+        vid = self._search_regex(
+            r'videoId["\']\s*:\s*(["\'])(?P<value>(?:(?!\1).)+)\1', webpage,
+            'video id', fatal=None, group='value')
+        in_key = self._search_regex(
+            r'inKey["\']\s*:\s*(["\'])(?P<value>(?:(?!\1).)+)\1', webpage,
+            'key', default=None, group='value')
+
+        if not vid or not in_key: