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Originally Posted by github
However both setups can not to pass in like xtool:mzlib+zstd since + is parsed by freearc, but I guess it's rarely needed to pass in to methods.
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This true.
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I asked about passing in the -d option, since there are up to 10, just saying to test it so I used 3 or 5, and in my case I do need to use -d3 or -d5 to get the same result as xtool 0.12
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I wonder though, A depth of 3-5. I asked before if there is such data you have on hand because this is basically the same as having data, compress it using zlib, the output, compress that using zlib, do this at least 5 times. That's what depth is.
A depth of 1-2 is usually enough on everyday files such as pictures and documents as these are usually shipped in a zip file, that zip file is compressed using deflate and if it contains pdfs or png images then, that's when you need to use depth otherwise, don't touch it as you'll be increasing precompression time unnecessarily and have no gains in ratio.