Not sure if this helps, but opv/roba is implemented in ccefront and source is available.
http://forum.doom9.org/showthread.ph...light=ccefront
Just did a few small test encodes with HC, Quenc and cce 2.67 all turned out great. Not tested batch yet.
Very nice app and great work
And +1 for batch encoding multiple sources to one dvd, but this would perhaps include some menu generating function?
One q though, have you considered the free version of muxman as a possible replacement for dvdauthor etc?
oh and any chance of choosing to display or not to display the splash screen?, and editing the avisynth automatic defaults?