Extracting piece of data from youtube data API

I need to extract little piece of Data from Youtube Data API (with params), but what i have only seen , is that i must parse all data to get it ...

Let's see the example that i need :

URL = http://gdata.youtube.com/feeds/api/videos/2ILsMmZG4VM

http://gdata.youtube.com/feeds/api/videos/2ILsMmZG4VM2007-06-03T12:41:05.000Z2011-08-03T08:29:25.000ZDARKER THAN BLACK OPENING HD:EDIT: First Darker than Black opening. I uploaded this a long time ago and was NOT aware of the poor translations so please don't be upset and just enjoy the music/animation. If the translations really bother you, then watch a different video. Seriously guys...JuN0http://gdata.youtube.com/feeds/api/users/jun0Film:EDIT: First Darker than Black opening. I uploaded this a long time ago and was NOT aware of the poor translations so please don't be upset and just enjoy the m开发者_JAVA百科usic/animation. If the translations really bother you, then watch a different video. Seriously guys...darker, then, black

And more deep , i can see the part i need , which is the RTSP link :

...media:content url='rtsp://v7.cache8.c.youtube.com/CiILENy73wIaGQlT4UZmMuyC2BMYESARFEgGUgZ2aWRlb3MM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='101' yt:format='6'/

Then what i need to know if exist params to put in the link to extract directly the URL , to not have to parse all the XML .

Thanks for all , and forgive my bad english.

SOLUTION:

I have found it thx to Sherif (1 point for you)

http://gdata.youtube.com/feeds/api/videos?q="2ILsMmZG4VM"&fields=entry(media:group(media:content))

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Try this:

http://gdata.youtube.com/feeds/api/videos?q="2ILsMmZG4VM"&fields=entry(media:content)

However The fields parameter is currently used for experimental features only