What is a directors commentary? (Homework)

A Director's Commentary:

An audio commentary is an additional audio track consisting of a talk or comments by one or more people. Commentaries can be serious or entertaining in nature, and can add information which otherwise would not be disclosed to audience members, an example would be on a DVD where the director might talk about how he made the film.

There are several different types of commentary. The two main types simply define the length of the commentary rather than the type of content. They are:

• Partial or scene-specific, which only covers selected scenes of the film. Sometimes these are recorded without the speaker viewing the film and thus the commentator may make more general comments than pointing out specific details.
• Feature-length or screen-specific, which is recorded in one session: the speakers watch the movie from beginning to end and give their thoughts directly based on what is happening on-screen.

Typically a commentary track will include feature-length commentary from the film's director, cast members, or occasionally writers and producers.