In my case:
Not working for dual ISO, yet.
I worked with 2 files from about 500 mb each one.
WHat I have to expect? A frame darkness and other one brightness?
It's not stable. If you add other file when the program is converting a preview task , collapsed (I have a Mac Pro 2012). When you press in and out appear to work very slow.
This my result of course, maybe it's a minor problem.
Thanks, is a good idea!!!! go foward!