VirtualDub Filters

[lordsmurf]

use virtualdub to filter your source, just use the " typical" (and pretty fast) combo: Static Noise Reduction ( 6, interlace on), Dynamic Noise Reduction (8 MMX version)

I had Dynamic Noise Reduction set at 10, but otherwise, nice filter combo.

[SatStorm]

Dynamic noise reduction with a higher value than " 8 ", **** up the motion when I deal with true video. (remember early plasma screens? It creates that kind of FX on the picture, and I have this).
When I encode cartoons, In rise it a bit but never beyond 10

A nice little filter is also "frame merger"

[lordsmurf]

My video was really dirty. I didn't see any adverse side effects.

[pc_account]

Hello there,

I have a few videos (format AVI) of tutorials that I would like to restore.

I guess that the capture settings were not the best one.

So, the movie shows shades making circles or color isolines.

As you can check on the two pictures attached, it creates a kind of isolines that change shapes with motion.

What kind of noise it it? has it a dedicated name?

My purpose would be to find the relevant filters (and settings) to improve the video.

Do you know what Virtualdub filters (and setting) can reduce this effect?

Thanks for your help

Pc_acc


Links to two pictures :

http://pg.photos.yahoo.com/ph/juliet_weidman/detail?.dir=/5100&.dnm=5a46.jpg
http://pg.photos.yahoo.com/ph/juliet_weidman/detail?.dir=/5100&.dnm=220b.jpg

[/url]

[lordsmurf]

That is digitally destroyed, not much can be done.

[SatStorm]

Load to virtualdub

use the following filters

msu_deblocking
2d Cleaner (default settings)
Static Noise Reduction ( 12 )
Dynamic Noise Reduction ( 6)
Sharpen ( 24 )

Don't expect a miracle, but it might look better. Is it worth it? Really, I don't know. It is more of a personal choice!

[pc_account]

Thanks a lot SatStorm for your help.


I found msu_deblocking and Sharpen.

but no way to find a link to download the 3 others:


2d Cleaner
Static Noise Reduction
Dynamic Noise Reduction

Could you please tell me where to get these?

Regards

Pc_acc

[SatStorm]

Type "virtualdub 2d Cleaner" on google. Gonna appear first on the page

Dynamic and Static Noise reduction here http://www.shdon.com/view.php?cat=vid&doc=vid_dnr

[pc_account]

SatStorm

I apologize for being too impatient.

I did the search, got the links that all seemed empty.

But reading your post prompted me to try again.

It works, I got the filters. Maybe It was a TZ problem.


Thanks again.

Regards.

Pc_acc.

[tigerman8u]

check here for an excellent list of Virtualdub filters
http://www.hlinke.de/Vdub-Filterlist/vdub-filterlist.html

[johnmeyer]

I have restored several hundred hours of VHS, S-VHS, and 8mm tapes. I originally used VirtualDub, but then switched to AVISynth, because it performs faster and also has far more ways of controlling the video.

Since this is a thread on VirtualDub, let me give you the chain of filters I use as a starting point:

I use (in this order):

• Giles Mouchard's Chroma Noise Reduction (luma wide 75.00% 15.98% chroma; Chroma 1 100%, 100% chroma; Chroma2 100%, 31.7% chroma; no chroma shift
  
  Donald Graft's Smart Smoother (Diameter 3, Threshold 30, Interlaced Source checked)
  
  Antonio Foranna's Noise Reduction Suite (only the Temporal Smoother enabled, SCD 100%, Dark 6, Light 10, Interlaced checked)

The smart smoother is very slow but, together with the temporal smoother, does a really good job of reducing the noise without eliminating it. Most other approaches tend to completely eliminate some noise, which makes the remaining noise even more irritating to look at, and also introduces artifacts when things move.

This filter chain does a particularly good job getting rid of rainbows, chroma noise, and the annoying "shimmering" around red objects that NTSC, but especially VHS NTSC, are noted for.

For many tapes, I eliminate the smart smoother, because it is slow, and because I often don't like the overly-smoothed results.

AVISynth

Since a few others have shared their scripts, here is the one I now use as the starting point:

#Serve RGB32 from Vegas If going into Mainconcept MPEG encoder
#convert back to RGB32 in this script. Check the RGB 16-235 box in the Mainconcept encoder

# CNR2 does NOT need to be fed deinterlaced frames
loadPlugin("c:\Program Files\AviSynth 2.5\plugins\CNR\Cnr2.dll")

AVISource("D:\frameserver.avi")

#These plugins require color space conversion
converttoYV12(interlaced=true)

Cnr2("oxx",8,16,191,100,255,32,255,false) #this is CNR for VHS
#Cnr2("oxx",8,14,191,75,255,20,255,false)   #this is CNR for Laserdisc  

fluxsmoothT(10)

#Pick the color conversion for final output
#converttoYUY2(interlaced=true)

# RGB required when going to VD (no RGB required in MC in VD)
ConvertToRGB32(interlaced=true)

# This line required when going to MC external encoder
# Levels(16, 1, 235, 0, 255, coring=false)

CNR is the chroma denoiser (it is a port of the exact same Mouchard chroma filter I used with VirtualDub), and Fluxsmooth is a little-known but highly optimized temporal denoiser (actually the main filter is both spatial and temporal, but there is a special invocation, when you call it it with the capital "T", that invokes a really fast temporal algorithm). I have never used another temporal cleaner that even comes close to the speed or quality of this one. You can crank up the setting to as high as 30 or 40 before the artifacts start to get objectionable.