I have to admit I was totally wrong about this in the beginning. I thought I could just get a raw capture and denoise it to clean up the picture but I've seen that even the best denoiser will not help too much with dot crawl. It wasn't until I started using a dot crawl/derainbow filter at the top of my filter chain that I started to really see a clean looking picture emerge. I think it helps that I'm using the s-video from my laserdisc player now too. The comb filter in my usb capture is a 1 line comb filter which is hardly worth using anyway.

I would like to try the toot filter. I used to have it in my plugin folder several years and many crashes ago. Does anybody have it that would be willing to share it with me?

Here's the filter set up I'm using now. I might add the spatial dot crawl filter later too. This script allows me to capture in YUY2 and keep it in the same colorspace all the way down the filter chain without any resizing either.

raw=avisource()

decombed=raw.tcomb(mode=2,fthreshl=5,othreshl=5,fthreshc=220,othreshc=220)

ivtc=decombed.tfm(mode=5,PP=2,clip2=decombed.tdeint()).tdecimate()

vectors=ivtc.mvanalysemulti(refframes=2,pel=2,blksize=16,blksizev=16,overlap=8,idx=1)

denoised=ivtc.mvdegrainmulti(vectors,thsad=200,sadmode=1,idx=2).tweak(sat=1.1).levels(4,1.1,255,0,245)

return(denoised)

Btw. I tried the little test for rainbowing like you suggested and the only player that doesn't exhibit really bad rainbowing is the HF9G whilst using the s-video connector. It has some but not nearly as much as the other 2 laserdisc players. They all exhibit rainbowing pretty bad whilst using the composite outputs. Happily, tcomb seems to alleviate most of it.