What’s strange is that you have wodim installed. wodim is part of the cdrkit package, which is a fork of Jörg Schilling’s original cdrtools.
Manjaro and Arch both use the original cdrtools package by default, and the cdrkit package is neither in the Manjaro repository nor in the AUR. It is most likely conflicting with cdrtools, and so I’m curious as to how cdrkit ended up on your system.
I do know that several distributions use cdrkit instead of cdrtools, as a result of a licensing conflict between Jörg Schilling and Debian. In fact, I think cdrkit was developed by Debian, and from there it has made its way into all of the *buntus, as well as into Mageia, OpenMandriva and other non-Debian-derived distributions.
cdrkit does indeed require one to be a member of the cdrom group, which is called optical in Arch and Manjaro. cdrtools does not require this.