Hi all Regarding HD content 720p 1280x720, i have two files. one goes for about 1 hour 43 minutes: - 2.49Gig, while is other one goes for 2 hours, 11 minutes and is an whopping 10 Gig Is this correct to anyone ? How can a mere hour or so be an extra 8 Gig ? when there both the same resolution ? Granted the 10 Gig one was exported from iMovie. The 10 Gig file extension is .mp4, while the other is .m4v (encoded with Handbrake).