Most of the Feedback threads should say so. I'm using the Faces set, as my Def. Col. set is flawed.
"I’d love to know what you are doing for IVTC and if my frame counts could be put to use to allow your work to be perfectly deinterlaced I’d LOVE to participate!"
I did it manually in VirtualDub. Out of three separate captures, there were only two places I had to find a new cadence within the capture. Once, where I had a dropped frame (and I made a new capture from that point on), and between lowering an R2 droid into an x-wing, and Luke saying goodbye to Leia. Everything else IVTCed perfectly. No math was necessary.