reduce analog noise

[cd090580]

Hi,

I'd like to convert some old music videos that I have on VHS to DVD.
I capture at 720*576 or 352*576.

The problem with analog capture is that noise is quite high (and even more when old music videos are converted).

So I'm looking for filters (preferably fast) for avisynth or virtualdub that can reduce noise. What's the best: spatial soften, temporal soften, spatio-temporal or simple noise reduction ?

PS: I can't use these filters: Convolution3D, PeachSmoother, STMedianFilter, Deen

Thanks.

[lordsmurf]

http://www.digitalfaq.com/restoration/video/videorestore.htm

[cd090580]

This guide don't give any filter name, only tmpgenc is mentioned

[johns0]

Might want to try this filter .

[petar]

I've had very good results with the flaXen VHS Noise Reduction Filter for VirtualDub. Check the VirtualDub website. There should be a link to the filter somewhere.

[deckard8]

I've used practically every filter there is to clean up noisy video, but I still find Virtualdub's built-in noise reduction the best when capturing video and I can use it in real time as I capture.

[cd090580]

Might want to try this filter .

This is the link for the Optimized version (it won't work because of SSE) and I can't find the original version.

So I will try it with Flaxen VHS or VDub internal denoiser to see the results.

[trevlac]

I think this is the original 2d cleaner

http://home.earthlink.net/~casaburi/download/index.html#2dcleaner

[Thorn]

I've had pretty good results in VirtualDub with a temporal smoother (for jitters and rapid snow - improves quality between frames) and the smart-smoother for the slower snow (to increase quality within the frame). TMPGenc doesn't seem to give the same quality results, and has more limited filter selection.

The most important thing is not to overdo it... you can get rid of all noise by blurring it so much that people look like blobs, but that's not really an improvement. Remember that some of the noise is more evident on the PC than the TV - so if you filter the hell out of it it might look TOO processed on the TV. Make sure you test on the TV as you go.

[vhelp]

Hi cd090580,

Are you able to post a couple of sample pic's of your noise ??
That would help us out even more.

* Are the noise, random noise.., like "." dots for instance ?
* Are you refering to Lines running through your video
* Are you refering to distoration lines at the bottom of your capture
* etc.

Just trying to help, if I can

Thanks,
-vhelp

[Wilbert]

http://www.geocities.com/wilbertdijkhof/analog_comp/comparison.htm

might be of some help

[cd090580]

Hi cd090580,

Are you able to post a couple of sample pic's of your noise ??
That would help us out even more.

* Are the noise, random noise.., like "." dots for instance ?
Just trying to help, if I can

Thanks,
-vhelp

The noise is like small 'dots', the video is somewhat grainy. Like watching vhs tapes or analog tv.

The link given by wilbert is excellent for a comparison but mosst of filters used needs SSE

[lordsmurf]

This guide don't give any filter name, only tmpgenc is mentioned

It's not supposed to. It just tells how to solve the problems. You'll have to find your own filter that does the fix.