HD DVD Video Disc Contents
An HD DVD Advanced Application is organized using a Windows-style directory system to store all necessary files (video, graphic, script, mark-up, and so on). The HD DVD application has a root directory containing two primary subdirectories. These subdirectories are named HVDVD_TS and ADV_OBJ. The HVDVD_TS directory contains the primary video title sets. The ADV_OBJ directory contains the DISCID.DAT configuration file, secondary video set, playlist files, application files (manifest files, mark-up files, and script files), advanced subtitles, and non-video assets (graphics, audio files, and fonts), which can be arranged as desired in subdirectories of the ADV_OBJ directory.