// Mouse Wheel Event Scrubs <video> tags
// usage: scrolling with a mouse on <video> tags scrubs the video
Array.prototype.slice.call(document.querySelectorAll('video'))
  .forEach(function(tag) {
    return tag.addEventListener(
      'wheel',
      function(event) {
        var tuning = 7 // fine tune this value between 3-7 to change sensitivity
        return event.target.currentTime =
          event.target.currentTime + ((event.deltaX * -1) + event.deltaY) / tuning
      },
      {
        passive: true
      }
    )
  })