External filters

From Avisynth

Rough classification of filters (in progress).

To make it easier for people to to find what they need here, the list includes both script function filters (see Import) and plugin filters (see Plugins).

A list of older plugins (for AviSynth v1.0x/v2.0x) which are still sometimes used can be found here.

Most scripts will apply filters in the following order:

1. Create an AviSynth clip from a video file.
2. Correct or remove any unwanted features in the video (e.g. dot crawl, field blending or telecine).
3. Denoise the video (optional).
4. Manipulate the video into the desired format (by e.g. changing the size and frame rate).

AviSynth filters have been classified under these four basic tasks, with a fifth category for filters that fall outside this scheme, and a sixth category for filters that process audio only.

Contents 1 Source Filters 2 Restoration Filters 2.1 Anti-aliasing 2.2 Chroma correction 2.3 Debanding 2.4 Deblocking 2.5 Dehaloing 2.6 Deringing 2.7 Deinterlacing 2.8 Fieldblending and Frameblending removal 2.9 Film Damage correction 2.10 Frequency Interference removal 2.11 IVTC & Decimation 2.12 Ghost Removal 2.13 Logo removal 2.14 Luma Equalisation 2.15 Rainbow & Dot Crawl removal 2.16 Stabilization 3 Denoisers 3.1 Spatial Denoisers 3.2 Temporal Denoisers 3.3 Spatio-Temporal Denoisers 4 Adjustment Filters 4.1 Colourspace Conversion 4.2 Duplicate Frame Detectors 4.3 Effects 4.4 Field Order 4.5 Frame Rate Conversion 4.6 Levels and Chroma 4.7 Linedarkening 4.8 Resizers 4.9 Sharpeners 4.10 Subtitling 4.11 Transitions 5 Other Filters 5.1 Debugging/Diagnostic Filters 5.2 Export Filters 5.3 Import Filters 5.4 Meta-Filters 5.5 Multipurpose Filters 5.6 Support filters 6 Audio Filters 7 As Yet Unclassified

[edit] Source Filters

Filter	Description	Color format	Plugin / Script	Author
BassAudio	Bass Audio decoder. Supports wav, aiff, mp3, mp2, mp1, ogg. Support for aac, ac3, alac, ape, cd, flac, midi, mpc, ofr, spx, tta, wma, wv with additional included dll's. The filter is included in the Behappy package.	N/A	Plugin
DGAVCDecode	AVC/H.264 decoder plug-in.	YV12	Plugin	Donald Graft
DGAVCDecNV	GPU-Enabled AVC/H.264 Decoder and Frame Server. Uses CUDA; nVidia 8xxx cards and up. It's payware.		Plugin	Donald Graft
DGDecode	Decode MPEG1/MPEG2 streams from: DVD VOBs, captured transport streams, *.mpg/*.m2v/*.pva files, etc. Use this instead of MPEGDecoder/MPEG2Dec3.	YV12, YUY2, RGB24, I420	Plugin	Donald Graft
DGVC1DecNV	VC-1 Decoder and Frame Server. Uses CUDA; nVidia 8xxx cards and up. It's payware.		Plugin	Donald Graft
DirectShowSource2	Uses the installed Haali Media Splitter along with avss.dll plugin. Converts vfr files to cfr in order to support frame-accurate seeking.		Plugin
DVInfo	Grabs the timestamp and recording date info from a DV-AVI. See discussion.	N/A	Plugin	WarpEnterprises
DVTimeStampEx	Shows DV timestamp information over a DV clip.	N/A	Plugin
FFmpegSource	Decodes all ffmpeg (libavcodec) supported A/V formats with frame accurate seeking in AVI, MKV and MP4. See discussion.	RGB, YUY2, YV12, I420	Plugin	Myrsloik
HDVInfo	Grabs the timestamp and recording date info out of a M2T-D2V file	N/A	Plugin
ImageSequence	Load png, jpg, bmp, pcx, tga and gif image sequences using the Corona Image I/O Library. CoronaSequence/RawSequence.	RGB32	Plugin
Immaavs	ImmaRead uses the ImageMagick libraries to read images. Many formats are supported including animations, multipage files, image sequences and images with different sizes.		Plugin	Wilbert Dijkhof
IUF	Import Uncompressed File. Must be uncompressed! Supported uncompressed Formats: avi, omf(avid), pxr(pixar), mov(24/32bit quicktime), cineon. Can export as well. See discussion.	RGB	Plugin
MPASource	A mp1/mp2/mp3 audio decoder plugin. See discussion	N/A	Plugin	WarpEnterprises
MPEGDecoder	Load VOB/MPEG-2 ES,PS,TS/MPEG-1 files directly. (deprecated)	YV12	Plugin
MPEG2Dec	Mpeg2dec is a plugin which lets AviSynth import MPEG2 files. (deprecated)	RGB, YUY2	Plugin	Dividee and others
MPEG2Dec3	A MPEG2Dec2.dll modification with deblocking and deringing. Note that the colorspace information of dvd2avi is ignored when using mpeg2dec. See discussion. (deprecated)	RGB, YUY2, YV12	Plugin	Marc FD, Nic, Tom Barry, Klaus Post (sh0dan) and others
NicAudio	Audio Plugins for Audio: MPEGAudio/AC3/DTS/LPCM and other uncompressed formats. Formerly known As EvilMPASource. See discussion.	N/A	Plugin	Nic
OmfSource	Opens the AVID OMF file format (video only, and only works with captured files). See discussion.	YUY2, YV12	Plugin	tateu
QTSource	Quicktime Import/Export Filter using an existing installation of Quicktime 6/7. See discussion.	RGB32, RGB24, YUY2	Plugin	tateu
R3DSource	Redcode RAW source plugin to load R3D clips. See discussion.	RGB32	Plugin	Gábor Kertai
RawSource	Loads raw video data directly from files. See the initial discussion and its continuation.	RGB, YUY2, YV12	Plugin	WarpEnterprises, Wilbert Dijkhof and Klaus Post (sh0dan)
RawReader	Loads raw video data directly from files, similarly to the above, but also allows for headers, and extra formats such as GREY, Y8, interleaved RGB, BGR (which is RGB24), BGRA (which is RGB32), ARBG, ABGR, RGBA, YUV (which is YCbCr), YUY2, UYVY, AYUV, planar YUV444, YUV422, YUV420 (as YV12), YUV420 (as IMC2), and works with ImageMagick.	RGB, YUY2, YV12, and many more (see to left for a list, see documentation for details)	Plugin with scripts	Peter Pakulski

[edit] Restoration Filters

These remove effects or artefacts introduced (deliberately or accidentally) into the source video. Denoisers are classified separately.

[edit] Anti-aliasing

Filter	Description	Color format	Plugin / Script	Author
AAA	Anti-aliasing filter designed for anime. See discussion.	YV12	Script	Soulhunter
AntiAliasing	Anti-aliasing script for, well, anti-aliasing. See discussion.	YV12	Script	SpikeSpiegel, Didée, mf, scharfis_brain and Soulhunter
SangNom	A single field deinterlacer, can also be used for anti-aliasing. See discussion.	YV12	Plugin	Marc FD
SAA	A simple anti-aliasing script. See discussion.	YV12	Script	Soulhunter
SharpAAMCmod	High quality MoComped AntiAliasing script, also a line darkener since it uses edge masking to apply tweakable warp sharpening, "normal" sharpening and line darkening with optional temporal stabilization of these edges. Part of AnimeIVTC. See [1] and [2]		Script	thetoof
TIsophote	A level-set (isophote) smoothing filter, see [3]	YV12	Plugin	tritical

[edit] Chroma correction

Filter	Description	Color format	Plugin / Script	Author
BT709ToBT601	Convert from BT.709 (HDTV) to BT.601 (SDTV) colorimetry.	YV12	Plugin	Tom Barry
ChromaShift	This filter will shift the chrominance information by an even number of pixels, in either horizontal direction. It can also apply an overall vertical shift of the total chrominance information, up or down. It is primarily intended to correct improper colour registration.	YV12, YUY2, RGB	Plugin	Simon Walters
ChromaShiftSP	This script can shift chroma in all directions with subpixel accuracy.		Script
ColorMatrix	ColorMatrix corrects the colors of MPEG-2 streams. More correctly, many MPEG-2 streams use slightly different coefficients (called Rec.709) for storing the color information than AviSynth's color conversion routines or the XviD/DivX decoders (called Rec.601) do, with the result that DivX/XviD clips or MPEG-2 clips encoded by TMPGEnc/QuEnc are displayed with slighty off colors. This can be checked by opening the MPEG-2 stream directly in VDubMod. See discussion.	YV12, YUY2	Plugin	Wilbert Dijkhof tritical (v2.0+)
FixChromaBleeding	Fixes area of chroma bleeding by shifting the chroma and lowering the saturation in the affected areas.	YV12	Script	Alex Jordan
ReInterpolate411	This is a fast simple filter to correct the improper 4:1:1 => 4:2:2 conversion that seems to occur with some DV/4:1:1 codes when used with Avisynth. It assumes the odd chroma pixels are duplicates and discards them replacing them with the average of the two horizontally adjacent even chroma pixels. It doesn't matter whether the clip is interlaced though it must be in YUY2 format for Avisynth 2.5. There are no parameters, and currently no readme file.	YUY2	Plugin	Tom Barry
ReInterpolate420	Usually, DV decoders upsample PAL DV (which is YV12) to YUY2 using point sampling. This plugin reinterpolates the original chroma samples.	YUY2	Plugin	Wilbert Dijkhof Fizick (Alexander Balakhnin) (v3)
MoveChroma	MoveChroma is a simple filter combination that helps in moving chroma back, if it has been displaced.		Script
FixChromaticAberration	FixChromaticAberration resizes (and crops) the red/green/blue channels of the image separately. This helps to minimize the colored edges next to the image corners that result from lenses with chromatic aberration.		Script

[edit] Debanding

Filter	Description	Color format	Plugin / Script	Author
GradFun2DB	DeBanding Filter. See wikipedia:Color Banding	YV12, YUY2, RGB24, RGB32	Plugin	Prunedtree
GradFunkMirror	Script that fixes GradFun2DB's bug that leaves the first 16 pixels on every border unprocessed. Needs GradFun2DB !	YV12, YUY2, RGB24, RGB32	Script	Alain2, MugFunky
GradFun2DBmod	An advanced debanding script based on GradFun2DB.	YV12	Script	LaTo

[edit] Deblocking

Filter	Description	Color format	Plugin / Script	Author
DeBlock	Deblocking filter, see [4], [5]	YV12, YUY2	Plugin	Fizick (Alexander Balakhnin) / Manao
Deblock_QED	"A postprocessed Deblock(): Uses full frequencies of Deblock's changes on block borders, but DCT-lowpassed changes on block interiours." Didée See [6]	YV12	Script	Didée
FunkyDeBlock	Deblocking script based on BlindPP and high/lowpass separation. See discussion.	YV12	Script	Mug Funky
MDeblock	Plugin for removing block artifacts, see [7]	YV12	Plugin	Kassandro
SmoothD	Filter to deblock frames while keeping high frequency detail. See discussion.	YV12	Plugin	Tobias Bergmann

[edit] Dehaloing

Filter	Description	Color format	Plugin / Script	Author
BlindDeHalo	Filter to remove edge enhancement artefacts. See discussion.	YV12	Script	Didée
BlindDeHalo2	Filter to remove edge enhancement artefacts. See discussion.	YV12	Script	Didée
BlindDeHalo3	Filter to remove edge enhancement artefacts. See discussion.	YV12	Script	Didée
DeHalo_alpha	Very powerful filter to remove edge enhancement artefacts. See discussion.	YV12	Script	Didée
YAHR	Basic filter with no variables to remove edge enhancement artefacts. See [8]	YV12	Script	Didée

[edit] Deringing

Filter	Description	Color format	Plugin / Script	Author
BlindDeRing			Plugin	krieger2005
HQDering	Applies deringing by using a smart smoother near edges (where ringing occurs) only. See [9] for details.		Script	mf

[edit] Deinterlacing

Filter	Description	Color format	Plugin / Script	Author
Area	A port of Gunnar Thalin's VirtualDub filter "Deinterlace - area based" to AviSynth.	RGB32	Plugin	Donald Graft // Gunnar Thalin
BlendBob	Filter designed for use after a smart bob; blends every other frame with the closest matching neighbouring frame. See discussion.	YV12	Plugin	Kurt Prünner
DGBob	This filter splits each field of the source into its own frame and then adaptively creates the missing lines either by interpolating the current field or by using the previous field's data. See discussion.	RGB, YV12, YUY2	Plugin	Donald Graft
Decomb	The FieldDeinterlace filter provides functionality similar to the postprocessing function of Telecide. You can use it for pure interlaced streams (that is, those not containing telecined progressive frames). The name refers to the fact that field mode differencing is used.	YV12, YUY2	Plugin	Donald Graft
GreedyHMA	GreedyHMA is an Avisynth filter that executes DScaler's Greedy/HM algorithm code to perform pulldown matching, filtering, and video deinterlace. It has pretty much been superceded by Donald Graft's Decomb package. However there may be occasions where it sometimes gives preferable results, especially with some bad PAL clips.	YUY2	Plugin	Tom Barry
IBob	Interpolating Bob works identically to the Avisynth built-in Bob filter except that it uses linear interpolation instead of bicubic resizing. See discussion.	YV12, YUY2	Plugin	Kevin Atkinson
KernelDeint	This filter deinterlaces using a kernel approach. It gives greatly improved vertical resolution in deinterlaced areas compared to simple field discarding. Superceeded by LeakKernelDeint, see the description below in this table.	RGB, YV12, YUY2	Plugin	Donald Graft
LeakKernelBob	This filter does a full framerate deinterlacing, i.e. it turn 50 fields per second into 50 frames per second. Adapted from Scharfis_brain's script of the same name.	RGB32, YV12, YUY2	Plugin	Kurt Prünner
LeakKernelDeint	This filter deinterlaces using a kernel approach. It gives greatly improved vertical resolution in deinterlaced areas compared to simple field discarding. Compared to KernelDeint, it is low-level optimized (for speed) and provides some useful new functionality. As the original author of KernelDeint() states, LeakKernelDeint() is the preferred version to use.	RGB32, YV12, YUY2	Plugin	Kurt Prünner
MCBob	Another approach to motion compensated bobbing. No residual combing, Motion Masking adaptive to local complexity, self adaptive error correction for temporal interpolation, Motion Search between fields of same parity, and spatial Interpolation overweights spatio-temporal interpolation. Is SLOW. MCBob + EEDI2 [10] MCBob + NNEDI [11]		Script	Didée
MVBob	by scharfis_brain [12] and [13]		Script	scharfis_brain
Securebob	type=2 or type=3. (part of MVbob) [14]		Script	scharfis_brain
SecureDeint	(part of MVbob) [15]		Script (?)	scharfis_brain
SmoothDeinterlace	by Gunnar Thalin [16]		Plugin	Gunnar Thalin
TDeint	TDeint is a bi-directionally, motion adaptive (sharp) deinterlacer. It can also adaptively choose between using per-field and per-pixel motion adaptivity. It can use cubic interpolation, kernel interpolation (with temporal direction switching), or one of two forms of modified ELA interpolation which help to reduce "jaggy" edges in moving areas where interpolation must be used. TDeint also supports user overrides through an input file, and can act as a smart bobber or same frame rate deinterlacer, as well as an IVTC post-processor. See discussion.	YUY2, YV12	Plugin	tritical
TempGaussMC	Motion-compensated bob deinterlacer, based on temporal gaussian blurring. reduces noise/grain of the source and does NOT leave the original fields unchanged. Output is rich with details and very stable. Is SLOW	YUY2, YV12	Script	Didée
TomsMoComp	This filter uses motion compensation and adaptive processing to deinterlace video source (not for NTSC film). See discussion.	YUY2, YV12	Plugin	Tom Barry
Yadif	Port of YADIF (Yet Another DeInterlacing Filter) from MPlayer by Michael Niedermayer (http://www.mplayerhq.hu). It check pixels of previous, current and next frames to re-create the missed field by some local adaptive method (edge-directed interpolation) and uses spatial check to prevent most artifacts.	YUY2, YV12	Plugin	Fizick (Alexander Balakhnin)
Yadifmod	Modified version of Fizick's avisynth filter port of yadif from mplayer. This version doesn't internally generate spatial predictions, but takes them from an external clip. It also is not an Avisynth_C plugin (just a normal one).	YUY2, YV12	Plugin	tritical
TomsBob	We've asked Tom to include a proper 60fps deinterlacer in his wonderful TomsMoComp, but until then you'll have to make do with TomsBob.		Script

[edit] Fieldblending and Frameblending removal

Filter	Description	Color format	Plugin / Script	Author
c_deblend superseded by srestore	Cdeblend is a simple blend replacing function like unblend or removeblend.		Script	MOmonster
Deblend	See discussion.		Script	actionman133
mrestore superseded by srestore	Uses conditional frame evaluation to undo standard conversions with blends.	YV12	Script	MOmonster
RemoveBlend	This filter is used to remove blended fields/frames.	YV12	Plugin	Template:Author/violao
Restore24	Restore24 is an AviSynth filter that is able to do the nearly impossible: Restore 24fps FILM out of a fieldblended FILM -> Telecine -> NTSC -> Blendconversion -> PAL - Video. See discussion.		Script	scharfis_brain
RestoreFPS	RestoreFPS reverses the kind of blending generated by ConvertFPS, restoring original framerate. It will work perfectly well on any regular blend pattern.	YV12	Plugin	mg262
Unblend	Unblend is based on warpenterprise's deblend algorithm and neuron2's decimate code, with YV12 support only. The aim is the same of deblend. See discussion.	YV12	Plugin	Template:Author/Bach
FixBlendIVTC superseded by srestore	A blend replacing/frame restoring function for doubleblends caused by blend-deinterlacing of telecined sources.	?	Script	MOmonster
Cdeint	Restores 24fps FILM out of a fieldblended FILM -> Telecine -> NTSC -> Blendconversion -> PAL - Video (alternative for Restore24).		Script

[edit] Film Damage correction

Filter	Description	Color format	Plugin / Script	Author
UnDot	UnDot is a simple median filter for removing dots, that is stray orphan pixels and mosquito noise. It clips each pixel value to stay within min and max of its eight surrounding neigbors. See discussion.	YUY2, YV12	Plugin	Tom Barry
DeScratch	DeScratch removes vertical scratches from films. Also it can be used for removing of horizontal noise lines such as drop-outs from analog VHS captures (after image rotation).	YV12	Plugin	Fizick (Alexander Balakhnin)
DeSpot	This filter is designed to remove temporal noise in the form of dots (spots) and streaks found in some videos. The filter is also useful for restoration (cleaning) of old telecined 8mm (and other) films from spots (from dust) and some stripes (scratches).	YV12	Plugin	Fizick (Alexander Balakhnin)
RemoveDirt	RemoveDirt is a temporal cleaner for Avisynth 2.5x. It has now become an AVS script function, which involves RestoreMotionBlocks and various filters from the RemoveGrain package.		Script	Rainer Wittmann
deVCR	deVCR elliminates (to a certain degree) the annoying horizontal lines that keep crawling around your VHS or Beta recorded video.		Script	Ricardo Garcia

[edit] Frequency Interference removal

Filter	Description	Color format	Plugin / Script	Author
DeFreq	Defreq uses Fast Fourier Transform method for frequency selecting an removing. See discussion.	YV12, YUY2	Plugin	Fizick (Alexander Balakhnin)
FanFilter	Regular vertical frequency interference is filtered in spatial domain.	YV12, YUY2, RGB32, RGB24	Plugin	V. C. Mohan

[edit] IVTC & Decimation

Filter	Description	Color format	Plugin / Script	Author
AnimeIVTC	What it does: High quality adaptative field matching for hard telecine Bob, remove the blends and decimate back to the desired framerate for DHT/field-blended Creating a VFR clip for hybrid sources Bob the interlaced credits, blend-deinterlacing the background while doing minimal damage on the progressive credits, convert their framerate to match the episode's and splice them with it OR leave them @ 30p to create a VFR clip Very good combing removal and anti-aliasing functions See [17]		Script	thetoof
BruteIVTC			Plugin	MarcFD
FDecimate	The FDecimate() filter provides extended decimation capabilities not available from Decimate(). It can remove frames from a clip to achieve the desired frame rate, while retaining audio/video synchronization. It preferentially removes duplicate frames where possible. ("FDecimate" stands for "Free Decimate", which implies that the output frame rate may be freely chosen, and is not limited to 1-in-N decimation).	YUY2, YV12	Plugin	Donald Graft
GreedyHMA	GreedyHMA is an Avisynth filter that executes DScaler's Greedy/HM algorithm code to perform pulldown matching, filtering, and video deinterlace. It has pretty much been superseded by Donald Graft's DeComb package. However there may be occasions where it sometimes gives preferable results, especially with some bad PAL clips.	YUY2	Plugin	Tom Barry
IT	Inverse Telecine	YUY2, YV12	Plugin	theJam79 / minamina
MultiDecimate	Removes N out of every M frames, taking the frames most similar to their predecessors. See discussion.	YUY2	Plugin	Donald Graft
PFR	PFR (Progressive Frame Restorer) is an Avisynth filter that attempts to produce progressive frames from a mixed progressive/interlaced/IVTCed source.	YUY2	Plugin	Simon Walters
ReMatch				Plugin
RePal				Plugin
SmartDecimate	Smart Decimate removes telecine by combining telecine fields and decimating at the same time, which is different from the traditional approach of matching telecine frames and then removing duplicates. See discussion.	YUY2, YV12	Plugin	Kevin Atkinson
Decomb	The Telecide and Decimate filters can be combined to implement IVTC.	YUY2, YV12	Plugin	Donald Graft
TIVTC	A package containing these 7 filters: TFM, TDecimate, MergeHints, FrameDiff, FieldDiff, ShowCombedTIVTC, and RequestLinear. Also contains these 3 conditional functions: IsCombedTIVTC, CFieldDiff, and CFrameDiff. Designed primarily for IVTC operations. Discussion	YUY2, YV12	Plugin	tritical
TPRIVTC			Plugin
UnComb	Filter for matching up even and odd fields of properly telecined NTSC or PAL film source video. See discussion.	YV12	Plugin	Tom Barry
IvtcBlend	Waka demonstrated an IvtcBlend function that uses the information in the "extra" fields of a telecined source to help combat temporal noise.		Script

[edit] Ghost Removal

Filter	Description	Color format	Plugin / Script	Author
FixVHSOversharp			Plugin
GhostBuster			Plugin	SansGrip

[edit] Logo removal

Filter	Description	Color format	Plugin / Script	Author
DeKafka	This fairly simple filter washes away those annoying bugs from broadcast clips.		Script
DeLogo	DeLogo Filter for VirtualDub. Removes static elements, e.g. logos or watermarks, from the video stream. It can remove either opaque elements or alpha blended, the latter even without destroying the picture beneath.		Plugin & Script	Karel Suhajda
InpaintFunc	Script for logo removal using inpainting. Can remove alpha blended or opaque logos with a basic postprocessing to hide artifacts.		Script	Reuf Toc
rm_logo	Combination of deblending and inpainting to remove logos with adjustable postprocessing to further hide artifacts. See [18]		Script	Spuds
X-Logo	X-Logo Avisynth plugin and Virtualdub filter. Removes opaque logos.		Plugin	Leuf

[edit] Luma Equalisation

Filter	Description	Color format	Plugin / Script	Author
Antiflicker			Plugin
EquLines			Plugin
ReduceFlicker	Reduces temporal oscillations in clips; should be applied before deinterlacing. Contains ReduceFlicker, ReduceFluctuation & LockClense. Discuss		Plugin

[edit] Rainbow & Dot Crawl removal

Filter	Description	Color format	Plugin / Script	Author
BiFrost			Plugin
Checkmate	de-rainbower and anti-dotcrawl filter.		Plugin
Dedot			Plugin
DFMDeRainbow	Creates mask to process only edges; rainbows are removed by hitting chroma planes with two passes of FluxSmooth (hence "Double-Flux-Mask").	YV12, YUY2	Script
GuavaComb			Plugin
LUTDeRainbow	Purely temporal; only targets pixels for derainbowing if chroma is fluctuating and (optionally) luma is not.	YV12 only	Script
mfRainbow	Derainbows according to the same principle as AntiFlicker.		Script
SmartSSIQ			Plugin
SSIQ			Plugin
TComb			Plugin
DeRainbow	It removes rainbows on the clip, without any visible quality loss.		Script	sh0dan

[edit] Stabilization

Filter	Description	Color format	Plugin / Script	Author
DePan	Tools for estimation and compensation of global motion (pan) .See [19]	YUY2, YV12	Plugin	Fizick (Alexander Balakhnin)
Stab	Simple but powerful script to remove small high frequenzy jitter that appears often on old/bad transfers. See [20]		Script	g-force
TBC	Stabilizes horizontal jitter in video from analog VCRs, similar to the function of a Time Base Corrector.		Script

[edit] Denoisers

Strength/Quality of Denoisers

(need subclassification)

Filter	Description	Color format	Plugin / Script	Author
AdaptiveMedian			Plugin
Atc			Plugin
ColourizeSmooth			Plugin
ConditionalTemporalMedian			Plugin
DCTFun4b			Plugin
DeNoise			Plugin
DNR2			Plugin
ExtendedBilateral			Plugin
MedianBlur	Spatial median blur filter with a variable radius		Plugin	tsp
PixieDustPP			Plugin
SmartSmoother			Plugin
SmootherHiQ			Plugin
SSIQ			Plugin
UberSmooth (Bloated)			Plugin
UberSmooth (DCTFun)			Plugin
UberSmooth (Deen)	[21]		Plugin
VariableBlur			Plugin

[edit] Spatial Denoisers

Filter	Description	Color format	Plugin / Script	Author
_2DCleanYUY2			Plugin
[DctFilter]	An experimental filter that operates on DCT coefficients.		Plugin	Tom Barry
eDeen	eDeen is a ultra powerfull spatial denoiser for very experienced encoders only.		Plugin	Marc FD
GPUBilateral	In short, bilateral filter is a edge-preserving smooth filter. See [22] and [23]		Plugin	Sompon Virojanadara
Msmooth	Masked smoother, designed specifically for anime.		Plugin	Donald Graft
Removegrain	RemoveGrain is a simple and extremely fast spatial denoiser for progressive and interlaced video.		Plugin	Rainer Wittmann
TBilateral	see [24]		Plugin	tritical
VagueDenoiser			Plugin

[edit] Temporal Denoisers

Filter	Description	Color format	Plugin / Script	Author
CNR2	This is the YUY2 and YV12 adaptation of CNR, a VDub Filter. A fast chroma denoiser. Usefull to filter VHS/TV caps and against rainbows.		Plugin	MarcFD
Fluxsmooth	Examines each pixel and compares it to the corresponding pixel in the previous and last frame.		Plugin
GrapeSmoother			Plugin
MVDegrain	Strong and effective temporal denoiser. Part of the MVTools package.		Plugin	Fizick (Alexander Balakhnin)
TemporalCleaner			Plugin
TTempSmooth	see [25]		Plugin	tritical
Temporal Degrain	SLOW but very effective at removing most grain from video sources.		Script

[edit] Spatio-Temporal Denoisers

Filter	Description	Color format	Plugin / Script	Author
Convolution3D	Convolution3D is a spatio-temporal smoother, it applies a 3D convolution filter to all pixels of consecutive frames. See discussion.	YUY2	Plugin	Sébastien Lucas
Deen	Deen is a set of assembly-optimised denoisers, like various 3d and 2d convolutions.		Plugin	MarcFD
dfttest	A 2D/3D frequency domain denoiser. See [26]		Plugin	tritical
DeGrainMedian	Two stage Spatio-Temporal Limited Median filter for grain removal. See		Plugin	Fizick (Alexander Balakhnin)
FFT3DFilter	A 3D Frequency Domain filter - gives strong denoising and moderate sharpening	YV12, YUY2	Plugin	Fizick (Alexander Balakhnin)
FFT3DGPU	Similar algorithm to FFT3DFilter, but uses graphics hardware for increased speed.		Plugin	tsp
FrFun3b			Plugin
FrFun7			Plugin
HQdn3d	see [27]		Plugin
MC_Spuds	Motion compensated noise removal with sharpening. Extremely slow, but extremely effective.		Script	Spuds, Didée
MCTemporalDenoise	Another high quality motion compensated noise removal script with an accompanying post-processing component (with loads of excess feature such as MC-Post-sharpening, MC-antialiasing, deblock, edgeclean and much more)	YV12	Script	LaTo
MipSmooth			Plugin
NoMoSmooth			Plugin
PeachSmoother			Plugin
RemoveNoiseMC	Motion compensated filter for removing noise, larger spots and other dirt. Written as an alternative to the old Dust. Last update Nov 2006.		Script	Heini011
STMedianFilter			Plugin

[edit] Adjustment Filters

[edit] Colourspace Conversion

Filter	Description	Color format	Plugin / Script	Author
AutoYUY2			Plugin
YV12toRGB24HQ			Plugin

[edit] Duplicate Frame Detectors

Filter	Description	Color format	Plugin / Script	Author
Dup	a robust duplicate frame detector. a frame that is determined to be close enough to its predecessor to be considered a duplicate will be replaced by a copy of the predecessor. This can significantly reduce the size of encoded clips with virtually no visual effect. provides the capability to replace frames with a blend of all the duplicates, providing a valuable noise reduction. Filter by Donald A. Graft.		Plugin	Donald Graft
Dupped	Another frame duplication function, similar to Dup, but hopefully more accurate. See [28]		Script	Corran
DeDup	Remove (drop) duplicate frames in the interest of compression quality and speed. Resulting clip will have a variable frame rate.		Plugin
GetDups	Selecting unique duplicate frames from clip, it return frames which have copies only, by one from the series (group). Made for 8mm films.	YUY2,YV12	Plugin

[edit] Effects

Filter	Description	Color format	Plugin / Script	Author
AddGrain	Generates film like grain or other effects (like rain) by adding random noise to clip. Noise can be horizontally or vertically correlated causing streaking. Contains AddGrain & AddGrainC	RGB32, RGB24, YUY2, YV12	Plugin	Tom Barry & Foxyshadis
AddNoise/Blockbuster	Makes encoder allocate more bits to darker areas, thus eliminating DCT blocks by decreasing the clips compressibility.		Plugin	Ross Thomas
AviShader	generic plugin that uses your 3D card's hardware to assist with rendering	RGB32	Plugin	Antitorgo
ColorLooks	This plugin is based on Trev's VDub filter Colorlooks and Donald Graft's Colorize (well it works a bit similar). I also added some new stuff. The plugin contains the following filters: Technicolor, Colorize, Sepia and Posterize.	RGB32, RGB24, YUY2, YV12	Plugin	Wilbert Dijkhof
EffectsMany	Creates 34 types of special "animated" effects. Effects act on the input clip in the range of the frame numbers specified. The Audio is not affected.	RGB32, RGB24, YUY2, YV12	Plugin	V. C. Mohan
GrainFactory3	Noise generator that tries to simulate the behavior of silver grain on film. See : [29]		Script	Didée
GNoise	Adds random noise to clip.		Plugin	soulhunter
HollywoodSQ	Creates popup album, akin to Hollywood squares TV show		Plugin	V. C. Mohan
KenBurnsEffect	Given clip, zooms, pans & rotates clip. See wikipedia:Ken Burns Effect	RGB32, RGB24, YUY2, YV12	Script	mikeytown2
NoiseGenerator	Newer function based off of Blockbuster. Adds random noise to clip.		Plugin	Shubin
Scanlines	Add Scanlines (black horizontal bars) to a video. see wikipedia:Scan Line		Plugin	turulo

[edit] Field Order

Filter	Description	Color format	Plugin / Script	Author
PFR			Plugin
ReverseFieldDominance			Plugin

[edit] Frame Rate Conversion

Filter	Description	Color format	Plugin / Script	Author
FrameDbl			Plugin
MotionProtectedFPS (Motion)			Script
MVFlowFPS(2) (MVTools)			Plugin
NTSC tools	Automatic NTSC to PAL conversion with 24p, 30p, 60i detection. See [30]		Script	Mug Funky
SalFPS3			Script
convert60ito24p	convert60ito24p converts a 60fps interlaced NTSC Video into a 24fps progressive Video using different blending techniques. discussion.		Script
AlterFPS	AlterFPS can be used to speed up or slow down a video by adding or removing fields. It works like the 3:2 pulldown of NTSC film material, except you can choose your new speed. It can also blend frames for progressive frame results, and blend fields like ConvertFPS.		Script

[edit] Levels and Chroma

Filter	Description	Color format	Plugin / Script	Author
AutoLevels	Improvement of the ColorYUV filter's autogain feature. It stretches the luma histogram to use the entire valid range, averaging the amount of "gain" over consecutive frames to better handle flashes and to avoid flickering.	YV12, YUY2, RGB32, RGB24	Plugin	T. Anschütz
Color Balance	Same tool that is found in Gimp & Cinepaint.	RGB32, RGB24	script	Gavino & mikeytown2
ChannelMixer	Very similar to the ChannelMixer function found in Photoshop. 9 Adjustments are possible, 3 for each color channel.	RGB32, RGB24	Plugin	Gustaf Ullberg
ColourLike	Makes a clip look like a 'reference' clip by adjusting each colour channel.	YV12	Plugin	mg262
ExpLabo	ExpSat apply a non-linear transformation of saturation, Colorize change the image color dominance in a flexible manner, HLSnoise adds a noise to the image separately to the HLS dimensions.	RGB32, RGB24	Plugin	brabbudu
FlimsYlevels	Luma adjustment function to give a more "film-ish" look. (Based on Didée's Ylevels).	YV12	Script	FlimsyFeet
GiCocu	Use GIMP/Photoshop curve files	RGB32, RGB24	Plugin	E-Male
HDRAGC	High Dynamic Range Automatic Gain Control - Increase dynamic range of video clips (enhance shadows). It's "simply" gaining (brightening) dark areas of image without causing blow of highlights. Amount of gain is calculated automatically, but can be influenced by parameters.	YV12, YUY2	Plugin	paviko
HistogramAdjust	Adjusts the histogram of a frame by either equalizing it or by matching with histogram of another image, or with given histogram table of values.	YV12, YUY2	Plugin	V. C. Mohan
SmoothLevels	Advanced levels adjustment function, with limiting & smoothing parameters.	YV12	Script	LaTo
TweakColor	Target specific hue and saturation ranges for hue and saturation adjustments.	YV12, YUY2	Plugin	trevlac
Tweak3	Same as Tweak but with dithering.	YV12, YUY2	Plugin	soulhunter
Ylevels	A simple replacement for Avisynth's internal Levels command, with a few neat differences.	YV12	Script	Didée
Tint	Tints the image toward a specified colour.		Script
SGradation	SGradation is much like a gamma function, but '2nd order'.		Script

[edit] Linedarkening

Filter	Description	Color format	Plugin / Script	Author
FastLineDarken			Script
LimitedDarken			Plugin
mfToon	mfToon darkens cartoon edges. In default operation, it performs line darkening, Xsharpening, and warp sharpening.	YV12	Script	mf
Toon	Simple and fast Linedarkener. See [31]		Plugin	mf
vmToon	The successor to mfToon. Darkens lines, thins lines, and does supersampled sharpening all in one, but slow.	YV12	Script	vectrangle

[edit] Resizers

Filter	Description	Color format	Plugin / Script	Author
AutoCrop	Automatically crops black borders (wikipedia:Letterbox, wikipedia:Pillar box, wikipedia:Windowbox) from a clip. Operates in preview mode (overlays the recommended cropping information) or cropping mode. Can also ensure width and height are multiples of specified numbers.	YV12, YUY2, RGB24, RGB32	Plugin
EdiUpsizer	see [32]		Plugin
EEDI2	see normal Multi-threaded Multi-threaded 64-bit		Plugin
FastEDIUpsizer	[33]		Plugin
HybridResize	Uses Lanczos (sharp) for edges and Bilinear (soft) on the rest of the image.		Script	mf
Lanczosplusv3	Very slow, but high quality resizer. See [34]		Script	*.mp4 guy
NNEDI	Neural Network New-Edge Directed Interpolation.		Plugin	tritical
Seamer	Seam Carving/Liquid Rescale for Content-Aware Image Resizing. See wikipedia:Seam Carving		Plugin
SimpleResize	Very simple and fast two tap linear interpolation. It is unfiltered which means it will not soften much.	YV12, YUY2	Plugin	Tom Barry
SplineResize	SplineResize contains two kinds of spline based resizers: The first ones are the (cubic) spline based resizers from Panorama tools: Spline100Resize (using 10 sample points) and Spline144Resize (using 12 sample points) are examples. Other ones are available in AviSynth itself. The second ones are natural cubic splines that use the kernel itself as a spline.	YV12, YUY2, RGB24, RGB32	Plugin	Wilbert Dijkhof
YV12InterlacedReduceBy2	InterlacedReduceBy2 is a fast Reduce By 2 filter, usefull as a very fast downsize of an interlaced clip. See discussion.	YV12	Plugin	Tom Barry
Zoom	Zoom, Pan & Rotate Clip. Adds alpha layer to clip.	RGB32	Plugin
ZoomBox	Replacement for ResizeKAR. Resizes clip Keeping the Aspect Ratio. Can set Source/Target PAR/DAR, option to zoom in/out in order to hide/show black borders.		Script
ResizeARC	ResizeARC respects AR as possible maintaining MOD32 resolutions, uses bitrate, bpp and the resize function specified as parameters. Usage:		Script

[edit] Sharpeners

Filter	Description	Color format	Plugin / Script	Author
aSharp	Adaptive sharpening filter. You can use it for high quality sharpening of soft sources. See discussion.	YV12	Plugin	Marc FD
aWarpSharp	A warp sharpening filter.	YV12	Plugin	Marc FD
LimitedSharpen	LimitedSharpen can be used like a traditional sharpener, but producing much less artefacts. It can be used as a replacement for the common "resize(x4)-XSharpen-resize(x1)" combo, with very similar results (perhaps even better) - but at least 2 times faster, since it requires much less oversampling.		Script	Didée
LSFmod	A LimitedSharpenFaster mod with a lot of new features and optimizations.	YV12	Script	LaTo
MSharpen	This filter implements an unusual concept in spatial sharpening to sharpen important edges without amplifying noise. Although designed specifically for anime, it also works quite well on normal video. See discussion.	RGB, YUY2, YV12	Plugin	Donald Graft
Super Slow Sharpen	Very slow, but high quality sharpener. See [35]		Script	*.mp4 guy
SSXSharpen	Included in SharpTools. Sharpens the picture using supersampling techniques.		Script	Didée
TUnsharp	TUnsharp is a basic sharpening filter that uses a couple different variations of unsharpmasking and allows for controlled sharpening based on edge magnitude and min/max neighborhood value clipping. The real reason for its existence is that it sports a gui with real time preview. See discussion.	YUY2, YV12	Plugin	tritical
UnFilter	This filter softens/sharpens a clip. It implements horizontal and vertical filters designed to (slightly) reverse previous efforts at softening or edge enhancement that are common (but ugly) in DVD mastering. See discussion.	YUY2, YV12	Plugin	Tom Barry
WarpSharp Package	Contains these sharpeners: Unsharpmask, WarpSharp, Xsharpen. 2003 Version 2008 Version	YUY2, YV12	Plugin
WarpSharp YV12	Contains WarpSharp & XSharpen. This version of WarpSharp is very fast.	YV12	Plugin

[edit] Subtitling

Filter	Description	Color format	Plugin / Script	Author
AssRender	Libass-based subtitle renderer. See discussion.	RGB32	Plugin (libass GIT build)	TheFluff
SubAA	Single Subtitle with Anti-aliasing.		Script
SubtitleEx	Similar to the original Subtitle function but can do more: apply text to range; effects - bold, underline, italic, center, fading, motion, blur, emboss, etc...; alpha channel.		Plugin
TextSub (VSFilter)	Supported Subtitle Formats: VOBsub (.sub/.idx), SubStation Alpha/Advanced SubStation Alpha (.ssa/.ass), SubRip (.srt), MicroDVD (.sub), SAMI (.smi), PowerDivX (.psb), Universal Subtitle Format (.usf), Structured Subtitle Format (.ssf). See [36]		Plugin
SubtitleMulti	A parameter-compatible Subtitle function which allows the usage of line breaks.		Script	JLennox

[edit] Transitions

Filter	Description	Color format	Plugin / Script	Author
DissolveAGG	Wipe Transition with a soft edge. See discussion. Note: There exist multiple variants of the script as the result of the interaction between authors in that discussion.		Script (v1) Script (v2) Script (v3)	zemog, mikeytown2, Gavino and others
JDL_MaskTransition	Combines two clips using the specified mask clip. The audio tracks are blended during the transition. About any transition can be made with this function.		Script	James D. Lin (stickboy)
TransAll	Around 150 distinct transitions can be created with this plugin.	RGB, YUY2, YV12	Plugin	V. C. Mohan
Transition (Albert Gasset)	Various Wipe and Random Block modes. Has 19 built in patterns or it can use an external file.		Plugin	Albert Gasset
Transition (shubin)	Contains 2 modes: circle and line. In circle mode the area has radius R and center xCenter,yCenter. In line mode the line passes through xCenter,yCenter with slope R.		Plugin	Shubin

[edit] Other Filters

[edit] Debugging/Diagnostic Filters

Filter	Description	Color format	Plugin / Script	Author
AVInfo			Plugin
Avisynth Monitor			Plugin
AvsTimer			Plugin
DumpPixelValues	Samples the colors from selected pixels for every frame in a video source and outputs the data to a text or binary file.	RGB32, YUY2	Plugin
Framenumber	Framenumber inserts the framenumber of the current frame (+ offset).		Plugin
Grid			Plugin
HDColorBars	A script to create an HD test pattern based on ARIB STD-B28 Rev1. Can easily be adapted to a SMPTE version. Image	YV12	HDColorBars
Kronos			Plugin
Measure	Measures luminence of greyscale bars and prints results on-screen. Can be used to set brightness/contrast in capture settings accurately.	YV12	Script
MonitorFilter			Plugin
PixelInfo	A GUI-based filter that lets you pick a pixel and gives you color information.	RGB32, YUY2	Plugin
ShowPixelValues	This filter displays the actual Y U and V (or R G and B) values from pixels within a frame.	RGB32, YUY2	Plugin
Testpatterns	This filter creates a sinewave frequency sweep directly in YV12, useful to measuring video response.	YV12	Script
TMonitor			Plugin
ViewFields/UnViewFields			Plugin
Comptest	The script Compressibility test can be used for a compressibility test on a clip.		Script
SeeTheDifference	SeeTheDifference just makes the difference visible between an encoded and an original videoclip. So you can see what you really "lose" when encoding a video.		Script
BoxCompare	BoxCompare will let you compare up to 4 clips with simple annotations. It's basically a wrapper for StackHorizontal/StackVertical.		Script

[edit] Export Filters

These filters are used to export things from an avs file.

Filter	Description	Color format	Plugin / Script	Author
Immaavs	ImmaWrite uses the ImageMagick libraries to write images. Many formats are supported including animations and multipage files.		Plugin	Wilbert Dijkhof
twriteavi	Serve AVI file to program requesting it as well as write an avi file. Useful for speeding up 2 pass encodes at the cost of hard drive space.		Plugin

[edit] Import Filters

These filters are used to import filters written for other audio and video packages.

Filter	Description	Color format	Plugin / Script	Author
FreeFrame	Allows freeframe filters (mostly effects) to be used directly in avisynth.	RGB24, RGB32	Plugin
LoadVFApiPlugin			Plugin

[edit] Meta-Filters

These filters are primarily designed to be used with other filters, to restrict or augment their effect.

Filter	Description	Color format	Plugin / Script	Author
Motion	see [37]		Plugin
MT	MT is a filter that enables other filters to run multithreaded. This should hopefully speed up processing on hyperthreaded/multicore processors or multiprocessor systems. See [38]	Any	Plugin	tsp
MVTools	MVTools provides filters for estimation and compensation of objects' motion in video clips. Motion compensation may be used for strong temporal denoising, advanced framerate conversions, image restoration and other tasks. See [39]		Plugin	Fizick (Alexander Balakhnin)

[edit] Multipurpose Filters

Filter	Description	Color format	Plugin / Script	Author
Camembert	Camembert provides HQDering's functionality with additional background enhancement.	YV12	Script
HybridFuPP	An adaptive processor, allowing picture cleaning and compressibility gain.		Script	Fupp
iiP	Integrated Image Processor performs basic denoising and sharpening excluding already hard edges to avoid oversharpening; this should give the best relative compressibility for any level of detail enhancement. Its main purpose is upconversion from DVD resolutions to (pseudo-) HDTV resolutions. It aims at natural sources only. For animated/cartoon content, one is probably better of with mfToon and SharpResize.	YV12	Script
SeeSaw	SeeSaw uses a balance of denoising and sharpening to enhance a clip. The aim is to enhance weak detail without oversharpening or creating jaggies on strong detail, and produce a result that is temporally stable without detail shimmering.	YV12	Script

[edit] Support filters

These filters are primarily designed to augment the creation of custom script-based filters.

Filter	Description	Color format	Plugin / Script	Author
CheckMask			Plugin
FrameCache	Frame cache plugin. It helps greatly increase performance, especially in combination with another plugins, like SmoothDeinterlace. Usage FrameCache( [number of frames to remember], (path to log file) ).	any	johny5 dot coder via gmail	Evgeny
GRunT	Extends Avisynth's Runtime Environment, making it easier to use, especially inside script functions.	Any	Plugin	Gavino
GScript	Extends the Avisynth scripting language to provide additional control-flow constructs: multi-line conditionals (if-then-else blocks), 'while' loops and 'for' loops.	Any	Plugin	Gavino
MaskTools	This plugin provides tools for the creation, enhancement and manipulation of masks for each component (Y, U, V) of the YV12 color space. See discussion. This version is now deprecated, use MaskTools2 instead for new scripts.	YV12	Plugin	Kurosu Manao
MaskTools2	This plugin provides tools for the creation, enhancement and manipulation of masks for each component (Y, U, V) of the YV12 color space.	YV12	Plugin	Manao
MergeClips			Plugin
MVTools	This plugin provides a collection of functions for motion estimation and compensation.	YV12, YUY2	Plugin	Various
PlaneMinMax			Plugin
ApplyInterlacedFilter	ApplyInterlacedFilter safely processes interlaced video with spatial and temporal filters.		Script

[edit] Audio Filters

Filter	Description	Color format	Plugin / Script	Author
AudioGraph	Displays the audio waveform superimposed on the video. Intended to help with editing rather than for final output. Useful for finding specific dialog or sound, and for checking A/V sync.	YUY2, RGB24, RGB32	Plugin	Template:Author/Richard Ling Klaus Post (sh0dan)
BeFa	Band Eliminate Filter for Audio	N/A	Plugin
MinMaxAudio	Computes the root mean square, maximal or minimal value over all samples in all channels,or just over all samples in channel, and outputs the value (in decibels) as a string. It's a conditional audio filter, so the computation is done framewise.	N/A	Plugin	Wilbert Dijkhof
Sox Audio Effect Filter	Use SOX effects within AviSynth. Most effects are supported, and multiple effects can be stacked after each other.	N/A	Plugin	Klaus Post (sh0dan)
ViewAudio	includes two filters: ViewAudio and AudioCache.		Plugin
FindAudioSyncScript	FindAudioSyncScript helps you to find the appropriate audio delays, if you have desync'ed audio.		Script	IanB
AddAudio	An AddAudio function that adds silent audio to a clip. Needed for CCE 2.50 users.		Script

[edit] As Yet Unclassified

Filter	Description	Color format	Plugin / Script	Author
Adjust	Generic Y-Channel mapping. Can define a function for the Y Channel.	YUY2, RGB32, RGB24	Plugin
Anaglypher	A plugin for combining stereopairs into single anaglyph image	RGB24, RGB32	Plugin	Shura Luberetsky
Average	Weighted average of any number of clips (fast).	YV12, YUY2, RGB24, RGB32	Plugin
BorderControl	Add smeared borders instead of a solid if wanted.		Plugin
BeforeAfter			Script
BeforeAfterDiff			Plugin
BeforeAfterLine			Plugin
Call	Call an external program from the script.		Plugin
Colorit	Color a black and white image or recolor a color image.		Plugin
CutFrames	Cut a range of frames from a single a/v clip. Opposite of Trim with extras.		Script
DCT	see [40]		Plugin
DeBlot	Color Blot Reduction.	YUY2,YV12	Plugin
FillMargins	Fills the four margins of a video clip with the outer pixels of the unfilled portion. It takes integer 4 parms specifying the size of the left, top, right, and bottom margins.	YV12	Plugin
GetSystemEnv			Plugin
GraMaMa	Gradient Mask Maker	YV12	Plugin	Template:Author/E-Male and Wilbert Dijkhof
LBKiller			Plugin
LTSMC			Plugin
MCNR_simple2			Plugin
NeuralNet			Plugin
PseudoColor	see [41]		Plugin
Reform	see [42]		Plugin
RGBManipulate	see [43]		Plugin
SceneChangeLavc	see [44]		Plugin
SlopeBend			Plugin
Soothe			Plugin
UnSmooth			Plugin
VinVerse	An effective Function against (residual) combing, by Didée. Useful after deinterlaceing.	YV12, YUY2	Plugin / Script
WaterShed	see [45]		Plugin
Tracking	demo at Youtube. Use computer vision to track objects in the video, and produce ConditionalReader input.		Plugin	Shlomo Matichin