Since my new #pixel8pro only has 1TB of space and no expandable storage, I decided that I would keep all my "on device" videos as 720p instead of the 4k 60fps originals (it's visually indistinguishable while watching them on the phone anyway, as far as I can tell).
450GB compressed all the way down to 21 GB, wow!
Though I guess they don't really make 2TB SDHC cards yet, so my plan to get a tablet with a 2TB memory card and keep the originals on it might not work out as well as I had hoped.
Given how much space I saved, it might be worth it to use 1080p and just have that be the main thing I watch on both phone and tablet.