<html>
  <head>
    <link rel="stylesheet" href="style.css">
    <script src="/assets/ffmpeg/package/dist/umd/ffmpeg.js"></script>
    <script src="/assets/util/package/dist/umd/index.js"></script>
  </head>
  <body>
    <h3>Upload a video to transcode to mp4 (x264) and play!</h3>
    <video id="output-video" controls></video><br/>
    <input type="file" id="uploader">
    <p id="message"></p>
    <script>
      const { fetchFile } = FFmpegUtil;
      const { FFmpeg } = FFmpegWASM;
      let ffmpeg = null;
