How do I download video from blob link on Windows 11 ?

Since a blob is already a sign that content has been downloaded, there's no need to re-download it. Unlike text data, blobs are binary data, which means they take up significantly less space. Additionally, since the data has already been downloaded, the browser doesn't need to send multiple requests to the originating server to render the content. This reduces the number of requests and improves overall performance.

You can use this JS code to download video from blog link url:

function onChange() {
  var file = document.getElementById('fileItem').files[0];
  var vid = document.getElementsByTagName('video')[0];
  var url = URL.createObjectURL(file);

  document.getElementById('blob').innerHTML = "Blob URL is:<br>".concat(url); 
  document.getElementById('fileItem').type = "hidden";

  vid.src=url;
  vid.load();
  vid.onloadeddata = function() {
    vid.play();
  }
}