In general I use Borg/Borgmatic with borgbase for backup, but movies are a little big, so for now I am just using zfs send/receive to keep a copy on a usb drive updated. Once I am done getting the encoding pipeline scripted (av1/opus/vtt) and the size goes down I will likely start sending it to borgbase as well, or maybe store a copy at my mums place.

I would prefer to use a cloud backup solution that supports zfs send/receive, but they are a bit pricy. zfs.rent seems like a nice solution, but not sure using a US location is a great idea.