OK I've added some more details about the various releases I'm working with, as well as the fact that my release is NTSC (which I forgot to mention here initially).

You_Too said:

By the way, by Hybrid, do you mean like layering Gkar and TB on each other to get more detail out of them?

Well the 'hybrid' name was basically just referring to the fact that I was using more than one copy of the SE releases (and the audio) to produce one finished film, rather than trying to extract more video info by compositing and so forth. However, that may be an avenue worth pursuing if I can figure out a good way to do it (and if it will produce any appreciably better results).