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Denoising filters
These filters help you remove different kinds of noise from the video. Spatial denoisers (smoothers) use current frame only, temporal ones use difference between frames.

2d cleaner optimized Donald Graft
Spatial denoiser blending low-level video noise by replacing each pixel with the average of its neighbors within a specified threshold.

http://neuron2.net/2dcleaner.html

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Area smoother Daniel Vollmer
Non-temporal noise-reduction for anime/cartoon material that does not affect background-areas. Replaces (more or less) uniformly colored areas by their average.

http://www.hlinke.de/tinc?key=U4rlLOrY&formname=VirtualDub_Filter

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box blur Donald Graft
External filter of VirtualDub's internal Box Blur filter with opacity slider.

http://rationalqm.us/boxblur/boxblur.html

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Camcorder color denoise Sergey Stolyarevskiy
Removes colour noise of the video camera matrix.

http://acobw.narod.ru/

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Chroma noise reduction Gilles Mouchard
Reduce the noise on chrominancy.

http://www.hlinke.de/tinc?key=U4rlLOrY&formname=VirtualDub_Filter

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De-Ghosting flaXen
Undo ghosting" effects seen in analog video."

http://flaxen.edwardk.info/

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Debayering Luca Ballan
Debayering (demosaic) filter for RAW videos in RGBG format.

http://www.inf.ethz.ch/personal/lballan/software.html

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Defogger From Noise Sergey Stolyarevskiy
Strong VHS video cleaning (denoising).

http://acobw.narod.ru/dfn.html

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denoise tHE fISH
Denoise filter like Donald Graft's deflicker filter with a window size of 1.

http://neuron2.net/hosted.html

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DotCrawl Comb Filter Scott Elliott
Remove crawling dots and false colours caused by NTSC composite video captures.

http://home.earthlink.net/~tacosalad/video/dotcrawl.html

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dynamic noise reduction (MMX) Steven Henk Don
Reduces changes across frames by eliminating dynamic noise without blurring. This one is a lot faster and blends noise over time.

http://www.shdon.com/vid/vid_dnr

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FFT Noise Removal (YIQ) BirdzI Software
" Removes ""noise"" from the YIQ components of the video signal."

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Film Dirt Cleaner Infognition Co. Ltd.
Motion-compensated temporal denoiser for cleaning film dirt.

http://www.infognition.com/dirtcleaner/

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frame merger Valentim Batista
Smooth temporally the picture by blending each frame with the previous one in order to reduce noise and artefacts.

http://www.geocities.com/gc_timsara/vdub/fm/framemerger0.1.htm

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Frequency Suppressor of the Noise Sergey Stolyarevskiy
Fourier-based denoiser working in frequency domain. For VHS and DV.

http://acobw.narod.ru/fsn.html

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fxTemp flaXen
Advanced Temporal Stabilizer.

http://flaxen.edwardk.info/

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Gaussian Blur Emiliano Ferrari
Advanced Gaussian Blur Filter.

http://emiliano.deepabyss.org/

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General convolution 3D Gunnar Thalin
A general 5x5 convolution filter with an extra dimension - time. It applies one matrix to the current frame, another matrix to the previous and yet another one to the frame prior to that.

http://www.guthspot.se/video/

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Ghost Remover Emiliano Ferrari
Remove ghost image.

http://emiliano.deepabyss.org/

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High Quality Smoother Klaus Post
Smooth/blur while preserving structure. Based on smart smart smoother by Donald Graft

http://neuron2.net/hiq/smoothhiq.html

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Median filter Sergey Stolyarevskiy
Classic median 3x3 filter for removing VHS noise.

http://acobw.narod.ru/mediana.html

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MSU Cartoon Restore MSU Video Group
Improves compressed animated cartoons quality by removing ringing artifacts.

http://compression.ru/video/cartoon_restore/index_en.htm

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MSU Deblocking MSU Video Group
Recovering quality of video ripped from DVD, VideoCD or after decompression.

http://compression.ru/video/deblocking/index_en.html

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MSU Denoiser MSU Video Group
Designed for noisy video stream processing, video quality improvement, or video preprocessing. The filter implementation is able to use GPU processing power to increase the processing speed.

http://compression.ru/video/denoising/index_en.html

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MSU Smart Deblocking MSU Video Group
Recovering quality of video ripped from DVD, VideoCD or after decompression. Automatically determines the blockiness' strength on the frame and in the concrete part of it.

http://compression.ru/video/deblocking/smartdeblocking_en.html

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Neat Video ABSoft
Reduce noise in video. A very good denoiser.

http://www.neatvideo.com

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Noise Reduction/Shifting/Cropping (NRS) Filter Antonio Foranna
Reduce changes across frames & blur preserving structure & crop and center images & adjust gamma.

http://neuron2.net/nrs/nrs.html

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Nonlinear Dynamic Filtering Sergey Stolyarevskiy
Nonlinear Dynamic Filtering

http://acobw.narod.ru/ndf.html

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Nonlinear Smoothing Loss-Free Sergey Stolyarevskiy
In-frame smoothing preserving sharp details.

http://acobw.narod.ru/nslf.html

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Nonlinear Smoothing Loss-Free 3D matrix 3*3 Sergey Stolyarevskiy
Nonlinear Smoothing Loss-Free 3D (3x3)

http://acobw.narod.ru/nslf_3d.html

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pops Valentim Batista
Remove or smooth pops, near white or near black spots and streaks that appear in some bad film copies translations to video, by temporally processing the picture.

http://www.geocities.com/gc_timsara/vdub/po/pops0.1.htm

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Processing the linear hindrances Sergey Stolyarevskiy
Removes specific videotape artefacts like random white horizontal lines. Designed for interlaced content.

http://acobw.narod.ru/plh.html

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Processing the pulsed hindrances Sergey Stolyarevskiy
Removes dust" noise."

http://acobw.narod.ru/pph.html

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proximity locker Chir
Complement to existing pixel-locking filters, like Flaxen's fixVHS or Jim Casaburi's Temporal Cleaner.

http://www.geocities.com/chir_geo/dub/

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Random noise remover Mikhail Rozov
Reduces random noise across frames without bluring.

http://mediatory.ru/article21_article_24_1.phtml

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shadow smoother Valentim Batista
Spatial and temporal smoothing in the shadow areas of video.

http://www.geocities.com/gc_timsara/vdub/ss/shadowsmoother07.htm

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Smart Line smoother MIDIMaker
Smooths line while preserving structure.

http://midimaker.narod.ru/

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Smart Skating Rink Sergey Stolyarevskiy
Spatial denoising filter.

http://acobw.narod.ru/

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smart smoother Donald Graft
Smooth/blur while preserving structure.

http://neuron2.net/smooth.html

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smart smoother HiQuality Klaus Post
Smoothing on video material to eliminate noise and MPEG artefacts.

http://neuron2.net/hiq/smoothhiq.html

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smart smoother IQ Tim Park
This filter performs structure-preserving smoothing (blurring) on the I/Q (chrominance or colour) information of the image, leaving Y (luminance) intact. Attempt to reduce the appearance of rainbows" (cross-colour artifacts) near lines in cel animation."

http://www.doki.ca/filters/

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Smoother Emiliano Ferrari
Blur effects.

http://emiliano.deepabyss.org/

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spatial smoother Ioura Batugowski
Blur filter that operates only on pixels whose colour is reasonably close to each other.

http://users.win.be/ws200482/virtualdub.html

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SpotRemover Konstantin Khlopenkov
Removes dust and spots from damaged films. Includes optional time smoothing to suppress film grain.

http://spotremoverfilter.com/

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static noise reduction Steven Henk Don
Reduce random noise in the image while maintaining contrast.

http://www.shdon.com/vid/vid_snr

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Super temporary cleaner Sergey Stolyarevskiy
Temporal filter for clearing of noise. Gives a delay of video so it is necessary to correct a delay of audio on 0.08 sec.

http://acobw.narod.ru/

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temporal cleaner Jim Casaburi
Modified version of VirtualDub's internal temporal smoother filter that only averages pixels between frames that are within certain thresholds.

http://home.earthlink.net/~casaburi/download/

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Vague Denoiser Emiliano Ferrari
Port of VagueDenoiser plugin for Avisynth.

http://emiliano.deepabyss.org/

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verticalblur M1Research
Vertical Blur Video.

http://research.m1stereo.tv/wiki/index.php/Virtualdub-filters

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Video DeNoise Alexander Tchirkov
Suppression of noise as small bright lines, red or blue color, less often green.

http://www.risingresearch.com/en/denoise/index.shtml

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Yet another temporal smoother Eric A. Welsh
YATS averages pixels in the current frame with pixels in the previous frame. YATS differs from other filters in the extra processing it does to be extra paranoid about moving pixels.

http://www.doom9.org/index.html?/software2.htm

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