If you back up the modern day Arrs databases then it's essentially the same thing and already built into the software that will redownload them for you. That's my solution. I backup my backups of those, of my home assistant, my Immich library, my Nextcloud, etc... Pirated media is, for the most part, out there backed up on several places already.

If you tested whether those files had healthy seeds on the Net, that would actually be a pretty cool idea. But I have some rather rare Linux ISOs that definitely don't get seeded anymore so those I would want to not lose and actually backup.

All my TV shows and movies, I don't bother. But my 150gb mp3 library I keep backed up because it's much smaller and I know some of that stuff is not readily available online.

Exactly. Regimes want to kill this as fast as they can to milk us of every penny witghr their shitty services. I dont trust any sites will stay up.

You can replicate across more than one provider and do automated regular monitoring that backups are still accessible.

If one goes down you hopefully have time to figure out a replacment before the other(s) do.

Probably not worth it for a bunch of xvid dvdrips or historical archives of full system-level backups but for critical data it's sensible.

I have 45TB of data and the majority of that is definitely downloaded media. They call us data hoarders for a reason.

I suggest making a script that uses existing software (ie mkvtoolnix) to extract the dubbed audio and then backing that up and l leaving the high quality video to the Web to backup.

I know it's less than ideal but you can automate both extracting it and muxing it back in. It may take some effort to setup, but it's well worth the huge recurring costs incurred from backing up that amount of data.

Just an idea to consider.