Animation blurred noise even with denoiser

[bilko123]

Hi all,

I've got an animation to render, I give each frame approx 30 seconds and then apply the Intel denoiser (0.8), but there seems to be a strange issue where the denoised areas flicker but in a blurred way. Any ideas? I've uploaded the video here:

https://we.tl/t-Rb5p9gjeg6

Settings wise (Some tips taken from various other threads):

Flicker free animation
Tent filter
Intel Denoiser (0.8)
Max Sample: 10
Max ray depth: 15
Sharpen / Blur: On
1080p render size.

I use calc new UHD per frame because of the moving door. Everything else default.

Appreciate any help thanks!

[romullus]

AI denoisers (Intel and Nvidia) are not well suited for animations, since they lack temporal consistency. You'd probably get better result with Corona HQ denoiser. On the other hand, if you render 1080p frame for only 30 seconds, then the image will be so noisy, that most likely any denoiser won't guarantee you good results.

[bilko123]

I thought I saw a recommendation for the intel/nvidia denoiser on an animation optimisation thread but that temporal consistency sounds about right in terms of the issue I'm seeing.

I have a good CPU (3990X / 16s corona bench) but will up to a minute render time, should be plenty. Thanks for your advice.