I've been putting a lot of thought into why some of my videos seem to flicker during right to left or left to right movement. I found a perfect example: A Scooby Doo (compliant VCD) episode where the camera goes from left to right and there is a fence in the background. The individual pickets (they are X shaped) seem to flicker. IT has a distinct pattern of 3 progressive frames followed by 2 interlaced ones. I took the mpeg file I had ripped off my VCD with isobuster, and performed all kinds of IVTC operations on it to see if I could fix it. I then gave up, figuring the half vertical resolution was negating anything I did to try to help things. I then captured a scene from Casino (@352x480) in which the camera (pans?) from left to right very quickly. You can distinctly see a pattern of 3 progressive frames followed by two interlaced ones.

*Stay with me, I'm going somewhere with this*

I converted the scene as 352x480 mpeg2:
1] Normal 30 fps
2] Avisynth telecide filtered but not decimated
3] Avisynth telecide filtered and decimated with pulldown flag added

When I play these back on my standalone player, I stepped through the frames indivdually. On the normal 30 fps clip, I get 4 progressive frames followed by a duplicate. On the "telecided" clip but not decimated, I get the same thing. 4 frames and a duplicate. Only on the last clip do I get no duplicates. I am certain I labeled these files correctly. I went back and opened each one with virtualdub to confirm I didn't mix them up. Anyone have any thoughts on that?

*edit* I did some more fooling around. I tried resizing my Scooby Doo VCD to 352x480 and then trying it again. I also resized one of my 352x480 clips to 352x240 and they both showed the 3:2 pulldown pattern on my TV. Looks like on my player, anything that was XXX x 240 at any time is doomed to the 3:2 look...