CODEWITHSUNDEEP
batch-filecommand-linecompression7zip
fiberOptics
fiberOptics

Reputation: 7165

7zip Ultra LZMA2 compression

How can I convert this settings into command?

enter image description here

Here are the results:

// Manual Compression (see the image above)
Compressed Size: 12,647,451 bytes

// Ultra
7z a -t7z Files.7z -mx9 -aoa
Compressed Size: 12,676,886 bytes

// LZMA2
7z a -t7z Files.7z -m9=LZMA2 -aoa
Compressed Size: 14,237,515 bytes

I am looking here:
https://7-zip.opensource.jp/chm/cmdline/switches/method.htm

I am about to put this in a batch file.

Upvotes: 50

Views: 73296

Answers (5)

arn
arn

Reputation: 61

I think you are looking for a tool like this:

https://axelstudios.github.io/7z/#!/

In this online tool, you set your settings and then you get correspondent command line options and parameters.

Upvotes: 5

David
David

Reputation: 525

This command is creating for me the same output like the ultra configuration with the ui. I have found it in the documentation under examples. 560MB to 29MB (binary data with a lot duplicate files)

7za.exe a output.7z ./input -mx

Upvotes: 3

RAWDOM
RAWDOM

Reputation: 91

For those who are on unix system, this is how I achieved this. 

7z a -t7z -m0=lzma2 -mx=9 -mfb=64 -md=1024m -ms=on destination.7z Source

My source: http://manpages.ubuntu.com/manpages/artful/man1/7z.1.html

Upvotes: 9

tricasse
tricasse

Reputation: 1417

Your command line should be at least:

7z a -t7z Files.7z -m0=lzma2 -mx=9 -aoa

Note that you'll get better compression when using 1 or 2 threads, not 8. So, even closer to your GUI settings (ms : solid, d : dictionary size, mhe : encrypt header (file names), p : password)

7z a -t7z -m0=lzma2 -mx=9 -aoa -mfb=64 -md=32m -ms=on -d=1024m -mhe -pSECRET

Upvotes: 74

fiberOptics
fiberOptics

Reputation: 7165

It's hard to get the same result, but this is the best I can get so far: 

7z a -t7z Files.7z -m0=BCJ2 -m1=LZMA2:d=1024m -aoa

Upvotes: 12

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