get youtube video stream url in different qualities and formats

youtube_video_urls

let videoUrls = ytplayer.config.args.url_encoded_fmt_stream_map
  .split(',')
  .map(item => item
    .split('&')
    .reduce((prev, curr) => (curr = curr.split('='),
      Object.assign(prev, {[curr[0]]: decodeURIComponent(curr[1])})
    ), {})
  )
  .reduce((prev, curr) => Object.assign(prev, {
    [curr.quality + ':' + curr.type.split(';')[0]]: curr
  }), {});

console.log(videoUrls);