I got an error saying that ffmpeg could not find the libmp3lame encoder.

  When I enter "which ffmpeg" into my terminal, the path I am given refers to another, older installation of ffmpeg that was included automatically when I installed Anaconda years ago.

  How can I change the path of the installation my terminal refers to so that when I execute ffmpeg commands, it will use the version I more recently configured to include libmp3lame on my desktop and not the older installation included in Anaconda’s directories ?

• Pydub installation and ffmpeg

  6 août 2021, par Lone Lunatic

  I was trying to get raw sound data out of a .mp3 file. Therefor I used the pydub module as stated here. I created a venv for this project and installed all necessary modules. But for some reason, pydub decided to give me an FileNotFoundError :

  



  (venv) Python-IT:LightsDev pythonit$ which python
/Users/pythonit/Documents/Programmieren/Python/LightsDev/venv/bin/python
(venv) Python-IT:LightsDev pythonit$ which pip3
/Users/pythonit/Documents/Programmieren/Python/LightsDev/venv/bin/pip3
(venv) Python-IT:LightsDev pythonit$ pip3 list 
------------- -------
ffmpeg        1.4
pip           18.1
pydub         0.23.0
pyee          5.0.0
python-ffmpeg 1.0.5
setuptools    39.0.1


  



  My exact code looks like that :

  



  from pydub import AudioSegment
sound = AudioSegment.from_mp3('test.mp3')
raw_data = sound._data
print(raw_data)


  



  and I get this error :

  



  FileNotFoundError: [Errno 2] No such file or directory: 'ffprobe': 'ffprobe'


  



  alongside this runtime warning :

  



  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)


  



  I don't know if it is me, but some similar questions stating I should install ffmpeg or python-ffmpeg won't work. I can even import the ffmpeg module but nothing happens. I can work with ffmpeg and load files but using it with pydub won't work.

  



  EDIT : Today I changed to my windows machine and looked at the error in-depth. However I didn't manage to get it working, even with the solution provided in the comments (thank you though). I installed the ffmpeg binary as stated and i was able to get ffmpeg running in the shell, however not with pydub... I have no clue what is going on. I guess my mistake is very obvious and I am just not able to get it. Even not subprocess was able to solve this problem despite the fact, that I am able to use ffmpeg in shell. I even was able to convert the file using ffmpeg in shell...

  



   ffmpeg -i test.mp3 test.wav 
 > Output #0, wav, to 'test.wav':


  



  I think I am close to solve the problem myself anyways, but thank you anyways.