FFTSpectrum

Abstract
Author	Asd-g
Version	v1.0.0
Download	FFTSpectrum-1.0.0.7z
Category	Debug filter
License	GPLv2
Discussion

Description

FFTSpectrum is a filter that displays the FFT frequency spectrum of a given clip. Supposedly useful for determining original resolution of upscaled anime content.

This is a port of the VapourSynth plugin FFTSpectrum.

Requirements

• [x86] AviSynth+ or AviSynth 2.6
• [x64] AviSynth+
• Supported color formats: Y8, YV12, YV16, YV24, YV411

• FFTW 3.3.5 (fftw-3.3.5-dll32.zip or fftw-3.3.5-dll64.zip)

*** 32-bit libfftw3f-3.dll needs to be in the search path (C:\Windows\SysWOW64 64-bit OS or C:\windows\system32 32-bit OS)

*** 64-bit libfftw3f-3.dll needs to be in the search path (C:\windows\system32 64-bit OS)

Syntax and Parameters

FFTSpectrum (clip, bool "grid")

clip   =

A clip to process. It must be in YUV 8-bit planar format.

bool  grid = true

Whether a grid with origin at the center of the image and spacing of 100 pixels should be drawn over the resulting spectrum.

Default: False.

Examples

FFTSpectrum with all default settings:

AviSource("Blah.avi")
FFTSpectrum(grid=false)

Changelog

Version      Date            Changes

v1.0.0       2020/11/02      - Initial release

External Links

• GitHub - Source code repository.

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