HTML 

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link
      rel="icon"
      href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>📺</text></svg>"
    />
    <title>How to customize media notifications</title>
  </head>
  <body>
    <h1>How to customize media notifications</h1>
    <video controls playsinline src="https://storage.googleapis.com/media-session/caminandes/short.mp4"></video>
    <p>Credits: Media files are © copyright Blender Foundation | <a href="https://www.blender.org">www.blender.org</a>.</p>
  </body>
</html>

CSS 


        :root {
  color-scheme: dark light;
}
html {
  box-sizing: border-box;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}
body {
  margin: 1rem;
  font-family: system-ui, sans-serif;
}
video {
  display: block;
  margin-top: 10px;
  max-width: 100%;
}

JS 


        const video = document.querySelector("video");

navigator.mediaSession.metadata = new MediaMetadata({
  title: "Caminandes 2: Gran Dillama - Blender Animated Short",
  artist: "Blender Foundation",
  artwork: [
    { src: "https://storage.googleapis.com/media-session/caminandes/artwork-96.png",  sizes: "96x96" },
    { src: "https://storage.googleapis.com/media-session/caminandes/artwork-128.png", sizes: "128x128" },
    { src: "https://storage.googleapis.com/media-session/caminandes/artwork-256.png", sizes: "256x256" },
    { src: "https://storage.googleapis.com/media-session/caminandes/artwork-512.png", sizes: "512x512" },
  ],
});

navigator.mediaSession.setActionHandler("play", async () => {
  // Resume playback
  try {
    await video.play();
  } catch (err) {
    console.error(err.name, err.message);
  }
});

navigator.mediaSession.setActionHandler("pause", () => {
  // Pause active playback
  video.pause();
});

video.addEventListener("play", () => {
  navigator.mediaSession.playbackState = "playing";
});

video.addEventListener("pause", () => {
  navigator.mediaSession.playbackState = "paused";
});