Esxi running macos For selur

[Selur]

Looking at the QTGMC interface in Avisynth:

function QTGMC( clip Input, string "Preset", int "TR0", int "TR1", int "TR2", int "Rep0", int "Rep1", int "Rep2", string "EdiMode", bool "RepChroma", \
                    int "NNSize", int "NNeurons", int "EdiQual", int "EdiMaxD", string "ChromaEdi", int "EdiThreads", clip "EdiExt", float "Sharpness", \
                    int "SMode", int "SLMode", int "SLRad", int "SOvs", float "SVThin", int "Sbb", int "SrchClipPP", int "SubPel", int "SubPelInterp", \
                    int "BlockSize", int "Overlap", int "Search", int "SearchParam", int "PelSearch", bool "ChromaMotion", bool "TrueMotion", int "Lambda", \
                    int "LSAD", int "PNew", int "PLevel", bool "GlobalMotion", int "DCT", int "ThSAD1", int "ThSAD2", int "ThSCD1", int "ThSCD2", \
                    int "SourceMatch", string "MatchPreset", string "MatchEdi", string "MatchPreset2", string "MatchEdi2", int "MatchTR2", \
                    float "MatchEnhance", int "Lossless", int "NoiseProcess", float "EZDenoise", float "EZKeepGrain", string "NoisePreset", string "Denoiser", \
                    int "FftThreads", bool "DenoiseMC", int "NoiseTR", float "Sigma", bool "ChromaNoise", val "ShowNoise", float "GrainRestore", \
                    float "NoiseRestore", string "NoiseDeint", bool "StabilizeNoise", int "InputType", float "ProgSADMask", int "FPSDivisor", \
                    int "ShutterBlur", float "ShutterAngleSrc", float "ShutterAngleOut", int "SBlurLimit", bool "Border", bool "Precise", string "Tuning", \
                    bool "ShowSettings", string "GlobalNames", string "PrevGlobals", int "ForceTR", \
                    val "BT", val "DetailRestore", val "MotionBlur", val "MBlurLimit", val "NoiseBypass", float "Str", float "Amp", bool "TV_range", bool "useEdiExt", int "DftDither", bool "lsbd", bool "lsb", bool "n16", bool "keep_tv_range", String "device_type", int "device_id" )

source: https://github.com/realfinder/AVS-Stuff/...QTGMC.avsi

and QTGMC in Vapoursynth:

def QTGMC(Input, Preset='Slower', TR0=None, TR1=None, TR2=None, Rep0=None, Rep1=0, Rep2=None, EdiMode=None, RepChroma=True, NNSize=None, NNeurons=None, EdiQual=1, EdiMaxD=None, ChromaEdi='',
          EdiExt=None, Sharpness=None, SMode=None, SLMode=None, SLRad=None, SOvs=0, SVThin=0.0, Sbb=None, SrchClipPP=None, SubPel=None, SubPelInterp=2, BlockSize=None, Overlap=None, Search=None,
          SearchParam=None, PelSearch=None, ChromaMotion=None, TrueMotion=False, Lambda=None, LSAD=None, PNew=None, PLevel=None, GlobalMotion=True, DCT=0, ThSAD1=640, ThSAD2=256, ThSCD1=180, ThSCD2=98,
          SourceMatch=0, MatchPreset=None, MatchEdi=None, MatchPreset2=None, MatchEdi2=None, MatchTR2=1, MatchEnhance=0.5, Lossless=0, NoiseProcess=None, EZDenoise=None, EZKeepGrain=None,
          NoisePreset='Fast', Denoiser=None, FftThreads=1, DenoiseMC=None, NoiseTR=None, Sigma=None, ChromaNoise=False, ShowNoise=0.0, GrainRestore=None, NoiseRestore=None, NoiseDeint=None,
          StabilizeNoise=None, InputType=0, ProgSADMask=None, FPSDivisor=1, ShutterBlur=0, ShutterAngleSrc=180, ShutterAngleOut=180, SBlurLimit=4, Border=False, Precise=None, Tuning='None',
          ShowSettings=False, ForceTR=0, TFF=None, pscrn=None, int16_prescreener=None, int16_predictor=None, exp=None, alpha=None, beta=None, gamma=None, nrad=None, vcheck=None, opencl=False, device=None):

source: https://github.com/Selur/VapoursynthScri...avsfunc.py

I would say: Yes, 'Sigma' in Avisynth and Vapoursynth should do the same thing and yes Sigma is basically used as denoising strengh (not the denoising threshold), note that depending on the denoiser used Sigma might get changed internally.
-> so without knowing the rest of the used parameters 'Sigma' on it's own doesn't really help.

And before you ask: No, Hybrid does not offer to overwrite the value of Sigma.
(Personally I don't use QTGMC for filtering, I prefer to use the filters separately.)

Cu Selur