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

[L33THAK0R]

Source: Clean Steam Files

Version 1.10
Original Size: 27.3 GiB
Final Size: 10.705 GiB (Incl. installer)
Ripped Files: Non EN. loc.

Internal Tools used:

Xtool v0.8.9 (Codecs: reflate, zlib)
Srep
Lolz
Oggre

External Tools used:
SFK
DELZORec
MParallel

Additional notes: Happy with how this turned out, a substantial improvement over my previous results, the approx. ~200 MiB reduction can be attributed to more effective processing of the Vorbis OGG audio, as well as tighter tuning for the lolz model.

[L33THAK0R]

Details:

• Source: Clean GOG Files
• Version 1.2.0.23
• Original Size: 11 GiB
• Final Size (Without MSC) : 5.17 GiB (Incl. installer)
• Final Size (With MSC) : 4.84 GiB (Incl. installer)
• Ripped Files: None

Internal Tools used:

• Xtool v0.8.9 (Codecs: reflate, zlib, xmemcompress)
• Srep
• Lolz
• Oggre
• MSC

External Tools used:

• None

Additional notes:

I'm very inexperienced with using xmemcompress for applicable use-cases, massive thank you to Razor12911 for providing the config (attached below), to process the "*.xnb" containers, other community tools that are able to parse other XNA titles using "*.xnb" containers, weren't able to with those compressed using LZX. Attached is said config. In comparison with other published results, there's a minimum of 640MiB in potential gains left on the table, alas I can't for the life of me figure out where though. As this is the first LZX-compressed XNA title I've approached, it's entirely possible I'm just missing something obvious.

XNB Config:

[Stream1]
Name=xmemcompress
Codec=xmemcompress
BigEndian=0
Signature=0x77424E58
Structure=Signature(4),Unk1(2),CSize(4),DSize(4),Stream
StreamOffset=0
CompressedSize=CSize - 14
DecompressedSize=DSize
Condition2=CSize>=256
Condition1=DSize>CSize

[Masquerade]

^^
I wrote this config a few years ago and it still holds up for XNB titles (afair I used it on Terraria)

[Stream1]
Name=xnb
Codec=xmemcompress
BigEndian=0
Signature=0x77424E58
Structure=Signature(4),XNBFormatVersion(1),Compressed(1),FileSize(4),DSize(4),Stream
CompressedSize=FileSize-14
DecompressedSize=DSize
Condition1=Compressed = 0x81

XNB files have a byte two bytes after the 4 byte magic which is always 0x81 if the data is compressed, I was using this to simply skip uncompressed data.

Beyond this, the real magic for xcompress streams lies in xtool.ini and the parameters that get passed to the exe file.

[Dunnowho69]

Originally Posted by L33THAK0R

Source: Clean Steam Files

Version 1.10
Original Size: 27.3 GiB
Final Size: 10.705 GiB (Incl. installer)
Ripped Files: Non EN. loc.

Internal Tools used:

Xtool v0.8.9 (Codecs: reflate, zlib)
Srep
Lolz
Oggre

External Tools used:
SFK
DELZORec
MParallel

Additional notes: Happy with how this turned out, a substantial improvement over my previous results, the approx. ~200 MiB reduction can be attributed to more effective processing of the Vorbis OGG audio, as well as tighter tuning for the lolz model.

How to set DELZORec for installer?

[Masquerade]

^^
Delzorec isn't compatible with FreeArc.

You can generate dunia lzo databases with XTool duniadb maker or bms2xtl.

[Dunnowho69]

Originally Posted by Masquerade

^^
Delzorec isn't compatible with FreeArc.

You can generate dunia lzo databases with XTool duniadb maker or bms2xtl.

Yeah found out about that. Using the xtool plugin now. For installation i just need the lzo2.dll right ?