webpage = self._download_webpage(url, video_id)
timestamp = parse_iso8601(self._search_regex(
r'<span class="publish-date"><time datetime="([^"]+)">',
webpage, 'timestamp'))
webpage = self._download_webpage(url, video_id)
timestamp = parse_iso8601(self._search_regex(
r'<span class="publish-date"><time datetime="([^"]+)">',
webpage, 'timestamp'))