'uploader': self._html_search_regex(
r'(?s)<span class="author">(.*?)</span>', webpage, 'uploader', default=None),
'upload_date': unified_strdate(self._search_regex(
'uploader': self._html_search_regex(
r'(?s)<span class="author">(.*?)</span>', webpage, 'uploader', default=None),
'upload_date': unified_strdate(self._search_regex(