On 2016-11-21 20:48, Pierre Rudloff wrote: >> Hello Pierre, >> >> Could you please share the mozjpeg Debian package sources (with >> debian/control, >> ... files)? For example as a branch in github? That will simplify creating a >> package to play with for me. >> >> Also I wonder what exactly the conflict with the standard libjpeg leads to. >> Does >> it mean that if mozjpeg is installed to /usr/local subtree it will interfere >> with software that uses libjpeg? >> >> Many thanks in advance! >> > Hello, > > Sorry, I don't have the source anymore (and it has been removed from mentors) > but it is pretty easy to build. > > IIRC mozjpeg installs its own libjpeg.so library so it can't be installed > alongside upstream libjpeg.
Many thanks for the information! The question is: if I need to install mozjpeg together with libjpeg, what are the options? Do I need to change the prefix to /usr/local for mozjpeg, and then use $ LD_PRELOAD=/usr/local/lib/libjpeg.so jpegtran -copy all <from.jpg> <to.jpg> ? How have you played with it? Also if I may ask you, what options are meant to be for maximum compression? I see that "-optimize" and "-arithmetic" are mutually exclusive... I would assume that compression should have a mode "try all possible". P.S. Just discovered that non of modern browsers support arithmetic-encoded JPEGs https://bugzilla.mozilla.org/show_bug.cgi?id=680385 which makes "-arithmetic" option non-attractive. -- With best regards, Dmitry