Rivergate Software Inc. - makers of DVDAfterEdit

This section provides technical reference material for all users. A more informal treament can be found in the Getting Started section.

An HD DVD contains two types of contents: one is Standard Content and the other is Advanced Content. Standard Content is a pure extension of SD, as described in DVD-Video specification Version 1.1.

Advanced Content consists of Advanced Navigation such as Playlist, Manifest, Markup and Script files, and Advanced Data such as Primary/Secondary Video Set and Advanced Element (image, audio, text, etc.). At least one Playlist file and Primary Video Set must be on a disc which has Advanced Content, and other data can be on a disc and also be delivered from a server.

The specification allows two Categories of discs, Standard Content and Advanced Content.

Advanced Data and Standard Content both contain EVOBs, which consist of video, audio, subpicture, and other data multiplexed together. Standard Content EVOBs contain button highlight and other information that is not used in Advanced Content. Advanced Content EVOBs may contain copies of some Advanced Content files, multiplexed in with the video, audio and subpicture data as Archiving data.

An HD DVD has a Volume and File Structure and a set of Directory and File Rules. Volume space is divided into zones for HD DVD-Video and DVD others (commonly referred to as ROM data).

The top level of the DVD must always contain a folder with the name HVDVD_TS. If the DVD contains Advanced Content, it must also have a folder with the name ADV_OBJ at the top level.