Current compressing techniques guidance

[Spexxos]

thats a whole lot of new information. thank you guys for that.

So the general approach for data of unkown compression would be to run a scanner like GFS over it. (Are there any other scanners avaiable besides GFS?) Then figure out what you have to do afterwards but here in lies my problem.

@78372 About xtool vs precomp. Precompv046 gave me better results than xtool on my testfiles (Witcher1Savegames) I probably should scan the files so see what they are made of but for now I am wondering if my xtool settings are wrong. To be honest I have no clue how to properly configure xtool/arc.ini

[78372]

Originally Posted by Spexxos

@78372 About xtool vs precomp. Precompv046 gave me better results than xtool on my testfiles (Witcher1Savegames) I probably should scan the files so see what they are made of but for now I am wondering if my xtool settings are wrong. To be honest I have no clue how to properly configure xtool/arc.ini

From precomp 046, it's a complete compressor, not only a precompressor, so it will give better result on small files and when you have compression on. To use xtool, you must use xtool+srep+lzma(or xtool+srep+lolz) to get better ratio, else it will just inflate files, not compress, plus xtool isn't complete yet, it's a beta tool, it has bugs.

[Spexxos]

Originally Posted by 78372

From precomp 046, it's a complete compressor, not only a precompressor, so it will give better result on small files and when you have compression on. To use xtool, you must use xtool+srep+lzma(or xtool+srep+lolz) to get better ratio, else it will just inflate files, not compress, plus xtool isn't complete yet, it's a beta tool, it has bugs.

My bad I should have been more detailed. I used precompv46 only as a precompressor, so with these parameters ("precomp -cn -intense").
The file that precomp delivered was about %10 bigger than the one from xtoo. Which means precomp found more to decompress?

Aferwards I put both the testfiles from precomp and from xtool into srep393a (-mx), then I proceeded to compress them with 7z(7za.exe a -t7z -m0=LZMA2 -mmt=1 -mx9 -md=1536m -mfb=273 -ms=on -mqs=on)

Result is the precomp testfile is half the size of the xtool one. That makes me think I have to configure xtool differently.