json_metadata = self._html_search_regex(
r'class=(?:"(?:mediaLink|wdrrPlayerPlayBtn|videoButton)\b[^"]*"[^>]+|"videoLink\b[^"]*"[\s]*>\n[^\n]*)data-extension="([^"]+)"',
webpage, 'media link', default=None, flags=re.MULTILINE)
json_metadata = self._html_search_regex(
r'class=(?:"(?:mediaLink|wdrrPlayerPlayBtn|videoButton)\b[^"]*"[^>]+|"videoLink\b[^"]*"[\s]*>\n[^\n]*)data-extension="([^"]+)"',
webpage, 'media link', default=None, flags=re.MULTILINE)