Visualizza wikitesto di VideoConference ← VideoConference

[[Category:Research]]
=Quality Adaptation for Video Conference Applications=

=='''BEST''' (Bandwidth Estimation) application versus Skype video over a time-varying variable bandwidth, RTT=100ms.==
<p style="font-size:1.5em;">Techical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC</p>
<absHTML>
<div id="container"><a href="http://www.macromedia.com/go/getflashplayer">Get the Flash Player</a> to see this player.</div>
<script type="text/javascript" src="/video/mediaplayer/swfobject.js"></script>
<script type="text/javascript">
var s1 = new SWFObject("/video/mediaplayer/player.swf","ply","640","320","9","#FFFFFF");
s1.addParam("allowfullscreen","true");
s1.addParam("allowscriptaccess","always");
s1.addVariable("plugins", "googlytics-1");
s1.addParam("flashvars","&file=/video/mixed.flv&image=/video/mixed.jpg&autostart=false&start=0&duration=240");
s1.write("container");
var player = document.getElementById('ply');
</script>
<img src="/video/mixed_bands.png" alt="Bands" style="float: left;" />
<ul>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 55)">Go to 60s (when bandwidth drops  from 800 kbps to 160 kbps)</a></li>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 115)">Go to 120s (when bandwidth goes up from 160 kbps to 800 kbps)</a></li>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 175)">Go to 180s (when bandwidth goes up from 800 kbps to 2000 kbps)</a></li>
</ul>
</absHTML>
<br class="clearall" />
Skype&reg; is a registered trademark of Skype Ltd.

=='''BEST''' (Bandwidth Estimation) application versus Google videochat over a time-varying variable bandwidth, RTT=100ms.==
<p style="font-size:1.5em;">Techical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC</p>
<absHTML>
<div id="container2"><a href="http://www.macromedia.com/go/getflashplayer">Get the Flash Player</a> to see this player.</div>
<script type="text/javascript" src="/video/mediaplayer/swfobject.js"></script>
<script type="text/javascript">
var s1 = new SWFObject("/video/mediaplayer/player.swf","ply2","640","320","9","#FFFFFF");
s1.addParam("allowfullscreen","true");
s1.addParam("allowscriptaccess","always");
s1.addVariable("plugins", "googlytics-1");
s1.addParam("flashvars","&file=/video_demo/best_vs_gvideo.flv&image=/video_demo/best_vs_gvideo.jpg&autostart=false&start=0&duration=240");
s1.write("container2");
var player2 = document.getElementById('ply2');
</script>
<img src="/video/mixed_bands.png" alt="Bands" style="float: left;" />
<ul>
<li><a href="#" onclick="javascript:player2.sendEvent('seek', 55)">Go to 60s (when bandwidth drops  from 800 kbps to 160 kbps)</a></li>
<li><a href="#" onclick="javascript:player2.sendEvent('seek', 115)">Go to 120s (when bandwidth goes up from 160 kbps to 800 kbps)</a></li>
<li><a href="#" onclick="javascript:player2.sendEvent('seek', 175)">Go to 180s (when bandwidth goes up from 800 kbps to 2000 kbps)</a></li>
</ul>
</absHTML>
<br class="clearall" />
Google&reg; is a registered trademark.