Directors commentary evaluation

Directors commentary, also known as audio commentary, is a separate disc which has 1 or more people talking about the video as it plays in time with the original disc. Audio commentary's can be serious or entertaining and they can describe more about what is going on in than the viewers may originally see.
There are two types of main director commentary's:

• Partial or scene-specific, which only covers selected scenes of the film. Sometimes these are recorded without the speaker viewing the film and therefore 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.