View source for DDCR

{{FilterCat4|External_filters|Scripts|Restoration_filters|Rainbow & Dot Crawl Removal}}
{{Filter3
|1=Reel.Deal
|2=v1.0.0
|3=[https://github.com/Reel-Deal/AviSynthPlus-Scripts/blob/main/ddcr.avsi ddcr.avsi]
|4=Rainbow & Dot Crawl Removal
|5=
|6=}}

== 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 [https://forum.doom9.org/showthread.php?p=1584186#post1584186 here].
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== 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.<br>
* [[frfun7]]
*[[MaskTools2]]
*[[RgTools]]
*[[sbr]]
*[[Vinverse]]
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== [[Script variables|Syntax and Parameters]] ==
:{{Template:FuncDef|DDCR (clip input, int "mode", float_array "frfun7_params")}}
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::{{Par2|c|clip| }}
:::Input clip; all 8 bit Y/YUV colorspaces are supported. [[FAQ_different_types_content#How_do_I_recognize_progressive.2C_interlaced.2C_telecined.2C_hybrid_and_blended_content.3F|Progressive]] input only.
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::{{Par2|mode|int|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.
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::{{Par2|frfun7_params|float_array|[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.
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== Examples ==
DDCR with default settings:
 [[AviSource]]("Blah.avi")
 TFM(pp=0)
 TDecimate()
 DDCR(mode=1, frfun7_params=[1.01, 8.0, 1, 0, 3])
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== Changelog ==
 Version       Date            Changes<br>
 v1.0.0        2023/03/03      - Initial release.
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==External Links==
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