DDCR

Abstract
Author	Reel.Deal
Version	v1.0.0
Download	ddcr.avsi
Category	Rainbow & Dot Crawl Removal
License
Discussion

Description

A purely spatial dot crawl removal script for AviSynth+. Only the luma channel is processed, chroma is simply copied. DDCR stands for Didée's Dot Crawl Remover. Modified from here.

Requirements

• [x86/x64] AviSynth+ v3.7.2 or greater
• Supported color formats: all 8-bit Y/YUV colorspaces

Required Plugins

Latest versions of the following filters are recommended unless stated otherwise.

• frfun7
• MaskTools2
• RgTools
• sbr
• Vinverse

Syntax and Parameters

DDCR (clip input, int "mode", float_array "frfun7_params")

clip  c =

Input clip; all 8 bit Y/YUV colorspaces are supported. Progressive input only.

int  mode = 1

Processing mode:

• 1 : post IVTC
• 2 : post deinterlacing

Filter should be used right after IVTC or deinterlacing.

With truly interlaced content, QTGMC does a good job at removing most of the dot crawl, mode 2 helps remove the remaining dot crawl.

float_array  frfun7_params = [1.01, 8.0, 1, 0, 3]

frfun7 parameters, they must be given in the correct order.

• lamda (float) : adjust the power of the local denoising.
• T (float) : limits the max luma denoising power for edges.
• P (int)  : 0 is faster but lower quality, 1 is slower but better quality.
• TP1 (int)  : threshold which affects P=1.
• R1 (int)  : first past radius; valid values are 2 or 3.

If only the first value is given, the rest will be set to their default, and so on. See frfun7 documentation for full details.

Examples

DDCR with default settings:

AviSource("Blah.avi")
TFM(pp=0)
TDecimate()
DDCR(mode=1, frfun7_params=[1.01, 8.0, 1, 0, 3])

Changelog

Version       Date            Changes

v1.0.0        2023/03/03      - Initial release.

External Links

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