I am designing content for a show next month, and I have a couple of questions of what I need to do.  We are projecting onto a large circle that
is part of the set.  When I design my content, video and stills, should I build
it in a circle, with black on the outside of the image, or is the image cropped onsite?  If I create a looping animation, does it matter how long I make the clip?  Would an 8 second piece work just as well as a one minute piece?
I will be creating all the video clips in final cut.  Should I just work on a DV
720 x 480 timeline?  When I do the conversion to mpeg, I have Compressor 3.02, and Sorenson Squeeze 4.5 suite.  Would either of these programs work?
Thanks for your help.