Another idea.
Perhaps creating free https://archive.org/ accounts and using costless macro programs (the likes of Pullover macro https://www.macrocreator.com/ etc.) to archive all your videos.
And archiving all your posts/ or entire forum:
https://github.com/internetarchive/w...e-webextension
Saying because the problem is not isolated, and is bound to increase with time as long as it's neglected and not fixed:
Thanks a lot!
EDIT:
Also using:
HTTRACK
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