My GoPro can record 4k@30fps. A 20-25min video is 5+gb. The newer GoPros will do 8k@60fps i believe, maybe only 30fps. That will take up a lot more space.
The cards have to be the higher speed cards to be able to record those resolutions, but if I were a person that recorded a lot of stuff, having a card that large would be nice for a day long session.
I bought a 1TB SD card for my go pro/drone the other day. In theory it’s good for 16 hours of recording non stop.
I also have both a 512gb and a 256gb sd card for my dash cam, I’d really like to get a compatible 1TB card, but 4TB would be even nicer. Maybe I’d be able to go a month without offloading the card.
It’s really a convenience thing. I have a 256 in my GP, and that lasts me a couple of days worth of snowboarding sessions, or longer with miscellaneous recordings. Upload my stuff and clear it. EzPz.