How do i get rid of this DVD dot crawl noise?

[Master Tape]

I originally made some DVD recordings many years ago and notice this shimmering dot crawl which is quite distracting. Recorded on my old combi unit hooked up to cable tv box via scart lead, so not sure if it's analog interference, MPEG2 artifacts, or both.

You'll notice it on the greens on this video.

[Sharc]

Yes, it is Dotcrawl of composite video, caused by the chroma spreading into the luma.
You can try the various Avisynth filters and see what helps best without damaging the picture too much.
http://avisynth.nl/index.php/External_filters#Rainbow_.26_Dot_Crawl_Removal

A simple but effective fix is to downscale the width to say 50% and then upscale it to the original width. One will loose some sharpness though.

LWLibavVideoSource("Video.mp4")
bilinearresize(width/2,height)
spline36resize(width*2,height)

[Master Tape]

Ah i guess i would have had to have my cable box set to output RGB in the settings, otherwise was stuck with composite!

Nice trick. I've used that before for herringbone noise, but didn't think to use it with Dotcrawl!

FFMpegSource2("Video.mp4")
QTGMC(preset="slower", matchpreset="slower", matchpreset2="slower", sourcematch=3, tr1=2, tr2=1, NoiseTR=2, sharpness=0.1, border=true)
nnedi3_rpow2(2, cshift="Spline36Resize", fwidth=400, fheight=576)
nnedi3_rpow2(2, cshift="Spline36Resize", fwidth=720, fheight=576)
Crop(0,0,-6,-0)
Unsharp()

[timtape]

An s-video connection would have worked also. I've found composite is fine when used as intended.