Legalities of Recording Pro Games

So, this is a question I've always wondered as I see channels pop up that only record games from LCS/LCK/LEC etc. Is what they are doing legal? I know that Riot freely allows recording of your gameplays, and even use of the music that they release without copyright issues, however I see channels that only exist to upload Pro games after they are finished. Are these channels technically breaking the rules or does Riot actually care about these channels? I know there is a case for "there's too many that do that, so we can't moderate them all" but I really am interested in the legalities of it all! Figured some people here would know! Thanks!
Report as:
Offensive Spam Harassment Incorrect Board