29.97 Fps -> 25 Fps

[LordDethstar]

I'm not sure if this is the right forum, however it appears to be the best match.
I have a video file that is 29.97 FPS. However I have come to the conclusion that it was originally 25 FPS and a few frames have simply been duplicated. Unfortunately playback is not that smooth, so I would like to convert it back to 25 FPS by deleting the duplicate frames. Is there any easy way?

[hakko504]

This script will do the job.

function NTSC2PAL(clip clip)
{
LoadPlugin("decomb.dll")
return clip.Decimate(cycle=6).Assumefps(25)
}

Just remember to stretch the audio manually by a factor 30/29.97