any filters for temporal clean luma only?

for some reason, a luma temporal clean is the only thing that combats the noise from my vhs captures, and c3d is the only filter that allows tweaking the luma distinctly from chroma, and well enough to tweak it precisely to get effective cleaning without ghosting but is there another way to execute a temporalsoften exclusively in luma, or similar filters that are faster than c3d?

luma=temporalsoften(whatever) mergeluma(last,luma)

No need for MergeChroma/Luma as TemporalSoften can filter luma and chroma seperately. Just set the chroma parameter to zero to skip chroma calculations. i.e. TemporalSoften(1,5,0)

hooray, and d'oh! thanks

.... You know, I even checked the help files to look at temporalsoften's parameters before I typed that reply, and still managed to forget about the chroma threshold. I feel like such a `tard.

Well, just because something has a seperate luma and chroma threshold doesn't mean that it can filter both seperately. This filters happens to do it though.