[Mainconcept compression larger then 1080p]

I know this might be a simple question that might be better suited elsewhere but does anyone know how to process a video that is larger than 1080p in premiere?

[Video dicing for two displays - help?]

I am trying to take a video piece that is 3640 that is to be spanned across two displays that are both 1080p projectors.  In my blend area between displays do I need to create a feathered edge to compensate for the blending or does Watchout do this automatically.  I don't see this on the stage in the production machine but I was curious if there is a difference between what I see on the production machine and what the display machine will give me?

 

Any help would be appreciated.