Is this noise removeable?

[joseph5]

Is this noise removeable?
http://img75.imageshack.us/img75/298/noiseqi1.th.png (http://img75.imageshack.us/my.php?image=noiseqi1.png)

It's from a VHS tape. It's not static, the white spots change from frame to frame.

Thanks in advance.

[JohnnyMalaria]

Before trying to correct it digitally, I'd check the tracking of your VCR's heads and also clean them.

Is it mainly at the top/bottom?

[joseph5]

It appears only at the top. I cleaned the VCR's heads, but the problem seems to be the tape, since other tapes in the same VCR don't have this problem.

[davidhorman]

Could you post a small sample, say a second's worth of that cropped area?

David

[joseph5]

Here it is:
http://www.savefile.com/files/541659

[davidhorman]

Here's a really quick attempt:

a=trim(clip,1,0)
b=trim(clip,0,-1)+clip
over=overlay(a,b,opacity=0.5)
clip2=overlay(clip,over,mode="darken")

a=trim(clip2,1,0)
b=trim(clip2,0,-1)+clip2
over=overlay(a,b,opacity=0.5)
clip3=overlay(clip2,over,mode="lighten")

stackvertical(clip3.crop(0,0,720,48),clip.crop(0,48,720,480-48))

It's not perfect, but neither's the source ;) A gradual blend would be much nicer than stackvertical, and I'm not sure what will happen at a scene change.

David

[joseph5]

Thanks a lot.
Which plugin do I need to make the "gradual blend"?

[hatte]

MaskTools' mt_Merge with non-binary gradual mask.