I’ve played around with Meshroom in the past.

You’re most welcome

I use pinchflat and TubeArchivist to fetch content from YouTube.

While TubeArchivist is great on it’s own when you fetch individual videos or channels that have their content organized in playlists, it has only a web UI which is OK on phone, but unusable on TV.

There is an add-on to synchronize TubeArchivist and jellyfin, but it doesn’t translate too well between how TA and JF organize their data.

I use Pinchflat exclusively to download channels whose content’s order does not necessarily matter. It nicely provides all the metadata to JF and even integrates sponsorblock as chapters into JF.

I have each of these services running as a docker container.

Yes, I use jellyfin exclusively as a frontend for local mirrors of a handful YouTube channels.