The SDL customer in mlt default breaks on a X dependancy that isn't in their library. Adding a -lX11 to the makefile works. But I wonder why sdl-config --libs doesn't give back -lX11.
*** Bug 150389 has been marked as a duplicate of this bug. ***
Please reopen bug when you provide necessary info. For example the exact error and steps to reproduce. Then emerge --info. I checked and I can emerge mlt with USE=sdl