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+ | [[Category:Research]] | ||
+ | =Quality Adaptation for Video Conference Applications= | ||
+ | |||
+ | ==BEST application versus Skype Video== | ||
+ | <p style="font-size:1.5em;">'''BEST''' (Bandwidth Estimation) application versus Skype video over a time-varying variable bandwidth, RTT=100ms. | ||
+ | Technical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC</p> | ||
<absHTML> | <absHTML> | ||
− | + | <a name="skype"></a> | |
<div id="container"><a href="http://www.macromedia.com/go/getflashplayer">Get the Flash Player</a> to see this player.</div> | <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" src="/video/mediaplayer/swfobject.js"></script> | ||
<script type="text/javascript"> | <script type="text/javascript"> | ||
− | var s1 = new SWFObject("player.swf","ply","640","320","9","#FFFFFF"); | + | var s1 = new SWFObject("/video/mediaplayer/player.swf","ply","640","320","9","#FFFFFF"); |
s1.addParam("allowfullscreen","true"); | s1.addParam("allowfullscreen","true"); | ||
s1.addParam("allowscriptaccess","always"); | s1.addParam("allowscriptaccess","always"); | ||
− | s1.addParam("flashvars","&file= | + | 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"); | s1.write("container"); | ||
var player = document.getElementById('ply'); | var player = document.getElementById('ply'); | ||
</script> | </script> | ||
+ | <img src="/video/mixed_bands.png" alt="Bands" style="float: left;" /> | ||
+ | <ul> | ||
+ | <li><a href="#skype" onclick="javascript:player.sendEvent('seek', 55)">Go to 60s (when bandwidth drops from 800 kbps to 160 kbps)</a></li> | ||
+ | <li><a href="#skype" onclick="javascript:player.sendEvent('seek', 115)">Go to 120s (when bandwidth goes up from 160 kbps to 800 kbps)</a></li> | ||
+ | <li><a href="#skype" 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® is a registered trademark of Skype Ltd. | ||
− | <a href="#" onclick="javascript: | + | ==BEST application versus Google Videochat== |
− | <a href="#" onclick="javascript: | + | <p style="font-size:1.5em;">'''BEST''' (Bandwidth Estimation) application versus Google VideoChat over a time-varying variable bandwidth, RTT=100ms. |
− | <a href="#" onclick="javascript: | + | Technical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC</p> |
− | + | <absHTML> | |
+ | <a name="google"></a> | ||
+ | <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="#google" onclick="javascript:player2.sendEvent('seek', 55)">Go to 60s (when bandwidth drops from 800 kbps to 160 kbps)</a></li> | ||
+ | <li><a href="#google" onclick="javascript:player2.sendEvent('seek', 115)">Go to 120s (when bandwidth goes up from 160 kbps to 800 kbps)</a></li> | ||
+ | <li><a href="#google" onclick="javascript:player2.sendEvent('seek', 175)">Go to 180s (when bandwidth goes up from 800 kbps to 2000 kbps)</a></li> | ||
+ | </ul> | ||
</absHTML> | </absHTML> | ||
+ | <br class="clearall" /> | ||
+ | Google® is a registered trademark. |
BEST (Bandwidth Estimation) application versus Skype video over a time-varying variable bandwidth, RTT=100ms. Technical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC
Skype® is a registered trademark of Skype Ltd.
BEST (Bandwidth Estimation) application versus Google VideoChat over a time-varying variable bandwidth, RTT=100ms. Technical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC
Google® is a registered trademark.