value="([^"]*)"
             ''', orig_webpage)
 
-        self._sleep(12, video_id)
+        self._sleep(6, video_id)
 
         webpage = self._download_webpage(
             url, video_id, data=urlencode_postdata(fields), headers={
             'title': title,
             'url': video_url,
             'thumbnail': thumbnail,
+            'http_headers': {
+                'Referer': url,
+            },
         }