DVD Demystified

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Figure 6.35
DVD text data
example
Chapter 6
for enhancing use of the disc, such as Web links. DVD text is organized in a
way that mirrors the logical hierarchy of the DVD volume (see Figure 6.35).
Text is stored in language blocks so that the contents can be described in
different languages. There is no requirement that the information be the
same in both languages. For example, detailed information could be presented
about every title and chapter in English but only title information in
other languages.
DVD has two types of text items: structure identifiers and application
content items. Each text item includes a numerical code that identifies it.
Text items with a code of 1 through 32 are structure identifiers. They have
no associated text. The numerical code identifies the logical structure to
which any following content items belong (see Table 6.37). A hierarchical
structure is used that corresponds closely to the logical structure of a DVD
disc contents: volume, title, chapter, and so on. Codes above 32 identify content
items that hold text information. The exact way in which content
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