i don't really love comparisons to other similar software, but i can probably add a table in the README if that's what people want.

I already grab the description, title, author, and tags (stored in Postgres) and write the metadata dump to disk alongside the video

as in?

importing videos from disk would be awkward unless i had all of the metadata from youtube-dl. if i had the full metadata dump for each video i could probably make it work

sorting: yes, see demo site
categorization for archived videos isn't fleshed out yet, they're currently all categorized as "otomad". I have a tag -> category inference system that I could use here, as in: if it's tagged with "x", then it's a "y". I'll probably work on that tomorrow.

ehh, hard to define. ideally i'd want rate-limiting, individual user uploads, and easier setup for self-hosting. there are also a few bugs I need to fix (like playback on ios)

it's similar in nature

my tool (https://prometheus.tube) does this. you feed it URLs, and it grabs the videos periodically.