4 modes with a very efficient mixed resolution with detail frequency control plus some AI detail And data synchronized frame rate upscaling. The modes low clarity, medium clarity, high clarity, and very high clarity. YouTube fits the data flow between these modes with data throttling in low clarity mode for the most efficient picture at a very low data rate.
Youtube games.
For games streaming with the same codec plus the added option of local calc boost on say a powerful gaming pc where by you have to do a reasonable download.
You can also click on a video advert and end up with an interactive try before you buy scene powered by Google ad scenes department.
Games and and scenes can work on a holographic screen but videos that don't support holographic screens will be more fake.
And on Freeview the channels could be just under half the data size and of broadcast quality mid and high clarity channels.