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Decoding JBK 6628 DVD Karaoke Disc

by jim75 :: Rate this Message:

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Hello all, I am super impressed with the progress that bigboss97 and woid made with the California DVD player.  However, I have a JBK 6628 instead.  So I am trying to see if I could decode the same like the California player.

Here is a manual for making the disc, provided that we have the software
JBK_Manual%5B1%5D.doc  I'd searched in vain and find no such software on the net.  Nor the format they mention (.COB).

I am rather surprised that the JBK layout is very close to the California disc.  The files are:
DTSMUS00.DKD
DTSMUS01.DKD
DTSMUS02.DKD
DTSMUS03.DKD
DTSMUS04.DKD
DTSMUS05.DKD
DTSMUS10.DKD
DTSMUS20.DKD

The tables of tables start at 0x200 in DTSMUS00.DKD just like HOTDOG file, however the offset need to be multiple by 0x800 to get to the table offset.  

The first table start at 0x800 just like the HOTDOG file, however the song offset need to add the offset of the table to get to the song entries.

The song entries are not the same as the HOTDOG file (.COB format?)  This is where I am stuck.  Here is part of the first song entry:
00001000   00 00 0C 41 00 00 0D F8  00 00 00 05 04 80 00 10   ...A...ø.....€..
00001010   20 30 10 20 00 10 41 03  10 50 32 10 50 0D 00 A1    0. ..A..P2.P..¡
00001020   02 04 01 05 10 F1 08 11  20 00 11 10 00 03 11 09   .....ñ.. .......
00001030   10 B1 0D 11 41 05 03 51  05 11 71 02 11 D1 13 10   .±..A..Q..q..Ñ..
00001040   C1 0E 11 91 24 12 60 00  04 51 05 06 41 05 07 71   Á..‘$.`..Q..A..q
00001050   05 06 11 05 07 21 2A 10  50 20 10 50 56 12 E1 05   .....!*.P .PV.á.

The first 4 bytes doesn't look like the length, not sure what it's.

Any suggestion on how to decode the song entry block?

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