Fansub

A Fansub (short for fan-subtitled) is a version of a foreign film or foreign television program (like an anime) which has been translated by fans and subtitled into a language other than that of the original. The subtitles can be either embedded into the video ("hard sub"), integrated via the Closed-Captioning (CC) part of the video, or provided as a file that needs to be integrated by a video player app. Fan subs vary in quality from as good as or better than professional to very poor (uses wrong words, many misspellings, garbled text, etc.).