DVCPro HD, 1280x1080, 29.97, upper field first. That would be the codec and horizontal & vertical resolution of your video footage. If you need transparency, make it either the PNG codec or ProRes 4444.
-- OR EVEN BETTER --
Work in a 1920x1080 59.94i ProRes timeline and make the graphics 1920x1080 29.97, upper field first. Need transparency? The ProRes 4444 codec would be the way to go. That way, you could at least play everything back, but you'd still have to render on export or before going to tape.
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA