I had this same issue in the last couple of beta versions. If I choose a size other than original Starlight sharp will make a 0KB mP4 file and fail. My output is set to make a ProRes mov.
If I choose original size it makes a file that is 960x720 but the quality is not nearly as good as it was in the original betas.
My source file is a 768x576 4x3 file deinterlaced by QTMGC into a ProRes Mov. logsForSupport.zip (938.0 KB)
In the windows version of Topaz Video 1.0 all my exports failed with the following error: “Some parameter(s) may not be supported by the codec. Check FFmpeg command. - Current container (file extension) is not be supported by the codec. Try changing the file extension.”