My intention was to get something in the 23.976fps to 29.97fps range and to slow it down (if necessary) to the same speed as rest of the movie after deinterlacing and decimating (23.976fps), which all works perfectly well except for the snippet part.
If I wind up with a 60fps part, I can of course still slow it down to 23.976fps but then it would be a tad long.
Is there really no way to get this to run smoothly at 29.97 fps? *sad puppy eyes*
What I did was this:
v1=Trim(0,314175).Telecide(guide=1,post=2,vthresh=25).Decimate(5) # the movie
v2=Trim(314381,315064).Telecide(guide=1,post=2,vthresh=25).AssumeFPS(24000,1001) # credit roll; I also tried guide=2
v3=Trim(315065,318853).Telecide(guide=1,post=2,vthresh=25).Decimate(5) # more credits, but no rollin'
UnalignedSplice(v1,v2,v3)
Everything is OK, I even get the intended number of frames, only v2 is a bit jitterish