const fbvid = require('fbvideos');

const video = 'https://www.facebook.com/9gag/videos/10155721204506840/';

fbvid.low(video).then(vid => {
  console.log(vid)
  // => { url: 'https://video.fpat1-1.fna.fbcdn.net/...mp4?934&oe=5972F363' }

});

fbvid.high(video).then(vid => {
  console.log(vid);
  // => { url: 'https://video.fpat1-1.fna.fbcdn.net/...mp4?934&OE=2kf2lf4g' }
});