Actually, it sure as hell did fill it up. I'm not big into digital media, so I can't quote the real specs, but my machine is a late model MacBook Pro using the stock camera, filmed with iMovie at what are probably default settings.

And the file limit was certainly 30GB, or in the neighborhood. Trust me. I was shitting bricks when it happened....waiting to upload a file, watch it bounce because it's too big...rinse, repeat.....