Log in

View Full Version : Help with really bad horizontal noise (pic inside)


CraigBjorn
8th January 2005, 03:50
Obviously this can't be helped a whole lot, the original recording was obviously pretty bad, but I think some of the noise that creates those horizonal bars of color can be remidied and maybe some of the chroma noise on his face if I'm lucky.

http://dougk-ff7.net/~schwa/screen.png

I've tried some denoisers like remove dirt, but none of those seem to get rid of the horizontal lines... and I don't mean the big white lines... I know those will be almost impossible to fix.

Ne ideas?

State of Mind
8th January 2005, 13:40
I think you'll need to buy a new VCR and clean that tape as best as you can and see if you can get a better result. I don't think even AviSynth could fix that to make it look too much better. I could be wrong you know. Hell, maybe someone will see your image and decide to write a filter to do exactly what you'd like to do. Looks like you need some alignment in there too.

CraigBjorn
8th January 2005, 20:07
My VCR isn't the problem... that's the annoying part. That's just how that one tape looks, I'm going to see If I can clean the tape itself, and see if that helps though.

zilog jones
8th January 2005, 20:14
If you're using a pretty standard VCR with composite connections, capturing twice and then combining the two videos with Overlay or Layer or something can greatly reduce chroma noise. Well it works for me anyway. Though I see how that can be really annoying with long captures...

scharfis_brain
8th January 2005, 20:17
try the following approach
(I never tested this, only read about...)


avisource("blah.avi")
assumetff() #or bff()
separatefields()
turnleft()
descratch(parameters)
turnright()
weave()



search for fizick's descratch.dll