Yep,
If your NTSC Source is telecined (
Hollywood-Movie at 29.97fps) you should never use TmpgEncs internal Inverse Telecine routine, as its not well developed and SLOW.
Do install latest version of avisynth from avisynth.org and the "decomb filter package" from the external filters link at avisynth.org
Just a textbased script with an .avs suffix written using WIndows Editor for instance including following lines:
Avisource(D:\Your_Path_to\Your_29.97fps_AVI_File.a vi)
Telecide()
Decimate()
LanczosResize(....PAL Resolution out of FitCD or Moviestacker....)
AssumeFPS(25.000, true)
SSRC(44100)
If you got a good 23.976fps Movie Source, you just have to pitch up the sound and resize to PAL WITHOUT InverseTelecining!
Avisource(D:\Your_Path_to\Your_23.976fps_AVI_File. avi)
LanczosResize(....PAL Resolution out of FitCD or Moviestacker....)
AssumeFPS(25.000, true)
SSRC(44100)
Also do have a look at the OptimalScript V4 so you can change it using the essential lines as mentioned above:
http://www.kvcd.net/forum/viewtopic.php?t=7223