Filtering side effect?

[Inaaca]

When I put my footage through my filtering script and export it via virtualdub, I'm getting a subtle side effect that I don't really like. It's only very noticeable in long fades, but there's a kind of flickering, striping effect going on in the color. This only seems to happen when I put it through scripting. I noticed it right away, though casual amv watcher friends of mine didn't pick up on it until I pointed it out..

Even so, I'm wondering what might be causing it and how I could avoid it. I'd like to eliminate any problems like this, particularly for contest submissions.

Here's a screenshot of the problem during one of the many slow fades in my video. The effect is especially noticeable in her skin and collar in this shot.


Also, here's my script:
I also tried exporting another version without mftoon because I thought that might be the culprit, but it didn't make a difference with this particular side effect.

AVISource("F:\Sean\Myvideos\Saikanogoodbye\final\GoodbyeBpreview8b.avi")
ConvertToYV12()
deen("a3d",4)
temporalcleaner()
mftoon()
Tweak(sat=1.2)
ColorYUV(gain_u=15)
Crop(8, 8, -8, -8)
LanczosResize(720, 480)

Thanks in advance to anyone who lends their input.

[Kariudo]

I'm gonna guess that it's vdubmod's doing

Go to Options -> Preferences
Change Output color depth from "Fastest (16-bit)" to "Match Display Depth"
Click Save

[Zarxrax]

It also may be temporal cleaner.

[Ryle_Caste]

Yes, it's temporal cleaner's doing as I've had such side effects when I used temporal cleaner in some of my tests. I should probably replace it with FluxSmooth.