webpage, 'approximate filesize', fatal=False))
         tbr = int_or_none(self._html_search_regex(
             r'<div class="quality[^"]*"></div>\s*([0-9]+)\s*kbps',
             webpage, 'approximate filesize', fatal=False))
         tbr = int_or_none(self._html_search_regex(
             r'<div class="quality[^"]*"></div>\s*([0-9]+)\s*kbps',