User:bdinfo/mpls

Note: All multi-byte integers are in big-endian format.

Blu-Ray Playlist (.mpls) File Format

Field	Position in file	Size (in bytes)	Description
Header	$00-$03	4	Consists of the ASCII text "MPLS".
Version Number	$04-$07	4	Version number in ASCII format. Usually this will be "0200".
Playlist start address	$08-$0B	4	Offset of the Playlist section. Measured from the beginning of the file. This address should be on a word boundary.
Playlist Mark start address	$0C-$0F	4	Offset of the Playlist Mark section. Measured from the beginning of the file. This address should be on a word boundary.
Extension Data start address	$10-$13	4	Offset of the Extension Data section. Measured from the beginning of the file. A value of $00000000 means that the Extension Data section is not present. If used, this address should be on a word boundary.
Reserved	$14-$27	20	Currently unused. All bytes in this section should be set to zero.
Application Info Playlist length	$28-$2B	4	Length of the Application Info Playlist section, not counting the four length bytes themselves. This value will almost always be set to $0000000E (14 bytes).
Reserved	$2C	1	Currently unused. This byte should be set to zero.
Playback type	$2D	1	$01 = Standard play $02 = Random play $03 = Shuffle play
Playback count	$2E-$2F	2	Only used if Random or Shuffle mode is selected via the previous byte. If Standard mode is selected, this value is disregarded (and usually will be set to $0000).
User operation mask table	$30-$37	8	Description pending.
Miscellaneous flags	$38	1	Bit 7: Playlist random access flag (1 = this playlist cannot be accessed by user navigation commands) Bit 6: Allow mixing of sound effects with stream audio (1 = yes) Bit 5: Lossless sound may bypass mixer (1 = yes) Bits 4-0: Reserved (set to 0)
Reserved	$39	1	Currently unused. This byte should be set to zero.
Playlist section	Starts at address specified in $08-$0B	Varies	See table below for details.
Playlist Mark section	Starts at address specified in $0C-$0F	Varies	See table below for details.
Extension Data section	Starts at address specified in $10-$13	Varies	No information is available on this segment, which is almost always omitted.

Playlist section

Field	Offset	Size (in bytes)	Description
Length	$00-$03	4	Length of the Playlist section, not counting the four length bytes themselves.
Reserved	$04-$05	2	Currently unused. These bytes should be set to zero.
Number of Play Items	$06-$07	2	Number of Play Items to follow.
Number of Subpaths	$08-$09	2	Number of Subpaths to follow. If there are no Subpaths, this value will be set to $0000.
Play Item entries	Starts at $0A	Varies	See table below for details.
Subpath entries	Varies	Varies	See table below for details.

Playlist Mark section

Field	Offset	Size (in bytes)	Description
Length	$00-$03	4	Length of the Playlist Mark section, not counting the four length bytes themselves. This value should equal (Number of Playlist Marks * 14) + 2.
Number of Playlist Marks	$04-$05	2	Number of marks to follow. Each mark is 14 bytes long.
Playlist Mark entries	Starts at $06	Varies	Playlist Mark entries follow the section header. See table below for details.

Playlist Mark entry

Field	Offset	Size (in bytes)	Description
Reserved	$00	1	Currently unused. This byte should be set to zero.
Mark Type	$01	1	1 = Entry Mark 2 = Link Point
Play Item ID	$02-$03	2	Determines which Play Item the mark is associated with.
Time Stamp	$04-$07	4	Time offset associated with this chapter mark. This is measured in 45000ths of a second.
Entry ESPID	$08-$09	2	Exact purpose unknown. This value will usually be set to $FFFF.
Duration	$0A-$0D	4	Duration of this chapter. This is measured in 45000ths of a second. A value of $00000000 indicates that there is no fixed duration.