Guys!
How can you write such an incorrect information!
I have tried the following:
32bit TGA with alpha (720×576, the station bug)
Keyed over a background, IT IS REAL TIME
I have tried to blur at max level the background (very CPU intensive process) STILL REAL TIME.
Please check that you have FCP selected as render engine in the preferences.
This was possible with FCP 4.5, I expect even more from version 5.
Alessandro.
(test system FCP 4.5, G5 dual 2G, OSX 10.3.9, 1/2 XRAID 1Tera disc space)