OK....follow me on this this. A superbit title has no extras on the disc which contains the film. All the space is used for the video and audio. If you go by the information in the case of a superbit title, around 66% of the disc is used by video and 33% is used by the DD5.1/DTS5.1. And there is no space free on the disc... Ok, all agreed so far..... So...say they give 90 minute film, and a 180 minute film the superbit treatment. Say both films had a 2.35:1 anamorphic picture, with the usual DD5.1 and DTS5.1. Will the film that is 90 mins, be encoded with a lesser compression ratio, to the 180 mins film?? As if both films where encoded with the same compression ratio, either the 90 mins film would have free space on the disc, or the 180mins film would need to discs. Opinions please!!