Visualizza wikitesto di VideoConferenceSD ← VideoConferenceSD

[[Category:Research]]
=Quality Adaptation for 640x480 pixels Video (Conference) over IP  =

==BEST with "Angels & Demons" video sequence==
<p style="font-size:1.5em;"> '''BEST''' (Bandwidth Estimation) video application  over a time-varying variable bandwidth, RTT=100ms. Video resolution: 640x480, 25 FPS.
<br>
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","560","9","#FFFFFF");
s1.addParam("allowfullscreen","true");
s1.addParam("allowscriptaccess","always");
s1.addVariable("plugins", "googlytics-1");
s1.addParam("flashvars","&file=/video/best_hd.flv&image=/video/best_hd.jpg&autostart=false&start=0&duration=420");
s1.write("container");
var player = document.getElementById('ply');
</script>
<img src="/video/bands.jpg" alt="Bands" style="float: left;" />
<ul>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 55)">Go to 60s (when bandwidth drops  from 1000 kbps to 384 kbps)</a></li>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 115)">Go to 120s (when bandwidth drops  from 384 kbps to 240 kbps)</a></li>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 175)">Go to 180s (when bandwidth goes up from 240 kbps to 384 kbps)</a></li>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 235)">Go to 240s (when bandwidth goes up from 384 kbps to 1000 kbps)</a></li>
<li><a href="#" onclick="javascript:player.sendEvent('seek', 295)">Go to 300s (when bandwidth goes up from 1000 kbps to 2000 kbps)</a></li>
</ul>
</absHTML>
<br class="clearall" />

==BEST with "Sunflower" video sequence==
<p name="sunflower" style="font-size:1.5em;"> '''BEST''' (Bandwidth Estimation) video application  over a time-varying variable bandwidth, RTT=100ms. Video taken from [http://media.xiph.org/ldv/pub/test_sequences/1080p/ media.xiph.org], resolution rescaled to 640x480, 25 FPS.
<br>
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","560","9","#FFFFFF");
s1.addParam("allowfullscreen","true");
s1.addParam("allowscriptaccess","always");
s1.addVariable("plugins", "googlytics-1");
s1.addParam("flashvars","&file=/video/best_sunflower_sd.flv&image=/video/best_sunflower_sd.jpg&autostart=false&start=0&duration=420");
s1.write("container2");
var player2 = document.getElementById('ply2');
</script>
<img src="/video/bands.jpg" alt="Bands" style="float: left;" />
<ul>
<li><a href="#sunflower" onclick="javascript:player2.sendEvent('seek', 55)">Go to 60s (when bandwidth drops  from 1000 kbps to 384 kbps)</a></li>
<li><a href="#sunflower" onclick="javascript:player2.sendEvent('seek', 115)">Go to 120s (when bandwidth drops  from 384 kbps to 240 kbps)</a></li>
<li><a href="#sunflower" onclick="javascript:player2.sendEvent('seek', 175)">Go to 180s (when bandwidth goes up from 240 kbps to 384 kbps)</a></li>
<li><a href="#sunflower" onclick="javascript:player2.sendEvent('seek', 235)">Go to 240s (when bandwidth goes up from 384 kbps to 1000 kbps)</a></li>
<li><a href="#sunflower" onclick="javascript:player2.sendEvent('seek', 295)">Go to 300s (when bandwidth goes up from 1000 kbps to 2000 kbps)</a></li>
</ul>
</absHTML>
<br class="clearall" />