towne32 said:

Valeyard: do you know if there is an avisynth script available that does the equivalent of vidfire? Would be curious to try it on the underwater menace 2 episode now that the DVD is cancelled. Have a fairly decent quality copy of it.

Here you go, I just tested this script and it works. Please note this assumes you don't want to resize the video (e.g. going from 576p to 576i),l I used SVP for the frame-doubling:

even=last.converttoyuy2().separatefields().selecteven()
threads=10
super_params="{pel:2,gpu:0}"
analyse_params="""{block:{w:8,h:8,overlap:3},
main:{search:{coarse:{distance:-10}}},
refine:[{thsad:200}]}"""
smoothfps_params="{algo:21}"
super = SVSuper(super_params)
vectors = SVAnalyse(super, analyse_params)
SVSmoothFps(super, vectors, smoothfps_params,url="www.svp-team.com",mt=threads)
odd=converttoyuy2().selectodd().separatefields().selectodd()
interleave(even,odd)
weave()
converttoyv12()