Stock Footage - frame rates
 

Question, Got a project in Vegas 7, 24fps, want to purchase a stock footage clip of the earth, it's offered at 30fps (720x486)or 25fps PAL (720x576), I'm doing an NTSC widescreen project shot with the DH100, what's better to go with? There will 24fps footage over the top (greenscreen), I just don't want any jitter. Thanks!