mgrinzPlayer

I'm not jmacd. > The version which Iam using is 3.1.0 From where? Did you compile it? In this repo, since this commit https://github.com/jmacd/xdelta/commit/e1a0a2538ff9c5a7350562f844c67bfd639fa3f5, LZMA is not the default secondary...

You know that installers are probably already compressed (deflate)? xdelta works best on unencrypted and uncompressed data by design. If your installers are using deflate, try with precomp v0.4.3. Creating...

1. collect many files, about 200MB, EXEs, DLLs, some game files, some text files 2. compress them into zip, preset: fastest. Data01.zip 3. now, copy your collection, and change some...

xdelta3 doesn't care if input data is compressed or not, it doesn't care if it is compressible or not. It just works best when input files have many identical (byte...

I think xdelta3 "-S lzma" do not use big dictionary. Probably dictionary is 16MB, FastBytes=32, _10-11.msi.xdelta.7z_ - compressed with 7zip/max - **3.75MB** _10-11.msi.xdelta-SecLZMA_ - secondary compression "-S lzma" - **4.04MB**

djw has [those](http://xdelta.org/2007/11/xdelta-3.html): "Thursday, November 08, 2007, -S djw exposes secondary compression levels as -S djw1 .. -S djw9" What about LZMA compression levels? Is it max by default? Or...

I opened delta file (-S lzma) with 7zip, info window:  Found this: ``` C xd3_lzma_init (xd3_stream *stream, xd3_lzma_stream *sec, int is_encode) { ... int preset = (stream->flags...

"tried opening the -S lzma file in 7-zip 9.30 alpha, but it does not open" You can with 7zip 9.38 beta. Then you can check compression method. Which LZMA stream?...

``` -S none ```

I'm 100% sure that "-S none" worked in 3.0.8. You can try 3.0.8 xdelta3 version? (you can download it from https://github.com/jmacd/xdelta/tree/ee616b958d794c6714d117b22f0be6757b379d7e/xdelta3/releases)