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

[kj911]

Best compression methods from Stalker: Shadow of Chernobyl?? The game compressibble in smaller than 2-2.5GB's size? (with or without MP files. Multilang version installed size in has ~9.5GB's. Installer smaller than ~3.2GB with INNO only.)

Tested one gamedata archive file (*.db5), in few methods. This db5 archive contents extracted in specialized tools and extracted files compressed again into separated 3 archives and results its bigger than compress the one *.db5 file. Not understood!

File: gamedata.db5
Size: 677 500kB

CAB/LZX:21: 520 571kB
7z: 498 055kB
7z/PPMD: 529 581kB
SQX2: 492 547kB
DLZ only: 456 021kB
OGGRE+DLZ: 462 367kB

MSC only (BMP/DDSRAW/DXT=1): 550 356kB* (archive broken! Any data portions its missing??) --> Crunch in DLZ: 387 155kB (probably false...)
MSC only (DDSRAW=0, DXT=1): 677 377kB --> Crunch in DLZ: 478 327kB

Extracted the db5 file:

*.OGM: 68 290kB (6 file) --> DLZ: 59 064kB (Note: OGGRE+DLZ: 59 061kB)
*.OGG: 174 445kB (2052 file) --> OGGRE: 146 989kB
*.DDS: 446 886kB (1249 file) --> MSC+DLZ: 317 108kB / DLZ: 294 630kB
other: 908kB (17 file) --> MSC+DLZ: 103kB
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Total: 690 528kB --> 523 264kB / 500 786kB (WTF!)