title: What is the form input type for posting blob from an HTML Form?
body: <p>I want to include a recorded video (saved as a blob) to a form that will be posted. </p>
  
  <p>Two questions: </p>
  
  <ol>
  <li>What is the input type required to post the blob?</li>
  <li>How do I assign the blob to that input type? </li>
  </ol>
  
  <p>Some of what I've seen suggested using a input type of file. </p>
  
  <p>Example form: </p>
  
  <pre><code>&lt;form method="POST&gt;  
      &lt;input type="text" class="hidden" name="filename"/&gt;
      &lt;input type="&lt;UNKNOWN&gt;" class="hidden" name="filedata"/&gt;
      &lt;input type="submit" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>I'm assuming I'd do something like </p>
  
  <pre><code>$("[name=filename]").val(myBlob)
  </code></pre>