Hi Everybody,

I'm having some trouble with iMovie's zoom feature--clips are getting grainy *really* quickly. I am using HD video (although not BluRay) of a Disney film and even zooming in 200% is looking grainy on a small computer monitor. Naturally, the quality of the mp4 is such that it looks great being played on a 72" flatscreen, so I'm confused as to why the image quality is so sensitive to zooming. Please advise!