Why make this available only for a limited time?
This like Disney putting movies “in the vault” just to build hype & demand back in the day, only without the existing demand, reputation for quality, name recognition, etc.
Plus, anyone who receives the files can just distribute them as soon as he says it’s no longer available.
Yes, anyone can, but they should not say “I created this preservation…” , but this is only for a limited time since I could accidentally delete the mp4 files while emptying device space, but if you manage to download the mp4 files, I will not be demanding you to delete it.