don’t forget you probably have an option to export an aec file out of 3ds — I think there is atleast. Import the camera and the quicktime file and then use its alpha to separate the quicktime. The camera movement will sync up to the quicktime.
Its much less render heavy than the invigorator — when you get it into ae — but it’ll take more time to get it out if you want radiosity/post 3d effects — and if you send it out multipass you can tweak it.
I like the invigorator for some logo treatment — but if I need to bring in realistic multipass 3d I’d use the ae export.