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

[dixen]

Originally Posted by hydefromt70s

I'm planning to make may own repack of this game version and have few questions.
Obviously game is encrypted so it won't compress well until being decrypted first. If I decrypt the game first I understand I will get decrypted and unpacked game files – does the game work properly with unpacked files? Is there anyway to compress game with decryption on the fly?

Only decrypt in new *.ttarch file..Unpack no needed

[hydefromt70s]

Originally Posted by dixen

Only decrypt in new *.ttarch file..Unpack no needed

Sorry for being pain in the ass but I'm afraid I don't understand what do you mean by that. Could you explain it more? How can I take encryption off those files?

I'm using 'ttarchext.exe' tool for unpacking from zenhax forum (it has built-in encryption keys). Do I have to unpack each .ttarch2 files and then rebuilt them to take that encryption off or what?

[Masquerade]

Euro Truck Simulator 2

12GB into 4.9GB

xtool+srep+lolz

Use a small chunk size if you're on a low amount of RAM otherwise your PC will crash.

On newer XTools use -lm param.

[:( Sad8669]

Originally Posted by Masquerade

Euro Truck Simulator 2

12GB into 4.9GB

xtool+srep+lolz

Use a small chunk size if you're on a low amount of RAM otherwise your PC will crash.

On newer XTools use -lm param.

Does lm mean 'limited memory' ?
Its merely just a guess.

if not i would like to know what does it do.

[Snake288]

Hello
Masquerade

Use a small chunk size if you're on a low amount of RAM otherwise your PC will crash.

On newer XTools use -lm param.

Informs by showing an example


;XTool 2020
[External compressor:xtool_zlib]
header = 0
packcmd = "PRE\XTool_2020\Win64\XTool.exe" precomp -mzlib -c64mb -t100p --dbase - - <stdin> <stdout>

[Masquerade]

Originally Posted by :( Sad8669

Does lm mean 'limited memory' ?
Its merely just a guess.

if not i would like to know what does it do.

You only need to use it if you are on a machine with low amounts of RAM, e.g. 16GB,

I use 64GB with a 256mb chunk size, no issues.

[Snake288]

-lm Help About The Example I Want To Use This Command

Does anyone know the sample Method

XTool 2020 -lm

[KaktoR]

xtool.exe precomp -mzlib -c64mb -t100p -lm --dbase - - <stdin> <stdout>

[:( Sad8669]

Originally Posted by Masquerade

You only need to use it if you are on a machine with low amounts of RAM, e.g. 16GB,

I use 64GB with a 256mb chunk size, no issues.

That is much appreciated, Thanks.

Also if you don't mind, where can i find information about what each parameter does?

I do know some basics, but they are just basics.

[KaktoR]

Inside the xtool help file....

[Snake288]

is there a way to use lolz?
Powerful compression methods ?

Computer system information



Tools I Use

DiskSpan_GUI 1.0.0.3 [2020.03.22] (xlz4 correction)

[:( Sad8669]

Originally Posted by Snake288

is there a way to use lolz?
Powerful compression methods ?

Computer system information



Tools I Use

DiskSpan_GUI 1.0.0.3 [2020.03.22] (xlz4 correction)

Different games have different encryption. You have to test the game and see for yourself which methods suits the best for it. While lolz is powerful its slow decompression speed is one of its drawbacks. And also use a precompressor before compressing a game such as XTool, ZTool (Old, but just in case), oo2reck.... etc

And don't forget to checkout the Specific Games Method INDEX.

[kj911]

Noob questions from compression via LOLZ: Compression rate better than TTA (FreeArc) methods use LOLZ compressing *.WAV files??

Or use double compression from WAV files?

My favorized methods (from MSTS or any older(?) games): The *.WAV files compressed to --> Archive.arc (with TTA comp.) this archive compressed again to --> Archive2.arc (with REP) method. Fast and good ratio. Second compression process replacing REP to RAZOR or MSC or/and any ones?

Some testing its best rate. Size reduction lower than 35-40% via original size.

Example: Compressed 5001 WAV files. Size: 2.09GB --> 923MB--> 632MB

Please testing and find better methods.

[KaktoR]

Why not use MSC for WAV?

[kj911]

KaktoR: Yes! Not use MSC. Simple FreeArc compression schemes.

Partially tested "Archive.arc" file compressing, use MSC with FROG=9 parameters. (Size: 945602kB)

UPD: Test finished. Results, not good. Small reduction. Results: 906MB (928156kB)

Get the arc file use private testing?? Please via send pm.

Any info: SREP compressed: 632MB, REP compressed: 633MB. small differences.