Removing 4:2 Pulldown?

This post was published more than a few years ago (on 2004-10-30) and may contain inaccurate technical information, outmoded thoughts, or cringe takes. Proceed at your own risk.

Calling all video gurus: Help!

I have a few clips that I've got from a stock tape that exhibit a weird pulldown pattern. The footage looks looks to be originally shot in 25p (such as european film might be), and then converted to NTSC 30i in a 4:2 pattern, so the frame progression goes like this:


Has anyone seen this pattern before? Does anyone know how to remove it? Conversion to "PAL proper" is not required--- all I need to do is extract and reconstruct that D frame, and get the clips back to a 25p frame rate.

I have After Effects, Final Cut Pro, Motion and have access to Combustion. I would also be willing to pay for a moderately priced plugin or helper application if it'll do the deed.