OTOY Forums

Hi,
Motion blur causes flickering in complex specular material (glass simple, no scatter).
No motion blur (shutter speed = 0) and no more problem.
Which parameter to deal with to get rid of this flicking ? i d like to keep the mb effect, or at least understand better.
Cheers

AdrienG wrote:Hi,
Motion blur causes flickering in complex specular material (glass simple, no scatter).
No motion blur (shutter speed = 0) and no more problem.
Which parameter to deal with to get rid of this flicking ? i d like to keep the mb effect, or at least understand better.
Cheers

Hi Adrien,

Thank you for the post.
Have you tried increasing the **Samples Per Frame** from the Vertex animated mesh>Shape node>AE editor>Octane Rollout.
Would you please share a sample scene for us to investigate if this does not fix?

cheers

thanks for your answer, i will try your recommandation now.
However, the deactivation of motion blur work seemed to attenuate the flickering on one shot but absolutely not on other shots.
See attachment video.
cheers

Ok i found the problem, very simple.
There's an overlap or very close distance between the specular mesh and a solid diffuse base/fixation.
Adding some distance between them fixed it. RayEpsilon could have been an other parameter to deal with i guess if there's any existing gap.

Ray Epsilon is global, it’s rarely needed, typically when the scene scale has been wrongly setup, is small or large due to the context. It’s a common misconception to think of RE as some sort of magic tweak that fixes user-errors.