Glad you like it!
I'm the frontend developer for Ulterius and it's nice to see people spreading the word. Will gladly answer questions as well.
One thing though. If you could, please use the domain ulterius.io for links in the future. That's our official site now because search engines and Facebook hate .xyz domains because most of them belong to Chinese spammers since they're so cheap.
Hi, I helped bring this project to life (I wrote the server portion) if anyone has any questions about how certain stuff works I'll be more than happy to answer your questions.
It uses pixel difference encoding down to alpha channels so that it can send you the bare minimum amount of data you need to keep a constant, non glitched image. This means 60fps using just under 1.5mbps