Intro

<video id="intro" autoplay muted playsinline>
  <source src="https://test.kleiner.li/wp-content/uploads/Ringvideo.mp4" type="video/mp4">
</video>

<script>
  document.getElementById('intro').addEventListener('ended', () => {
    window.location.href = "https://deine-seite.de"; // Zur Startseite
  });
</script>