1093i3511 [1] filed a deletion request for m4b-converter-git [2]: pretty old, script based on python 2.7 and mp4v2 v1.9.1 as of Jul 13, 2009. Latest github commit: Jan 3, 2011
There are much more recent alternatives available for m4b file conversion that are actively maintained and up to date. [1] https://aur.archlinux.org/account/1093i3511/ [2] https://aur.archlinux.org/pkgbase/m4b-converter-git/
