compat_parse_qs,
     compat_urllib_parse,
     compat_urllib_parse_unquote,
-    compat_urllib_request,
 )
 from ..utils import (
     determine_ext,
     ExtractorError,
     int_or_none,
+    sanitized_Request,
 )
 
 
             'filters': '0',
             'submit': "Continue - I'm over 18",
         }
-        request = compat_urllib_request.Request(self._FILTER_POST, compat_urllib_parse.urlencode(disclaimer_form))
+        request = sanitized_Request(self._FILTER_POST, compat_urllib_parse.urlencode(disclaimer_form))
         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
         self.report_age_confirmation()
         self._download_webpage(request, None, False, 'Unable to confirm age')
                 return self.url_result('theplatform:%s' % ext_id, 'ThePlatform')
 
         # Retrieve video webpage to extract further information
-        req = compat_urllib_request.Request('http://www.metacafe.com/watch/%s/' % video_id)
+        req = sanitized_Request('http://www.metacafe.com/watch/%s/' % video_id)
 
         # AnyClip videos require the flashversion cookie so that we get the link
         # to the mp4 file
         # Extract URL, uploader and title from webpage
         self.report_extraction(video_id)
         video_url = None
-        mobj = re.search(r'(?m)&mediaURL=([^&]+)', webpage)
+        mobj = re.search(r'(?m)&(?:media|video)URL=([^&]+)', webpage)
         if mobj is not None:
             mediaURL = compat_urllib_parse_unquote(mobj.group(1))
-            video_ext = mediaURL[-3:]
+            video_ext = determine_ext(mediaURL)
 
             # Extract gdaKey if available
             mobj = re.search(r'(?m)&gdaKey=(.*?)&', webpage)
 
         age_limit = (
             18
-            if re.search(r'"contentRating":"restricted"', webpage)
+            if re.search(r'(?:"contentRating":|"rating",)"restricted"', webpage)
             else 0)
 
         if isinstance(video_url, list):