I tried this. I recorded a (PAL) DV movie in QTPro. The screen size of the resulting .mov comes out at 384×288, which is an non-standard DV dimension.
I import it to Final Cut Studio. The pixel dimension is displayed in the browser as 384×288. I load it to the viewer. The viewer displays correctly, but blown-up. On hitting play, I see full motion in the viewer (but at half-resolution), but not on the external monitor – this only updates on stop – ie no motion playback at all.
This next bit is very strange: if I edit the clip into a DV-PAL sequence, the canvas and external monitor displays only the top left quarter of the original pictures, in the centre of the screen.
If I adjust the original movie dimensions in QT Pro, to 720×576, everything is fine. Of course there is no timecode associated with your clip – this is A Bad Thing as we all know.
So in my experience, it is a bad idea to use QT Pro to do recordings for use in Final Cut.
Hope this sheds some light!
Tom Ackroyd