That site is full of obvious, overwrote AI garbage, always horribly out of date, and talks absolute bollocks all the time.

Transcoding a file, even a 4k HDR one, will not peg your server at 80%+ CPU if you at least have the iq of a turnip and set up GPU transcoding. A cheap ARC card will handle several 4k streams.

This site it trying to sell you a jellyfin administrator app, it has a perverse incentive to make everything sound more complicated than it is. I hate that it comes up in Google results because it's always shit.

"Setting up" HDR on jellyfin is just setting up jellyfin. There really isn't much to it.