It's on https://nostube.vercel.app/

nostr:npub1klr0dy2ul2dx9llk58czvpx73rprcmrvd5dc7ck8esg8f8es06qs427gxc is working on it, Florian when uploads there to work? I believe you can upload a video on any nostr client that supports video upload kind and it will show there. You may like to check plebs.app, zap.stream for upload as well.