The DVD player can locate the video title 1 and its video title set (VTS) by reading the contents of the data structure Video Manager Part-Of-Title Search (VMG_PTT_SRPT).

The location of this data structure is defined at the byte offset 196 of the VMGM_MAT table (which is sector 1). The contents of the following data structure can be obtained by reading from the file position at 2048 bytes (1 sector * 2,048 bytes/sector) relative to the beginning of the VIDEO_TS.IFO file.

This table indicates that the video title number 1 (at byte offset 15) is stored in the video title set (VTS_01, at byte offset 14). This video title has one video angle and contains three chapters. The file VTS_01_0.IFO begins at sector 6 (at byte offset 16). Additional playback information can be obtained by reading the contents of data structures stored in VTS_01_0.IFO.

Video Manager Part-Of-Title Search (VMG_PTT_SRPT)
Offset	Bytes	Description	Value
0	2	Number of titles	1
2	2	Padding bytes
4	4	Address of last byte (length of table-1)	19
One or more title descriptions following for each title defined above
8	1	Playback type	4
9	1	Number of video angles	1
10	2	Number of chapters	3
12	2	Parental management mask	0
14	1	Video title set having this video title	1
15	1	Title number	1
16	4	Video title set sector address	6

The remaining contents of this page are available from the Unofficial DVD specifications 2.2 ebook.

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Having more detailed information than on the web pages.
Understanding DVD terminology and architecture.
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Ability to verify and edit data structure fields using IFOEdit with a sample DVD title.
Understand how DVD menus work with navigation commands.
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