yes thats usually what that means just like on amazon when it says HD when u play a tv ep or film its HD, But only HD or SD ones not UHD on amazon that isOkay, HBO Max uses L3, sure. But what exactly would you like me to check? That some logos appear next to movie titles? You really think that means they play like that in a web browser? Am I being punk'd?
Edit: I may be wrong.