This seems to work by periodically grabbing a data file like <a href="http://www.dsny.com/g2/data/arizona/13m.1" rel="nofollow">http://www.dsny.com/g2/data/arizona/13m.1</a>, and then the javascript appears to extract base64 encoded .jpgs out of that which it plays back to make the video?<p>What's interesting is that each of the jpg's appear to have big black portions, so it's obviously doing a sort of overlay/compression type thing and stitching complete images back together.<p>Anyone got any clues on the audio part?