Superbit DVDs are DVDs that use all the space for the just the movie and the soundtrack – no extras such as commentaries or other special features are included on the same disc. The reason for this is that the Superbit process uses the entire bit-rate (thus the name Superbit) capability of a DVD disc, thus maximizing the quality of the DVD format. As a result, the colors have more depth and variation and there is less edge artifact and video noise issues. Think of it as an “enhanced DVD”.
Superbit DVDs are playable on all DVD and Blu-ray Disc players. However, since the introduction of Blu-ray, Superbit DVDs are no longer being released.