I updated the ticket on macports.org with this change and others. The MLT port now installs for me!

Thanks. I saw your post and updated the Portfile on tracs. Did you also check that sox and jack were working. Also, I think you mean "The qimage MLT module only uses kdelibs on Qt4". I am currently testing and I propose to follow discussion here: http://trac.macports.org/ticket/18286

No, Dan was right when saying that QImage uses kdelibs for Qt3 only. It was used to add some extra image formats that are now fully supported in Qt4, so we don't need the kdelibs anymore for the Qt4 QImage producer.