// ==UserScript==
// @name netflix-speed
// @version 0.1
// @include https://www.netflix.com/watch/*
// ==/UserScript==

var speed_control = document.createElement('select');
speed_control.style.cssText = `
border:none;
-moz-appearance: none;
-webkit-appearance: none;
appearance: none;
cursor: pointer;
background: none;
`;
speed_control.onchange = function() {
  document.getElementsByClassName('VideoContainer')[0].getElementsByTagName('video')[0].playbackRate = this.value;
};
speed_control.innerHTML = `<option value=0.5>0.5</option>
<option value=0.75>0.75</option>
<option value=1.0 selected="selected">Normal</option>
<option value=1.25>1.25</option>
<option value=1.5>1.5</option>
<option value=1.75>1.75</option>
<option value=2.0>2.0</option>`;
function append(){
  if(!document.getElementsByClassName('PlayerControlsNeo__controls-group').length) {
    setTimeout(append, 200);
  } else {
    console.log(document.getElementsByClassName('PlayerControlsNeo__controls-group')[0]);
    document.getElementsByClassName('PlayerControlsNeo__controls-group')[0].appendChild(speed_control);
  }
}
append();