Another "QTMGC" mess 🥴

[NoahLoot]

My dear,

If QTGMC is enabled, i get the following errors when i hit preview !

2026-06-30 00:55:50.815 Plugin C:/Program Files/Hybrid/64bit/Vapoursynth/Lib/site-packages/vapoursynth/plugins2/vsnlm_ispc.dll is using API3 which is deprecated and will be removed shortly. 2026-06-30 00:55:50.818 Failed to evaluate the script: Python exception: Failed to load C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/FFT3DFilter/fft3dfilter.dll. GetLastError() returned 126. The file you tried to load or one of its dependencies is probably missing. Traceback (most recent call last): File "vapoursynth.pyx", line 3623, in vapoursynth._vpy_evaluate File "vapoursynth.pyx", line 3624, in vapoursynth._vpy_evaluate File "E:\TEMP\tempPreviewVapoursynthFile00_55_50_062.vpy", line 15, in core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/FFT3DFilter/fft3dfilter.dll") File "vapoursynth.pyx", line 3353, in vapoursynth.Function.__call__ vapoursynth.Error: Failed to load C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/FFT3DFilter/fft3dfilter.dll. GetLastError() returned 126. The file you tried to load or one of its dependencies is probably missing.

&




I dunno ¯\_(ツ)_/¯ 

sort of speak.. 

Interestingly, when i use QTGMC in conjuction with the TemporalDegrain filter it works, no errors are show...🤔💭
But whitout TemporalDegrain (unchecked), hybrid acts up again !?

The same goes for TemporalDegrain v2 ...


tanks,

[Selur]

will look at it next week, away from computers atm.

[NoahLoot]

will look at it next week, away from computers atm.

You are very wise to do that.

If only more people followed that example   .



CU Noah Aloot 

[NoahLoot]

My dear,

If QTGMC is enabled, i get the following errors when i hit preview !

2026-06-30 00:55:50.815 Plugin C:/Program Files/Hybrid/64bit/Vapoursynth/Lib/site-packages/vapoursynth/plugins2/vsnlm_ispc.dll is using API3 which is deprecated and will be removed shortly. 2026-06-30 00:55:50.818 Failed to evaluate the script: Python exception: Failed to load C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/FFT3DFilter/fft3dfilter.dll. GetLastError() returned 126. The file you tried to load or one of its dependencies is probably missing. Traceback (most recent call last): File "vapoursynth.pyx", line 3623, in vapoursynth._vpy_evaluate File "vapoursynth.pyx", line 3624, in vapoursynth._vpy_evaluate File "E:\TEMP\tempPreviewVapoursynthFile00_55_50_062.vpy", line 15, in core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/FFT3DFilter/fft3dfilter.dll") File "vapoursynth.pyx", line 3353, in vapoursynth.Function.__call__ vapoursynth.Error: Failed to load C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/FFT3DFilter/fft3dfilter.dll. GetLastError() returned 126. The file you tried to load or one of its dependencies is probably missing.

&




I dunno ¯\_(ツ)_/¯ 

sort of speak.. 

Interestingly, when i use QTGMC in conjuction with the TemporalDegrain filter it works, no errors are show...🤔💭
But whitout TemporalDegrain (unchecked), hybrid acts up again !?

The same goes for TemporalDegrain v2 ...


tanks,

Uhm This ☝🏽

Could you reproduce the problem?  Did you take a look at it?

On a side note, this happend when the source is of SD content fyi..


thanks,

[Selur]

I think I fixed that,... try latest dev.

Cu Selur

[NoahLoot]

I think I fixed that,... try latest dev.

Cu Selur

I very much like to try it out for myself.
But ermm.. here's the thing...  Googledrive has reached it maximum velocity .. for the past 2 day's ¯\_(ツ)_/¯ !!



Tanks,

[NoahLoot]

I jus have tried dev 2026.07.13.1 regarding issue with qtgmc.

Good news is no errors anymore..  Bad news, the KNLmeans denoise filter / QTGMC filter isn't doing anything (enhance image) at all when previewed  



cheers,

[Selur]

The Denoiser will be used, if NoiseProcess > 0.

NoiseProcess: Bypass mode. 0 = disable 1 = denoise source & optionally restore some noise back at end of script [use for stronger denoising] 2 = identify noise only & optionally restore some after QTGMC smoothing [for grain retention / light denoising]

source
NoiseProcess by default is not set, but can be set, either through the 'Addition' or by enabling 'EZDenoise' and setting it to a value greater 0 or preset 'placebo' or 'very slow' are used.

As I remember, this is how QTGMC has always worked.
I don't think I changed this behavior in any of my QTGMC adjustments,...
=> I don't think this is a bug.

Cu Selur

[NoahLoot]

The Denoiser will be used, if NoiseProcess > 0.

        NoiseProcess: Bypass mode.             0 = disable             1 = denoise source & optionally restore some noise back at end of script [use for stronger denoising]             2 = identify noise only & optionally restore some after QTGMC smoothing [for grain retention / light denoising]

source
NoiseProcess by default is not set, but can be set, either through the 'Addition' or by enabling 'EZDenoise' and setting it to a value greater 0 or preset 'placebo' or 'very slow' are used.

As I remember, this is how QTGMC has always worked.
I don't think I changed this behavior in any of my QTGMC adjustments,...
=> I don't think this is a bug.

Cu Selur

You've lost me there!

Actually, in earlier builds of hybrid i just have to enable the QTGMC filter under denoise tab, then enable "EZdenoise" option, adjust some denoise settings and bam, it did it's magic ..

I didn't had to do or enable anything else in order for the qtgmc filter to work properly   



cheers,

[Selur]

It still does here.
QTGMC custom no denoise:
   
QTGMC KNLMeansCL strength 1:
   
QTGMC KNLMeansCL strength 5:
   
QTGMC KNLMeansCL strength 15:
   
=> if you would care to share a proper bug report [INFO] Infos needed to fix&reproduce bugs,.. at least the debug output would show me what settings you are using.

Cu Selur