Quote:
Originally Posted by Freeshadow
I had working epub on even so small and old reader as an bebook mini so memsize isn't your problem; either is decomp speed ;the problem is that zopfli based tools as I tested them, don't allow to add unshrinked files to the archive (meta.inf in epubs) thus you can't CREATE epubs with zopfli tools. you have to take a traditionally created zip or other file containing deflate stringsand reshrink it with: advzip -z -4 -i 1000 $name.epub.
this operates only with the deflated sections WITHIN a file leaving the rest of a file (ANY file) untouched, and then all works fine.
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An ePub has little to do with this discussion. I was working with CBZ files which were images only. Basically, I came out of the testing with the belief that zopfli is too slow to be of use to me and the 5% increase in compression ratio was not worth the time to achieve it.
As for your command line, what is it intended to do? Advzip last time I looked used 7-Zip's implementation of deflate while using zopfli by changing the executable name to zopfli and removing the space between the -i and the 1000 generates a .gz archive containing the epub by default while for my test epub which is 44,060,303 bytes, the epub.gz file came out as 44,005,894 for a massive 53KB size savings.