--user-agent UA specify a custom user agent
--referer REF specify a custom referer, use if the video
access is restricted to one domain
+ --add-header FIELD:VALUE specify a custom HTTP header and its value,
+ separated by a colon ':'. You can use this
+ option multiple times
--list-extractors List all supported extractors and the URLs
they would handle
--extractor-descriptions Output descriptions of all supported