A DIY audio commentary. Whoever is speaking over the movie, they weren't involved in making it. These commentaries are usually available as audio files, which must be synchronized with the listener's copy of the film. This mild inconvenience skirts the heinously inconvenient DMCA restrictions that prohibit distributing the audio and video together. Since Roger Ebert described the concept in 2002, TV and film creators have employed alternate commentary methods in their own work. However, because of their authorship, these are not alternate commentaries.