-    def _extract_video(self, video_id):
-        data = compat_urllib_parse.urlencode({'vid': video_id})
-        url_doc = self._download_xml('http://v.iask.com/v_play.php?%s' % data,
-            video_id, u'Downloading video url')
-        image_page = self._download_webpage(
-            'http://interface.video.sina.com.cn/interface/common/getVideoImage.php?%s' % data,
-            video_id, u'Downloading thumbnail info')
+        video_id = mobj.group('video_id')
+        if not video_id:
+            if mobj.group('token') is not None:
+                # The video id is in the redirected url
+                self.to_screen('Getting video id')
+                request = HEADRequest(url)
+                (_, urlh) = self._download_webpage_handle(request, 'NA', False)
+                return self._real_extract(urlh.geturl())
+            else:
+                pseudo_id = mobj.group('pseudo_id')
+                webpage = self._download_webpage(url, pseudo_id)
+                error = get_element_by_attribute('class', 'errtitle', webpage)
+                if error:
+                    raise ExtractorError('%s said: %s' % (
+                        self.IE_NAME, clean_html(error)), expected=True)
+                video_id = self._search_regex(
+                    r"video_id\s*:\s*'(\d+)'", webpage, 'video id')