540
YouTube adds new hurdles for ad blockers, and there's currently no way around it
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
Even if you limit it to 720p, if it were to be even a quarter as popular as youtube, the bandwith and storage requirements would still be astronomical.
not to even mention the computational power required to process and transcode all that data from whatever format you upload it to, into whatever format the platform wants.