title: Javascript - buffer video from blobs source?
body: <h2>Context:</h2>
  <p>Fiddling with javascript.</p>
  <p>Html5 browser.</p>
  <h2>Question:</h2>
  <p>Is it possible to have, say, two video blobs and buffer their content in a video tag and play them smoothly without concatenating them at first ?</p>
  <p>The underlying is : is it possible to dynamically add data to the video buffer in javascript in the browsers <strong>at any moment</strong> (the video may have already started to play and we still add data from a blob after that)?</p>
  <p>All the solutions seems to need the whole data at the beginning.</p>