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

[Webster17]

Call of Duty Modern Warfare 1,2 and 3 only
Repack type: Extract and Rebuild
Basically it restores .wav from .ogg and rebuilds folders to .iwd files
.ff files = Precomp+whatever you want
.bik files = binkpack
.iwd files = same as above
.iwd sound files = oggenc(below)
Rip Multiplayer = see below
eg. Call of Duty Modern Warfare 3 Ripped Multiplayer
11.9 GB = 5.85 GB

For audio its a batch process, Use 7z to extract .iwd files with sound files in it. Start from bottom to top. Then compress .wav files and later delete them, but before deleting make sure there are as many .ogg files as there are .wav files. If there are for eg. 100 ogg files but 102 wav files it means oggenc wasn't able to compress 2 files, so you have to manually check in each iwd folder for these 2 files and make sure you don't delete them. Now copy zip.exe to "main" folder where other iwd files are located and oggdec in game folder. Create a batch files using notepad and type the below code

This ones for Decompressing . ogg to .wav, you can also use this code to compress .wav files.
for /R main %%i in (*.ogg) do oggdec.exe -Q "%%i"

This one to only delete files with same extension like .ogg
del /f /q /s engine\*.ogg >nul

After restoring the wav files, this code will compress the folder back to .iwd file, just replace iw_15 to the files you extracted, and you have to copy the entire code below for each .iwd file you restore, and after restoration this code will automatically delete the folder as well
cd iw_15
..\zip a -tzip -r iw_15.iwd -mx1
move iw_15.iwd ..
cd ..
del /f /q /s iw_15\*.*
rd /q /s iw_15

Now after putting the batch file, oggdec and zip.exe
To delete multiplayer Go in Zone folder and delete every file with _mp, _mp_ etc. but be careful and double check everytime, also you can delete mp audio files, in extracted iwd folders check for folder mp and delete it, thats it.

Have Fun.