upstream-tauri/examples/streaming/index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <style>
      body {
        margin: unset;
        overflow: hidden;
      }
      video {
        width: 100vw;
        height: 100vh;
      }
    </style>
  </head>

  <body>
    <video id="video_source" controls="" autoplay="" name="media">
      <source type="video/mp4" />
    </video>

    <script>
      const { invoke, convertFileSrc } = window.__TAURI__.core
      const video = document.getElementById('video_source')
      const source = document.createElement('source')
      source.type = 'video/mp4'
      source.src = convertFileSrc('streaming_example_test_video.mp4', 'stream')
      video.appendChild(source)
      video.load()
    </script>
  </body>
</html>