title: Installing ffmpeg for Jupyter Notebook
body: <p>I want to use ffmpeg to download a video from Youtube to mp3</p>
  <p>The code is:</p>
  <pre><code>from __future__ import unicode_literals
  import youtube_dl
  
  ydl_opts = {'format': 'bestaudio/best',
      'postprocessors': [{
          'key': 'FFmpegExtractAudio',
          'preferredcodec': 'mp3',
          'preferredquality': '192',
      }],
  }
  
  with youtube_dl.YoutubeDL(ydl_opts) as ydl:
      ydl.download(['the_url'])
  </code></pre>
  <p>But obviously I get the error: ffprobe/avprobe and ffmpeg/avconv not found. Please install one.</p>
  <p>I installed ffmpeg but my question is do I need to import something now or put path were I saved the .exe</p>