Frame size discrepancy (Mac and FCP and Premiere Pro CS5)

I have some footage that shows up on my Mac as 1920x1080, via the "Get info" option.
But, when I open the footage(already in mov format) in FCP 7, the frame size is 1440x1080.
If I create a timeline with the 1920x1080 frame size and add the footage, it does not fit the full frame...
Also, I opened the same footage in Adobe Premiere Pro CS5 with the same results...
Why is this happening? Is the footage not 1920x1080? If so, why does the Mac read it as 1920x1080 and my editing software as 1440x1080?

P.S. I received a hard drive with the footage already in mov format, so I am not sure how it was transferred/captured onto the hard drive.

Thanks.