need help removing some weired type of noise please?

[kopmjj]

Hello im not sure how to get rid of this i tried fft3dgpu(plane=3,sigma=30) to remove this noise as i thought it was color noise, but this didn't work, i tried deblocking and gradfunb and also adding grain but its still kinda visible.

the only thing i can do is darken it but then i lose the brightness from the rest of the picture, so i wanna keep this brightness and lose the artifact?

can someone tell me what type of noise it is so then i can search this forum myself thanks.

heres the pic i trimmed it to show the damage.




11034

[n0an]

Pic doesn't load for me. Post a 10-15s sample source clip on mediafire/megaupload.

[Gser]

Try using the noise print function on FFT and if that doesn't help try MC_Spudz or McTemporalDenoise.

[kopmjj]

Try using the noise print function on FFT and if that doesn't help try MC_Spudz or McTemporalDenoise.

thanks mcspuds kinda worked but takes ages to render very slow.

[CruNcher]

It looks like typical Quantization problems happened in the compression part most probably noise wasn't well canceled out and now you got blocks there, this effect can be amplified by using the Histogram function of Avisynth in Luminance mode (it's can show you before what can be problematic areas to deal with) Luma Noise inside the source will always cause these kinds of issues if the bitrate is to low or no AQ is being used, so if your target is very low bitrate then you have to denoise properly to avoid such compression problems, (or use heavy compression settings with RD and a lot of Psy).
Btw there are more threads about this Visual Problem on Doom9 and how it affects the Visual Perception in Dark Scenes, i call it Quantization Fog of War effect ;)