+ @staticmethod
+ def _extract_url(webpage):
+ mobj = re.search(r'<meta\s[^>]*https?://api\.blip\.tv/\w+/redirect/\w+/(\d+)', webpage)
+ if mobj:
+ return 'http://blip.tv/a/a-' + mobj.group(1)
+ mobj = re.search(r'<(?:iframe|embed|object)\s[^>]*(https?://(?:\w+\.)?blip\.tv/(?:play/|api\.swf#)[a-zA-Z0-9_]+)', webpage)
+ if mobj:
+ return mobj.group(1)
+