Installing avisynth on Ubuntu 16.04

[Selur]

@djcj: An update would be nice:
Here's list of filters&co that come in mind:

Plugin Name Website
addgrain https://github.com/HomeOfVapourSynthEvol...h-AddGrain
awarpsharp2 https://github.com/dubhater/vapoursynth-awarpsharp2
bifrost https://github.com/dubhater/vapoursynth-bifrost
bilateral https://github.com/HomeOfVapourSynthEvol...-Bilateral
ctmf https://github.com/HomeOfVapourSynthEvol...Synth-CTMF
d2vsource https://github.com/dwbuiten/d2vsource
d2vwitch https://github.com/dubhater/D2VWitch
dctfilter (renewed) https://github.com/HomeOfVapourSynthEvol...r/releases
deblock https://github.com/HomeOfVapourSynthEvol...th-Deblock
depan https://github.com/HomeOfVapourSynthEvol...ynth-DePan
dfttest https://github.com/HomeOfVapourSynthEvol...th-DFTTest
eedi2 https://github.com/HomeOfVapourSynthEvol...ynth-EEDI2
ffms2 and ffmsindex https://github.com/FFMS/ffms2
fft3dfilter https://github.com/myrsloik/VapourSynth-FFT3DFilter
flash3kyuu_deband https://github.com/SAPikachu/flash3kyuu_deband
fluxsmooth https://github.com/dubhater/vapoursynth-fluxsmooth
fmtconv https://github.com/EleonoreMizo/fmtconv
knlmeanscl https://github.com/Khanattila/KNLMeansCL
lsmashsource https://github.com/VFR-maniac/L-SMASH-Wo...apourSynth
msmoosh https://github.com/dubhater/vapoursynth-msmoosh
mvtools https://github.com/dubhater/vapoursynth-mvtools
nnedi3 https://github.com/dubhater/vapoursynth-nnedi3
SangNom2 https://bitbucket.org/James1201/vapoursynth-sangnom/
tdeintmod https://github.com/HomeOfVapourSynthEvol...-TDeintMod
temporalsoften https://github.com/dubhater/vapoursynth-temporalsoften
tonemap https://github.com/ifb/vapoursynth-tonemap
TTempSmooth https://github.com/HomeOfVapourSynthEvol...TempSmooth
vaguedenoiser https://github.com/HomeOfVapourSynthEvol...ueDenoiser
yadifmod https://github.com/HomeOfVapourSynthEvol...h-Yadifmod
bilateralgpu https://github.com/WolframRhodium/Vapour...lateralGPU
degrainmedian https://github.com/dubhater/vapoursynth-degrainmedian
descale https://github.com/Irrational-Encoding-W...th-descale
dotkill https://github.com/myrsloik/DotKill
eedi3m https://github.com/HomeOfVapourSynthEvol...ynth-EEDI3
fieldhint https://github.com/dubhater/vapoursynth-fieldhint
ftf https://github.com/IFeelBloated/Fix-Telecined-Fades
it https://github.com/HomeOfVapourSynthEvol...urSynth-IT
nnedi3cl https://github.com/HomeOfVapourSynthEvol...h-NNEDI3CL
rawsource https://github.com/chikuzen/vsrawsource
RemapFrames https://github.com/Irrational-Encoding-W...emapFrames
retinex https://github.com/HomeOfVapourSynthEvol...th-Retinex
scxvid https://github.com/dubhater/vapoursynth-scxvid
ssiq https://github.com/dubhater/vapoursynth-ssiq
TCanny https://github.com/HomeOfVapourSynthEvol...nth-TCanny
templinearapproximate https://bitbucket.org/mystery_keeper/tem...rsynth/src
vfrtocfr https://github.com/Irrational-Encoding-W...h-VFRToCFR
waifu2x-w2xc https://github.com/HomeOfVapourSynthEvol...ifu2x-w2xc
znedi3 https://github.com/sekrit-twc/znedi3

Most are already covered in your list bug some are not.

Cu Selur