我在哪里可以找到youtube xml的xml架构？
<?xml version='1.0' encoding='UTF-8'?>
<feed xmlns='http://www.w3.org/2005/Atom'
xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/'
xmlns:gml='http://www.opengis.net/gml' xmlns:georss='http://www.georss.org/georss'
xmlns:media='http://search.yahoo.com/mrss/'
xmlns:yt='http://gdata.youtube.com/schemas/2007'
xmlns:gd='http://schemas.google.com/g/2005'>
<id>http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed</id>
<updated>2008-03-06T14:43:27.000-08:00</updated>
<category scheme='http://schemas.google.com/g/2005#kind'
term='http://gdata.youtube.com/schemas/2007#video'/>
<title type='text'>Most Viewed</title>
<logo>http://www.youtube.com/img/pic_youtubelogo_123x63.gif</logo>
<link rel='alternate' type='text/html' href='http://www.youtube.com/browse?s=mp'/>
<link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml'
href='http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed'/>
<link rel='self' type='application/atom+xml'
href='http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed
?start-index=1&max-results=5'/>
<link rel='next' type='application/atom+xml'
href='http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed
?start-index=6&max-results=5'/>
<author>
<name>YouTube</name>
<uri>http://www.youtube.com/</uri>
</author>
<generator version='beta' uri='http://gdata.youtube.com/'>
YouTube data API</generator>
<openSearch:totalResults>94</openSearch:totalResults>
<openSearch:startIndex>1</openSearch:startIndex>
<openSearch:itemsPerPage>5</openSearch:itemsPerPage>
<entry>
<id>http://gdata.youtube.com/feeds/api/videos/dMH0bHeiRNg</id>
<published>2006-04-06T14:30:53.000-07:00</published>
<updated>2008-03-12T00:22:25.000-07:00</updated>
<category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat'
term='Dancing'/>
<category scheme='http://schemas.google.com/g/2005#kind'
term='http://gdata.youtube.com/schemas/2007#video'/>
<category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat'
term='comedy'/>
<category scheme='http://gdata.youtube.com/schemas/2007/categories.cat'
term='Comedy' label='Comedy'/>
<title type='text'>Evolution of Dance</title>
<content type='text'>The funniest 6 minutes you will ever see!
Remember how many of these you have done!
Judson Laipply is dancing -
http://www.evolutionofdance.com -
for more info including song list!</content>
<link rel='alternate' type='text/html'
href='http://www.youtube.com/watch?v=dMH0bHeiRNg'/>
<link rel='http://gdata.youtube.com/schemas/2007#video.responses'
type='application/atom+xml'
href='http://gdata.youtube.com/feeds/api/videos/dMH0bHeiRNg/responses'/>
<link rel='http://gdata.youtube.com/schemas/2007#video.related'
type='application/atom+xml'
href='http://gdata.youtube.com/feeds/api/videos/dMH0bHeiRNg/related'/>
<link rel='self' type='application/atom+xml'
href='http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed/dMH0bHeiRNg'/>
<author>
<name>judsonlaipply</name>
<uri>http://gdata.youtube.com/feeds/api/users/judsonlaipply</uri>
</author>
<media:group>
<media:title type='plain'>Evolution of Dance</media:title>
<media:description type='plain'>The funniest 6 minutes you will ever see!
Remember how many of these you have done!
Judson Laipply is dancing -
http://www.evolutionofdance.com -
for more info including song list!</media:description>
<media:keywords>comedy, Dancing</media:keywords>
<yt:duration seconds='360'/>
<media:category label='Comedy'
scheme='http://gdata.youtube.com/schemas/2007/categories.cat'>Comedy
</media:category>
<media:content
url='http://www.youtube.com/v/dMH0bHeiRNg' type='application/x-shockwave-flash'
medium='video' isDefault='true' expression='full' duration='360' yt:format='5'/>
<media:content
url='rtsp://rtsp2.youtube.com/ChoLENy73wIaEQnYRKJ3bPTBdBMYDSANFEgGDA==
/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='360'
yt:format='1'/>
<media:content
url='rtsp://rtsp2.youtube.com/ChoLENy73wIaEQnYRKJ3bPTBdBMYESARFEgGDA==
/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='360'
yt:format='6'/>
<media:player url='http://www.youtube.com/watch?v=dMH0bHeiRNg'/>
<media:thumbnail
url='http://img.youtube.com/vi/dMH0bHeiRNg/2.jpg' height='97' width='130'
time='00:03:00'/>
<media:thumbnail
url='http://img.youtube.com/vi/dMH0bHeiRNg/1.jpg' height='97' width='130'
time='00:01:30'/>
<media:thumbnail
url='http://img.youtube.com/vi/dMH0bHeiRNg/3.jpg' height='97' width='130'
time='00:04:30'/>
<media:thumbnail
url='http://img.youtube.com/vi/dMH0bHeiRNg/0.jpg' height='240' width='320'
time='00:03:00'/>
</media:group>
<yt:statistics viewCount='78060679' favoriteCount='400468'/>
<gd:rating min='1' max='5' numRaters='276123' average='4.65'/>
<gd:comments>
<gd:feedLink href='http://gdata.youtube.com/feeds/api/videos/dMH0bHeiRNg
/comments' countHint='124130'/>
</gd:comments>
</entry>
<entry>
<id>http://gdata.youtube.com/feeds/api/videos/cQ25-glGRzI</id>
<published>2007-02-27T15:08:01.000-08:00</published>
<updated>2008-03-12T00:46:25.000-07:00</updated>
...
</entry>
</feed>