Cloud animation frame corruption

[ptterrgen]

Hi there,

I'm rendering an animation above some clouds, mostly all of the 450 frames of the animation render fine, but I have 2-3 frames which seem to be corrupted, even when I try to render them as stills, they have a weird grainy noise through them.

Any ideas why this is? -image attached.

[attachimg=1]

[Oshyan]

Possibly undersampled extreme motion blur? Does the camera view change dramatically on these frames? Does it render the same if you disable motion blur?

- Oshyan

[ptterrgen]

Great, thanks. Disabling motion blur fixed it.

Must be something going on between those frames with the imported camera affecting the motion blur.

thanks again.

[Oshyan]

Yes, very likely there is an extreme rotation where e.g. the camera flips over, goes past 360 degrees of rotation, etc. and this is causing a high degree of motion blur that is difficult to sample and thus noisy. Ideally the camera problem would be resolved, which would address the core issue.

- Oshyan