i'd like to ask igor for a tool that it would test all the LZMA setting with filters.. on different file types.. the result would be saved into file that will be sent back to Igor for future development... think of it as best setting chooser for each file type.. or combination.. (LZMA_trainer..)
hmm i did such a tool in perl once.
If anyone is interrested i could look for it.
i think its essential for 7-zip development.. as i found different setting to reach optimal compression on different types.. but it changes very often .. so IMHO its a must in 7-zip future..
please Igor i need your post here
I don't think that such tool is too important.
All settings in LZMA provides almost same compression ratio. So in most case it's enough to use default settings.
.. on my testing.. i have a setting for DWG14 and another one for DWG2000 and another one for DWG2004 so applying one setting for all it not best way .. and same heppened with different version of PDF
Ok, post results for these settings here.
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