5. DVD Video Manager (VMG)
Section 12 of this document presents in details the following data structures
in the Video Manager VMG domain.
Video Manager Information Management.
Video Manager Title Map.
Video Manager Program Chain and Language Units.
Parental Management Information.
Video Title Set Attribute Information.
Text Data Management Information.
Cell Address table for VIDEO_TS.VOB
VOBU Address map for VIDEO_TS.VOB
All required and optional structures in the Video Manager are listed in
the Unofficial DVD Specifications 2.2
Acrobat PDF ebook.
5.1. Graphical display of VMG Data Structures
The above illustration displays major data structures in the Video Manager VMG
which are stored in the file VIDEO_TS.IFO. The Video Manager Information Management
points to the physical location of the First-Play PGC, each VTS on the DVD disc,
and other data structures in the VMG. The Video Manager Title Map acts as an index
to all video titles on the disc. The Video Manager Language Units provide
information on all language units found in the Video Manager domain. The Video
Manager Menu Program Chain Units point to the location of all PGCs present in the
VMG, including the title menu if this menu is present. The Video Manager Cell
Address Map and the Video Object Unit Map point to locations of all cells in the
VMG and their associated VOB units.