SOURCE

canvas = document.getElementById('canvas');
editor = new Editor(canvas);

videoNode1 = editor.video("http://sf1-ttcdn-tos.pstatp.com/obj/ttfe/video_editor/example2.mp4");
videoNode2 = editor.video("http://sf1-ttcdn-tos.pstatp.com/obj/ttfe/video_editor/alpha2.webm");

function setVideoTimeline() {
  videoNode1.timelineStart(0);
  videoNode1.timelineStop(20);
  videoNode2.timelineStart(2);
  videoNode2.timelineStop(12);
  editor.currentTime = 0;
}  

videoNode1.connect(editor.output);
videoNode2.connect(editor.output);  
setVideoTimeline();

playButton.onclick = editor.play.bind(editor);
pauseButton.onclick = editor.pause.bind(editor);

InitVisualisations(editor, 'timeline-canvas', 'current')

<canvas width="640" height="360" id="canvas"></canvas>
    <p>
      <button id="playButton">play</button>
      <button id="pauseButton">pause</button>
    </p>
    <p id="current">
    
    </p>
    <p>
        <canvas id="timeline-canvas" width="640", height="20"></canvas>
    </p>
    <p id="myVideo"></p>

html {
    font-family: monospace;
    color: #333;
    /* background-color: black; */
  }
  #current {
    font-size: 12px;
  }
  #canvas {
    width: 640px;
    height: 360px;
  }
  #canvas2 {
    width: 640px;
    height: 360px;
    position: absolute;
    left: 0px;
    top: 0px;
    z-index: 10;
  }
  #container {
    position: relative;
  }

  button {
    line-height: 1.499;
      position: relative;
      display: inline-block;
      font-weight: 400;
      white-space: nowrap;
      text-align: center;
      background-image: none;
      border: 1px solid transparent;
      cursor: pointer;
      user-select: none;
      height: 32px;
      padding: 0 15px;
      font-size: 14px;
      border-radius: 4px;
      color: rgba(0,0,0,0.65);
      background-color: #fff;
      border-color: #d9d9d9;
      outline: 0;
      transition: all .3s cubic-bezier(.645, .045, .355, 1);
  }

  button:hover {
    color: #40a9ff;
    background-color: #fff;
    border-color: #40a9ff;
  }

  button:active {
    color: #096dd9;
    background-color: #fff;
    border-color: #096dd9;
  }

  input {
    -webkit-appearance: none;
    background-color: #fff;
    background-image: none;
    border-radius: 4px;
    border: 1px solid #dcdfe6;
    box-sizing: border-box;
    color: #606266;
    display: inline-block;
    font-size: inherit;
    height: 32px;
    line-height: 32px;
    outline: none;
    padding: 0 8px;
    transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
    width: 50px;
}