no they are not original work but they are fair use... driving free views to the account users :) so its not copyrighted.... also like i said be careful what you wish for ... cause some whales may not like your post there for down vote you just cause they dont like your post..... meaning you wont make a penny..... i want to see how you would feel about it... also the link to the source is simple YOUTUBE and owner of the account his name is there don't worry he is happy i share his videos for free if he is happy why should you care ? :)