Rivergate Software Inc. - makers of DVDAfterEdit

Volume space is defined by a UDF Volume and File structure.

Volume space is divided into zones for HD DVD-Video and DVD others (commonly referred to as ROM data). THe HD DVD-Video zone is further divided into the Standard Content zone and the Advanced Content zone. The zones may be placed on the disc in any desired order.

Within the Standard Content zone, the Video Manager (VMG) is followed by one or more Standard Video Title Sets (VTS). Within these, the files must be named and written in a pre-defined order. (See Directory and File Rules).

The Advanced Content zone must contain an Advanced VTS title file, which must be named "HVA00001.VTI", and other Advanced Content files, whose file names are described in the title file.