TweakColor

Abstract
Author	Trevlac
Version	2004/04/12
Download	[x86]: TweakColor.zip [x64]: TweakColor.rar
Category	Levels and Chroma
License	GPLv2
Discussion	Doom9 Forum

Description

TweakColor has the ability to target specific hue and saturation ranges for hue and saturation adjustments. For example, you can target highly saturated reds (> 75% saturated) and reduce just them, leaving things like skin tones alone.

Based on the built in Tweak filter.

Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• [x64]: AviSynth+
• Supported color formats: YUY2, YV12

Syntax and Parameters

TweakColor (clip, float "hue", float "sat", float "bright", float "cont", bool "coring", int "startHue", int "endHue", int "maxSat", int "minSat", int "smooth")

clip   =

Input clip.

float  hue = 0.0

Adjust the color hue of the image.

• hue>0.0 shifts the image towards red.
• hue<0.0 shifts the image towards green.

Range -180.0 to +180.0, default=0.0

float  sat = 1.0

Adjust the color saturation of the image by controlling gain of the color channels.

• sat>1.0 increases the saturation.
• sat<1.0 reduces the saturation.

Use sat=0 to convert to GreyScale.

Range 0.0 to 10.0, default=1.0

float  bright = 0.0

Change the brightness of the image by applying a constant bias to the luma channel.

• bright>0.0 increases the brightness.
• bright<0.0 decreases the brightness.

Range -255.0 to 255.0, default=0.0

float  cont = 1.0

Change the contrast of the image by multiplying the luma values by a constant.

• cont>1.0 increase the contrast (the luma range will be stretched).
• cont<1.0 decrease the contrast (the luma range will be contracted).

Range 0.0 to 10.0, default=1.0

bool  coring = true

When set to true (the default), the luma (Y) and chroma are clipped to TV-range;

When set to false, the luma and chroma are unconstrained.

int  startHue = 0

Starting hue to effect, in degrees. Exact magenta is ~ 50 degrees.

Colors are 60 degrees apart. +/-30 around center covers full color.

Colors run clockwise: magenta(50), red(110), yellow(170), green(230), cyan(290), blue(350)

Range: 0 to 359, default=0

int  endHue = 359

Ending hue. If < startHue, we go clockwise.

Range: 0 to 359, default=359

int  maxSat = 115

Max saturation level to effect. Sat is in percents running from 115%-0%.

Default=115

int  minSat = 0

Min saturation level to effect. Must be < maxSat.

Default=0

int  smooth = 16

Interpolates past max/min sats to smooth out changes (avoid contours).

Range: 0-64, default=16

Examples

TweakColor with default settings:

AviSource("blah.avi")
TweakColor(hue=0.0, sat=1.0, bright=0.0, cont=1.0, coring=true, startHue=0, endHue=359, maxSat=115, minSat=0, smooth=16)

Changelog

Version         Date            Changes

2020/04/14      2020/04/20      - Update to AviSynth 2.6 api
                                - x64 binary only
                                - updated by videoh

2004/04/12      2004/04/12      - Initial release

Archived Downloads

Version	Download	Mirror
2020/04/14 (x64)	TweakColor.rar	TweakColor.rar
2004/04/12 (x86)	TweakColor.zip	TweakColor.zip

External Links

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