Javascript Gera Video do Youtube pela url

<html>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
  <body>
    <form>
      <label>URL do vídeo do YouTube:</label>
      <input type="text" size="60" id="youtubeURL" placeholder="Insira a URL do vídeo do YouTube aqui">
      <button type="button" onclick="embedVideo()">Incorporar</button>
    </form>
    <div id="videoContainer"></div>
    <script>
      function embedVideo() {
        var videoURL = document.getElementById('youtubeURL').value;
        var youtubeID = videoURL.split('v=')[1];
        var ampersandPosition = youtubeID.indexOf('&');
        if(ampersandPosition != -1) {
          youtubeID = youtubeID.substring(0, ampersandPosition);
        }
        var videoEmbed = '<iframe width="560" height="315" src="https://www.youtube.com/embed/' + youtubeID + '" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>';
        document.getElementById('videoContainer').innerHTML = videoEmbed;
      }
    </script>
  </body>
</html>