F3kgrain

Latest revision as of 18:15, 10 September 2020

[edit] Description

Another 8/16-bit luma adaptive grain generator.

[edit] Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• [x64]: AviSynth+
• Progressive input only
• Supported color formats: YV12, YV16, YV24

[edit] Required Plugins

Latest version of the following plugins are recommended unless stated otherwise.

• Dither
• f3kdb
• MaskTools2
• RgTools - recommended drop-in replacement for RemoveGrain!

[edit] Syntax and Parameters

f3kgrain (clip input, int "luma", int "chroma", int "mode", int "temp", int "adapt", float "sigma", bool "lsb")

clip  input =

Input clip.

int  luma = 64

Luma grain strength; 0 disables processing, 4096 is the maximum value (heavy grain!).

int  chroma = 64

Chroma grain strength; 0 disables processing, 4096 is the maximum value (heavy and colorful grain!).

int  mode = 1

random_algo_grain mode:

• 0 - old algorithm,
• 1 - uniform distribution,
• 2 - Gaussian(normal) distribution.

int  temp = 50

Temporal stabilization for grain (the higher, the more calm).

Range: 0 to 100

• 0 = nervous
• 50 = default (half and half)
• 100 = static

int  adapt = 64

Brightness threshold for adaptive grain mask.

Range: -1 to 255

• -1 = off
• 0 = input
• 64 = default
• 255 = invert

The higher, the less grain in dark areas & the more grain in bright areas.

float  sigma = 1.0

Standard deviation of Gaussian distribution mode.

bool  lsb =

Is the input clip normal 8-bit or stacked 16-bit? If lsb=true output clip will be stacked 16-bit.

By default the input clip's width is divided by the height, if is greater than 1.2 then it's set to false otherwise is set to true.

[edit] Examples

f3kgrain with default settings:

AviSource("Blah.avi")
f3kgrain(luma=64, chroma=64,mode=1, temp=50, adapt=64, sigma=1.0)

[edit] Changelog

Version      Date            Changes

v0.4         2012-05-21      - Add support for 8-bit YV16/YV24
                             - Add support for setting sigma(standard deviation) of Gaussian distribution
v0.3         2012-04-06      - Add support for 16-bit input and output, need dither.dll v1.15.0 or newer
v0.2         2012-03-14      - Synchronize argument names with parameter names of f3kdb v1.5.0
v0.1         2012-03-02      - First release

[edit] Archived Downloads

[edit] External Links

• NMM-HD Forum - f3kgrain discussion [Chinese].

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