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7zip with High compression ratio Rate Topic: -----

#1 User is offline   sam1984 

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Posted 06 January 2012 - 03:26 AM

Dear friend,
I have 7zip file, Extract it and compress it again with 7zip GUI.I choose ULTRA \ LZMA \ 64 \ 64 \ solid option in 7zip GUI.after compression I compare it with original version.my 7zip compression ratio is about 95% but in original version is about 82%.
I see property of original 7zip.the method in original version was "LZMA BCJ2" and "solid +" and "Blocks 2" but in mine version it is "LZMA" and "solid -" and "blocks 1"
so my question is how and with which switch i can change my compression method?i read help of 7zip but it seems that switches for bcj2 dont work in GUI.

#2 User is offline   MagicAndre1981 

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Posted 06 January 2012 - 08:50 AM

set LZMA2 and use a higher dictionary value.

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