This is relatively niche, but that's a thing for anime fan-encodes. Some groups publish their vapoursynth scripts, allow you to produce the same re-encoding (given you have the same source video). e.g.:

* https://github.com/LightArrowsEXE/Encoding-Projects

* https://github.com/Beatrice-Raws/encode-scripts

Hm, the video itself would probably be referenced by an indexable identifier like "Anime X Season 1 Chapter 5", and provisioning of the actual video would be up to the builder to get (probably from some torrent network or from DVD although no one will do that)