Help with SWARMING COLOR PIXELS

[nightrhyme]

Trying to make a backup of a Concert.
But I'm having problems with something best described as SWARMING COLOR PIXELS around certain objects
(See sample avi. Notice the purple light swarm around legs)
Sample.avi (http://home19.inet.tele.dk/null/Sample.rar)

The swarming color pixels doesn't exist in source. Don't know how to cut VOBS so can only show you a screenshot of the source: Source.Screenshot.png (http://img203.echo.cx/img203/3497/sourceshot4tr.png)

XviD settings: Single pass, Quant-2, Matrix: HVS-BEST, VHQ B-Frames. Quantizer restrictions: 2-31, Motion Search Precision: 6, VHQ-MODE: 1, Croma Motion, MAX Con.B-Vobs: 1, Quantizer ratio: 1, Quantizer Offset: 1

AVS.Script (GordianKnot Default)

# PLUGINS
LoadPlugin("C:\PROGRA~1\GORDIA~1\DGMPGDec\DGDecode.dll")
LoadPlugin("C:\PROGRA~1\GORDIA~1\AviSynthPlugins\UnDot.dll")

# SOURCE
mpeg2source("E:\Sebastian\Test\t.d2v")

# DEINTERLACING (2)
KernelDeInt(order=1,sharp=true)

# CROPPING
crop (reconstructed, don't remember)

# RESIZING
LanczosResize (reconstructed, don't remember)
# DENOISING: choose one combination (or none)
Undot()

Deinterlaced the source with KernelDeinterlace. Also tried encoding the source interlaced to see if that was the problem. But the SWARMIN COLOR PIXELS remained.

Any advice will be greatly appreciated.

//Thanx in advance

[Didée]

Your search term would be "rainbows" and "rainbowing" - a very common problem, and nasty as well.

Oh, and the deinterlacing looks ugly. Use lower thresholds. Also try TDeint alternatively to KernelDeint.

[nightrhyme]

Thanx for reply.
Will do some reading on the recomended things and see if I can figure it out.

[Mug Funky]

btw, xvid supports interlaced encoding. this will also help the rainbows - they usually cancel out over 2 fields, so on playback you wont see them unless you've got very fast eyesight or you hit pause.

however, most concert DVDs come deinterlaced on the disc (usually badly). this is an abhorrent practice and i really wish this current fad in video editing would hurry up and die. if your disc is pre-deinterlaced, then you have my condolences.

rainbows are not very easy to kill, unfortunately. once aliasing is introduced, it's nigh on impossible to distinguish it from actual details and thus remove them. i'm trying to think of something that would work, but a) i haven't got many rainbowed sources, and b) i'm kinda lazy.

[nightrhyme]

Thanx for reply.

I actually tried encoding the concert interlaced. However it looked just as bad and the rainbowing remained. De-Interlacing is necessary.

I tried TDient but that looks the same as KernelDient to my eyes and has no effect on the rainbowing.

Then I stumbled on Shodan's Derainbow function Some kind of script.
However I have no clue on how to use it. I tried pasting it in the AVS-SCRIPT but it had no effect at all.

So now I'm experimenting with encoding the concert with CCE. I hate DVD though but I guess I'm just not wise enough to encode the concert to decent XviD :rolleyes: