Animation Noise

[AngelStudio]

Hi,
I have this animation and i have problems with noise in the grass and some flickering in the grids of the windows.

My settings are:

Vray 3.70

BF+LC
Bucket Image Sampler : min 1 max 12 noise 0.02

LC
Sub.4000
Sample: 0.01
Scale: Screen
Ratrace: 8.0


The grass is from Forest Pack, i try LC pre calc and single file the result is the same.

The render time was 20 min for frame at 1920x1080, any suggestions to clean the noise and fickering ?

[olika]

What come to my mind first is checking the geometry. If the files comes form a different app then there is a change you have some unlucky geometry situation here. Overlapping objects or surfaces sitting perfectly on each other etc. A second thing to check can be when you turn off adaptive in the dome light. Had some sprinkles there in specular a few days ago in an outdoor scene. Turning it off solved it. So hoping one of those things helps!

[Morbid Angel]

With animation you would need to lower the noise threshold to at least 0.01 and raise min/max subdivs. What works depends on your scene, but I would say min 3-4, max 16-24 and noise threshold 0.01 or 0.008 would work. The flickering you are seeing is happening in the blackest parts of the image (in grass) which means only min of 1 subdivs is being reached there. For the LC same thing, retrace of 8 is enough for animation but what I would do is use camera path and calculate LC first to a file, then load the lc saved file and render animation, this way you will not have to calculate LC per frame and it will produce a more stable result.