How does this compare to https://awesome-selfhosted.net/ ?

https://docs.nextcloud.com/server/latest/admin_manual/installation/source_installation.html

• What backup service do you use? - Lemmy.world
• What are your backup solutions? - Lemmy.world
• How do you guys back up your server? - Lemmy.world
• How do you backup things to your server? - Lemmy.world
• How to store backups? - Lemmy.world
• How do you backup your data? - Lemmy.world
• Need help with a backup solution - Lemmy.World

I think Peertube would be overkill for a single channel, but it’s the closest to YouTube in terms of features (multiple formats/transcoding, comments, etc). Otherwise I would just rip the channel with yt-dlp and setup a “mirror” on something simple like a static site or blog. Find something that works, then automate (a simple shell script + cron job would do the trick).