Saving iMovie with no loss in Quality

I have iMovie HD 6.0.3 in OS10.5.8. When I import a 1280x720 Motion JPEG into iPhoto and play it as a .mov video in Quicktime it plays as a large size image at full resolution. When I drag and drop it into iMovie, do nothing to it, but then export it as Quicktime/Full Quality, it comes out at the same size file, but plays as a much smaller file maybe a 640 x 320. How can I use iMovie, clip segments, mix clips, or other and then export at the full 720 dpi resolution?

It all depends on two things:
1) The type of iMovie project you created prior to importing. You should have created a 720p project.
2) The type of export you perform from iMovie. I suspect you selected "Full Quality DV". Now, DV is always Standard Definition. You should have selected something else, probably in the "Expert" settings.
Speaking of iMovie '09 (and '08 and '11): They all use "single field editing" for "interlaced" material. (Which means they work fine with progressive material but loses half the resolution for interlaced material.)

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    www.crystalclearvoiceovers.co.uk

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    Message was edited by: Coolmax

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