Tables specific to the Video Title Set IFO

VTS_PTT_SRPT

VTS_PTT_SRPT
	VTS_PTT
	:
	VTS_PTT

VTS_PTT_SRPT

offset	0	2
0	number of titles	reserved
4	end address (last byte of last VTS_PTT)
8	offset to PTT for title 1
C ...	possible additional entries

The VTS_PTT_SRPT contains pointers to the tables for each title, and is indexed by VTS_TTN (title number within VTS)

VTS_PTT

offset	0	1	2	3
0	Program Chain (PGCN)		Program (PGN)
4 ...	possible additional entries

The VTS_PTT contains pointers to the Program Chain (PGCN) and Program (PGN) for each Part-of-Title (PTT or Chapter), and is indexed by TT_PTTN (PTT number within title)

VTS_PGCI

VTS_PGCI
	VTS_PGC
	:
	VTS_PGC

The VTS_PGCI contains a list of Program Chains (PGCs), and the PGCs themselves.

offset 0 1 2 3 4 5 6 7

0 number of Program Chains reserved end address (last byte of last PGC) relative to VTS_PGCI

8 PGC category, see below offset to VTS_PGC, relative to VTS_PGCI

10 ... possible additional entries

breakdown of the PGC category

byte 7 6 5 4 3 2 1 0

0 1=entry PGC title number

1

2 parental management mask

3 parental management mask

On to PGC description

VTSM_PGCI_UT

The VTSM_PGCI_UT contains a number of tables forming a heirarchy. Most entries are 8 bytes long.

VTSM_PGCI_UT
	VTSM_LU
		VTSM_PGC
	:
		VTSM_PGC
:
	VTSM_LU
		VTSM_PGC
	:
		VTSM_PGC

At the top is the VTSM_PGCI_UT which lists all the Language Units.

offset 0 1 2 3 4 5 6 7

0 number of Language Units reserved end address (last byte of last PGC in last LU) relative to VTSM_PGCI_UT

8 ISO639 language code reserved for language code extension Menu existence flags 80 = root, 40 = sub-picture, 20 = audio, 10 = angle, 08 = PTT offset to VTSM_LU, relative to VTSM_PGCI_UT

10 ... possible additional entries

Next, the VTSM_LU which lists all the Program Chains.

offset 0 1 2 3 4 5 6 7

0 number of Program Chains reserved end address (last byte of last PGC in this LU) relative to VTSM_LU

8 PGC category, see below offset to VTSM_PGC, relative to VTSM_LU

10 ... possible additional entries

breakdown of the PGC category

byte 7 6 5 4 3 2 1 0

0 1=entry PGC reserved menu type (entry only) 3 = root, 4 = sub-picture, 5 = audio, 6 = angle, 7 = PTT (chapter)

1

2 parental management mask

3 parental management mask

On to PGC description

VTS_TMAPTI

This table contains time maps for each PGC.

VTS_TMAPTI
	VTS_TMAP
	:
	VTS_TMAP

VTS_TMAPTI

offset 0 1 2 3

0 number of program chains

4 end address (last byte of last VTS_TMAP)

8 offset to VTS_TMAP 1
Note: each PGC MUST have a time map, even if it is empty

C ... possible additional entries

VTS_TMAP

offset 0 1 2 3

0 time unit (seconds) number of entries in map
0 for empty map
2048 maximum

4 sector offset within VOBS of vobu which begins on or before the time for this entry and ends after the time for this entry.
bit 31 is set if the next time entry is for a different cell

8 ... additional entries

DVD-Video info home