How to parse XML from Video sitemap

I wanna get from an xml what's between video:content_loc

<urlset xmlns="http://ift.tt/xwbjRF"
    xmlns:video="http://ift.tt/GRxbjf"> <url> 
 <loc>video.html</loc>
 <video:video>
   <video:thumbnail_loc>video.jpg</video:thumbnail_loc> 
   <video:title>Video Title</video:title>
   <video:description>Video description</video:description>
   <video:content_loc>video.mp4</video:content_loc>
 </video:video> 

thankx in advance