README

This archive contains two precompiled DLL's for 7-Zip v17.00 or higher.

Installation

1. download the codec archiv from https://mcmilk.de/projects/7-Zip-zstd/
2. create a new directory named "Codecs"
3. put in there the files of the Codecs-ARCH.7z archiv to your Installation
   • normally, the x32 should go to: "C:\Program Files (x86)\7-Zip\Codecs"
   • x64: version should go in here: "C:\Program Files\7-Zip\Codecs"

Usage

• when compressing binaries (*.exe, *.dll), you have to explicitly disable the bcj2 filter via -m0=bcj
• so the usage should look like this:

7z a archiv.7z -m0=bcj -m1=zstd -mx1   ...Fast mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=bcj -m1=zstd -mx..  ...
7z a archiv.7z -m0=bcj -m1=zstd -mx21  ...2nd Slowest Mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=bcj -m1=zstd -mx22  ...Ultra Mode, with BCJ preprocessor on executables

License and redistribution

• the same as the original 7-Zip, which means GNU LGPL