http://avisynth.nl/index.php?action=history&feed=atom&title=FFTSpectrumFFTSpectrum - Revision history2026-07-15T17:38:08ZRevision history for this page on the wikiMediaWiki 1.19.24http://avisynth.nl/index.php?title=FFTSpectrum&diff=12147&oldid=prevReel.Deal: FFTSpectrum v1.02020-11-03T19:31:54Z<p>FFTSpectrum v1.0</p>
<p><b>New page</b></p><div>{{FilterCat5|External_filters|Plugins|Plugins_x64|Other_filters|Debugging/Diagnostic_filters}}<br />
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| 1={{Author/Asd-g}}<br />
| 2=v1.0.0<br />
| 3=[https://github.com/Asd-g/AviSynth-FFTSpectrum/releases/ FFTSpectrum-1.0.0.7z]<br />
| 4=Debug filter<br />
| 5=[https://github.com/Asd-g/AviSynth-FFTSpectrum/blob/main/LICENSE GPLv2]<br />
| 6=}}<br />
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== Description ==<br />
[[FFTSpectrum]] is a filter that displays the FFT frequency spectrum of a given clip. Supposedly useful for determining original resolution of upscaled anime content.<br />
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This is [https://github.com/Beatrice-Raws/FFTSpectrum a port of the VapourSynth plugin FFTSpectrum.]<br />
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== Requirements ==<br />
* [x86] [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.6]<br />
* [x64] [[AviSynth+]]<br />
*Supported color formats: [[Y8]], [[YV12]], [[YV16]], [[YV24]], [[YV411]]<br />
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* [http://www.fftw.org/install/windows.html FFTW 3.3.5] (<code>'''fftw-3.3.5-dll32.zip'''</code> or <code>'''fftw-3.3.5-dll64.zip'''</code>)<br />
:<span style="color:red">***</span> 32-bit <tt>[[libfftw3f-3.dll]]</tt> needs to be in the search path (<tt>C:\Windows\SysWOW64</tt> 64-bit OS or <tt>C:\windows\system32</tt> 32-bit OS)<br />
:<span style="color:red">***</span> 64-bit <tt>[[libfftw3f-3.dll]]</tt> needs to be in the search path (<tt>C:\windows\system32</tt> 64-bit OS)<br />
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== [[Script variables|Syntax and Parameters]] ==<br />
:{{Template:FuncDef|FFTSpectrum (clip, bool "grid")}}<br />
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::{{Par2| |clip| }}<br />
:::A clip to process. It must be in YUV 8-bit [[planar]] format.<br />
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::{{Par2|grid|bool|true}}<br />
:::Whether a grid with origin at the center of the image and spacing of 100 pixels should be drawn over the resulting spectrum.<br />
:::Default: False.<br />
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==Examples==<br />
FFTSpectrum with all default settings:<br />
[[AviSource]]("Blah.avi")<br />
FFTSpectrum(grid=false)<br />
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== Changelog ==<br />
Version Date Changes<br><br />
v1.0.0 2020/11/02 - Initial release<br />
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==External Links ==<br />
*[https://github.com/Asd-g/AviSynth-FFTSpectrum GitHub] - Source code repository.<br />
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