title: Cannot find ffprobe?
body: <p>I am trying to generate video thumbnail in my node project for that I tried 
  thumbsupply and video-thumbnail npm both returns the same error called <code>not found: ffprobe</code></p>
  
  <pre><code>const thumbsupply = require('thumbsupply'); 
  const ffprobe = require('@ffprobe-installer/ffprobe');
  let aa =   thumbsupply.generateThumbnail('videoplayback.mp4', {
                                              size: thumbsupply.ThumbSize.MEDIUM, // or ThumbSize.LARGE
                                              timestamp: "10%", // or `30` for 30 seconds
                                              forceCreate: true,
                                              cacheDir: "~/myapp/cache",
                                              mimetype: "video/mp4"
                                             })
                                       console.log(aa);
  </code></pre>