A website i found now, maybe is new and perhaps coud be up fo for the standards of archive.is and waybackmachine. It also saves videos from some website and might even host videos that are deleted by the wayback for copyright strike and such. I will leave here for research purpose.
I've been using this archive this year, it's pretty solid. Very fast. I archived someone's entire reddit account through it once. It's not 100% perfect of course, but nothing is. I'd say it's more of an alternative to archive.is than wayback, since most archives are pure screenshots and not full-webpage archival like wayback does. But it's better than no archive.
Yeah, I have been using this for more than a year for preserving YouTube videos, yet some of the videos are refusing to be archived (they are stuck in the "Archiving in progress..." loading screen).
It would have been great if this website also had an app version for desktop, mobile, and PlayStation/Xbox consoles, so I could view archived YouTube videos on any device I have.
That is a good site, shame that the #youtubearchive is now missing.
it's not missing you just have to be a person with research or other reasons to contact the site owner for the videos. Something like that. At least if it finds a video on #youtubearchive it gives you an email to contact