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

4 sector offset within VOBS of nearest VOBU
bit 31 set if VOBU time codes are discontinuous with previous

8 ... additional entries

DVD-Video home