+ page_params = self._parse_json(self._search_regex(
+ r'page_params\.zoneDetails\[([\'"])[^\'"]+\1\]\s*=\s*(?P<data>{[^}]+})',
+ webpage, 'page parameters', group='data', default='{}'),
+ video_id, transform_source=js_to_json, fatal=False)
+ tags = categories = None
+ if page_params:
+ tags = page_params.get('tags', '').split(',')
+ categories = page_params.get('categories', '').split(',')
+