+ elif not upload_date and name == 'date':
+ upload_date = unified_strdate(content)
+
+ thumbnails = [{
+ 'id': image.get('type'),
+ 'url': image.get('src'),
+ 'width': int_or_none(image.get('width')),
+ 'height': int_or_none(image.get('height')),
+ } for image in smil.findall(self._xpath_ns('.//image', namespace)) if image.get('src')]