Metal Gear Solid 4 .ssp audio extraction from .dat

[solidus]

So various sounds from MGS4 single player (weapons\footsteps\foley) are stored inside .ssp files which can be played with foobar2000 vgstream. The problem is that most of it is packed inside a sdpack.dat which i cannot extract. The contents seems to be already known:

https://github.com/Joy-Division/JoyDict/blob/master/mgs4/stream/mgs4.eng/sdpack.map

And there is a tool that can extract .dat, but it doesnt work on sdpack.dat specifically. It seems to be aware of the .ssp format though:

https://github.com/Joy-Division/tools-mgs/blob/master/dat-extract_enc.c

Looking at the headers of the sdpack.dat and common .ssp files with HxD i can see that the header looks similar, but alas, the .dat cannot be loaded into foobar. I've attached sdpack_n.dat from Metal Gear Online 2 and two .ssp files from MGO2/Metal Gear Arcade.

Ando here is a link to sdpack.dat from MGS4 just in case:

https://mega.nz/file/jgYkmQKA#XujG4S_uSTrsY0HnlIUWvL7AcKL4hennYrexFOJFz3s

Any help would be appreciated, maybe someone has the files already extracted to share.

sdpack_n.7z on_slot_ex1_mrl.7z on_slot_sna.7z

Edited January 30 by solidus

[solidus]

So i managed to cut a single .ssp file from sdpack_n.dat and it plays fine. I loaded both sdpack_n.dat and on_slot_sna.ssp into HxD and compared them. And it looks like the .dat is just .ssp files going one after another. If you copy the first block which is 0 - 337FF or length 33800 into a new file and add .ssp extension you will get the same on_slot_sna.ssp i uploaded.

Unfortunately writing a fancy .dat extractor is beyond my comprehension. But i guess thats one way to get audio.

EDIT:

Voice lines are extractable too, they are also .ssp files packed into .spc files which are in speech.dat. But its a little different from sdpack.dat in way that each voice line is in a separate .ssp, so it takes forever to get them with HxD, but doable...

wpn001_operator.7z

s04_raxray_snake_hdd.7z

Edited January 29 by solidus

[DKDave]

You can use this basic QuickBMS script to extract the files from SDPACK.DAT (103 files) and SPEECH.DAT (8808 files).

 

 

sspf.zip

[solidus]

@DKDave

Thanks a lot!

 

P.S. I've updated the mega link in the OP with unpacked sdpack if anyone need it.

Edited January 30 by solidus

[Karaage]

On 1/30/2024 at 7:16 AM, DKDave said:

You can use this basic QuickBMS script to extract the files from SDPACK.DAT (103 files) and SPEECH.DAT (8808 files).

 

 

sspf.zip 403 B · 7 downloads

sorry sir, do you remember what script did you upload ?

Or, May I ask what it was?

oh, sorry, nothing

I could'nt see your file without logging in. I got it now!