Best Compression Methods for 'Specific' Games. Q&A

[wareck]

Originally Posted by KaktoR

Indiana Jones and the Great Circle
Version 12th May 2026

If I remember (i do not keep this game) :
file with HQ (high quality textures) have an specific oodle library and the other files of game have the other one.

I used a specific data file for HQ and install them as an optional feature.
I also use a bms script to extract wem files and keep only my language.

With only english and french , without HQ textures and bonus I'm at 56.9gb

[KaktoR]

Originally Posted by wareck

If I remember (i do not keep this game) :
file with HQ (high quality textures) have an specific oodle library and the other files of game have the other one.

I used a specific data file for HQ and install them as an optional feature.
I also use a bms script to extract wem files and keep only my language.

With only english and french , without HQ textures and bonus I'm at 56.9gb

What I've found out so far:

streamdb - kraken l6 - oo2core_9_win64.dll (2.9.12_2) CRC FCBE6F2C
streamdb (hq) - kraken l6 - oo2core_9_win64.dll (2.9.12_2) CRC FCBE6F2C
resources - kraken l3/l4/l6 - oo2core_9_win64.dll (2.9.13_6) CRC 41AAB7C9 (from game folder)

gameresources_10.streamdb - (2.9.12_2) CRC FCBE6F2C
Streams: 14316 / 14339
Patched: 0 (0,00 MB)
Time: 00:03:43 (CPU 00:18:16)
Size: 2,67 GB >> 4,13 GB

gameresources_10_hq.streamdb - (2.9.12_2) CRC FCBE6F2C
Streams: 631 / 638
Patched: 0 (0,00 MB)
Time: 00:04:08 (CPU 00:20:17)
Size: 2,42 GB >> 3,72 GB


gameresources_10.streamdb - (2.9.13_6) CRC 41AAB7C9
Streams: 13254 / 14339
Patched: 0 (0,00 MB)
Time: 00:03:43 (CPU 00:18:16)
Size: 2,67 GB >> 3,65 GB

gameresources_10_hq.streamdb - (2.9.13_6) CRC 41AAB7C9
Streams: 430 / 638
Patched: 0 (0,00 MB)
Time: 00:04:07 (CPU 00:20:12)
Size: 2,42 GB >> 3,19 GB

However some of the smaller hq patch files works better with the oodle library from game folder.

Average idtech engine experience.

Edit:
resources files

Streams: 1216169 / 1222773
Patched: 0 (0,00 MB)
Time: 01:21:35 (CPU 05:26:22)

Size: 13,8 GB >> 31,7 GB

To make srep dedup takes effect for all the files, you have to use xtool as a standalone compressor without freearc and place freearc as a second step after xtool. Otherwise you will miss a load of duplicates if you precompress the files separately.

[Dunnowho69]

Can anyone share the OGGRE_dec couldn't fine anywhere...tried CLS-OGGRE.dll but doesn't work

[wrathma]

Originally Posted by Dunnowho69

Can anyone share the OGGRE_dec couldn't fine anywhere...tried CLS-OGGRE.dll but doesn't work

here.
it doesnt work in stdio btw.

[Dunnowho69]

Originally Posted by wrathma

here.
it doesnt work in stdio btw.

How to use it then with inno ? I was trying to use it on .bank files from forza horizon 6, is there another option?

[wrathma]

Originally Posted by Dunnowho69

How to use it then with inno ? I was trying to use it on .bank files from forza horizon 6, is there another option?

.bank file (atleast in unity games) mostly contains wav or ogg. either way
you have to extract the actual audio data (ogg/wav) from the banks and
then compress them using msc or oggre. and make a diff for the banks
from extracted audio data.
check this thread that explains it.

[Dunnowho69]

I was trying to test Forza Horizon 6 but after getting to around 10% getting Unarc.dll returned an error code: -11. Is there something wrong with my cls.ini ?

[lolz]
Bufsize=512k
transfer_ReadBufSize=512k
transfer_WriteBufSize=512k
MaxThreadsUsage=75%
MaxMemoryUsage=75%

[srep]
Bufsize=24m
Memory=70%-2048m
TempPath=.\

[KaktoR]

Use -mkraken and use the attached library

Streams: 1506 / 1506
Patched: 0 (0,00 MB)
Time: 00:01:13 (CPU 00:06:51)

Size: 255 MB >> 1,02 GB

Done!!!

[KaktoR]

bank is most likely fmod audio. there you need other tools like vgmbox and such.

[Redmist2013]

I watched the Forza Horizon 6 FitGirl unpacker temp files and there are quite a few Oggs in FH6. I'm also not sure what plugin is needed for the minizip files. It might be some sort of encryption like Forza 2023

[Masquerade]

Originally Posted by Redmist2013

I watched the Forza Horizon 6 FitGirl unpacker temp files and there are quite a few Oggs in FH6. I'm also not sure what plugin is needed for the minizip files. It might be some sort of encryption like Forza 2023

There's some ogg yes, but its not all ogg.

The minizip files are compressed with deflate but there's something else funky going on...

There's also some encryped Deflate Steams that have TransformIT encryption layered above. It's been a while since I've been on the scene so I don't know if I can actually be interested to look into this further or not, but I'll link some useful tools here:

https://github.com/Nenkai/ForzaTools...Zip/MiniZip.cs
https://github.com/Doliman100/ForzaTech-crypto-tool

EDIT 1 / ???: Maybe you could hack together the minizip extractor to just write the raw deflate streams, concatenate them (which should allow xtool to process them correctly). Then, just xdelta your hacked together file back to the original minizip.

[kj911]

SREP memory, reduced to 25% settings, solve it the problem? (and dont use SREP 3.93, replace this v3.92.)

[Dunnowho69]

Originally Posted by kj911

SREP memory, reduced to 25% settings, solve it the problem? (and dont use SREP 3.93, replace this v3.92.)

tried with 25% but didn't work, and i already used 3.93 to make the whole repack, guess i am doomed

[wareck]

Originally Posted by Dunnowho69

tried with 25% but didn't work, and i already used 3.93 to make the whole repack, guess i am doomed

hello
Forza Horizon 6 it's *.minizip files who make the mess.
there is a crc error if you try to pak it too much.
use xtool with zlib for theses files
(xtool:mzlib:dd3+LOLZ_NORMAL) will do the job.

.zip files can be compressed with xtool and reflate to have a better ratio.
But you lost the benefit of srep all the files.

I've juste start a test with .zip and .minizip files in the same data block
xtool:c64mb:mzlib:dd3+LOLZ_NORMAL.

I'll see how many % i'll gain...

[Dunnowho69]

Best compression method for LEGO Batman: Legacy of the Dark Knight ?

Sample: https://gofile.io/d/zDuyIS