Not sure if anyone else has had this. I have a pure interlaced 29.97 fps movie. I was trying different deinterlace filers to see which gave the best results for kvcd3 resolution 528x480.
I tried FieldDeInterlace, Bob and TomsMoComp filters to do comparisons. The sample was supposed to be 2m 20s for this movie but when I use Bob to deinterlace the sample becomes 1m 10s

The movie does not seem to look sped up but Sampler is clearly taking half the frames for each segment of the movie.
The other deinterlace filters don't seem to have a problem. I am calling the deinterlace filter just after the Mpeg2Source line in my avs script and Sampler at the end. This also happens if there are no other filters in between.
I ended up using a res of 352x240 for this rip which deinterlaces naturally but was just curious to see if anyone else has had this problem.