if not formats:
raise ExtractorError('Cannot find video formats')
+ # Downloads with browser's User-Agent are rate limited. Working around
+ # with non-browser User-Agent.
+ for f in formats:
+ f.setdefault('http_headers', {})['User-Agent'] = 'facebookexternalhit/1.1'
+
self._sort_formats(formats)
video_title = self._html_search_regex(