Compression test on unreal engine 3 texture file *.tfc
 

Original file Textures.tfc = 1.0Gb

Textures.tfc + lzma = 712mb

Later used UELR to decompress the *tfc file

after processing with UELR new file size= 1.37G

Test:

UELR(1.37G)+lolz =503mb (took 50min to compress)

UELR + srep + rz = 528mb

UELR + precomp + srep + lzma = 566mb

UELR + lzma = 573mb

UELR + srep + lzma = 575mb ( :confused: 2mb more)

lolz is the best compressor, but took very long to compress.

Try increasing the dictionary in lolz, x1, x2 modes and tt4,8,16. Also play with UELR's options.

2 mb more because LZ match length <= lzma dictonary
:confused: :D

I am new to this. I don't know much. I tried all the options in UELR, i get the same file size of 1.37Gb.

u = unpack archive
ulv = unpack lossless recoverable blocks in verbose mode.
b=brute force parameters
x= unpack x64 ue headers

could u suggest me any parameter?

Sorry, i was thinking about OGGRE when i wrote that. You could brute force every option in lolz but i personally think it's a waste of time considering how big the file is.

When i tried Unreal engine decompressor on it.. i found that .tfc file was encrypted. Can we remove encryption from that file?

For Compressing Unreal Engine Files for e.g .tfc, .upk, .umap etc etc

I have found that by using uelr+srep+lolz given me the compression rate was slightly strong than using uelr+srep64+lolz
So my opinion is to use uelr(default)+srep( -m3f -ia- -l512 )+lolz(-d256mb -tt8 -mc1023) on these unreal engine files

But if you want lolz to fire up the speed then use lolz(-dto0 -tt1 -dm00 -mc1023)

Note: These are outdated settings as we have new tools since from 2 months, i am pretty busy to try em

Thank you psycho_rage i would try them, i think -m3f uses large amount of RAM ~8gb. Can i use -m2f ?

-ia-: disable I/O acceleration in order to reduce memory usage (-m5 only) :)

I tried what u suggested. I used the faster method on srep file (1.12gb), finally it reduced to 495 mb (8mb lesser than before). I tried the other one and the file size was almost close to 490 mb or something, i closed it as it took more than an hour to compress..

Will LZO compressor do any better?

try it but i think its of no use on unreal engine files

you are right in some way but sometimes it reduces the compression ratio to some percents on different file formats

might be but i think no it will not but you can try yourself to see what it will give

Umm.. how can i add lolz with the above parameters to my arc.ini ? Simply copying lolz.exe to my bin folder in freearc directory and adding the lines to arc.ini work?