Hi, I recently made an animation in Blender, and when I render my final output. There’s this weird, noisy, and Gaussian texture on the output. Can anyone help me with that?
Here is link to that render: https://drive.google.com/drive/folders/1JOfW4gzeznmOkUcCZs_iBY5b0CkDJ-t3?usp=drive_link
The flickering is thought to be caused by noise.
But it doesn’t seem very clearly marked.
There may be a problem with the material, but my personal opinion is presumed to be due to the noise threshold setting.
If the corresponding value is high, it will allow a lot of noise.
If you set the rendering sample to 2048, but noise threshold is enabled, we will not render it until the 2048 sample. 0.1 is considered a high acceptance value.
The default value for noise threshold is 0.01.
https://docs.blender.org/manual/en/latest/render/cycles/render_settings/sampling.html
※ When using cycles rendering, it is difficult to completely eliminate noise problems; compromise between rendering speed and quality.
Welcome!
I agree with @oo_1942, this is likely caused by the sampling settings. Interior scenes are more difficult to render than exteriors, especially if a lot of the light is bounced off walls and ceilings rather than illuminating objects directly (which seems to be the case, your ceiling has lights hidden in it, doesn’t it?).
Besides this, you should know that animations need more quality than still images. An image that looks fine on its own can break in an animation if the camera is moving, because the denoiser interprets each frame slightly differently. This is an infamous problem called temporal coherence.
This is generally solved by reducing the amount of noise in the render. This can be done by increasing the sampling quality and making sure there aren’t obvious sources of noise in the scene (ex. glass panes should have their shadows disabled). In your scene, the sampling settings are probably the main issue.
