Blender renderman particles motion blur not working


I’m actually working on a scene, and i wanted to create a snowfall.

After i did this, i wanted to apply a motion blur on my particles (baked).

But the motion blur doesn’t worked. Also, i tried with a cube and applied a movement, and it worked.

My particles are baked. Also, i tried on cycles and i’m having the same issue.

I think i miss something.

Any ideas?

Thanks a lot!

Regards, Samih.

Keep in mind… more info is needed: show some images, settings, best is to provide a test scene to study :wink:

The particles are in green, and the cube, where i applied a locrotScale through different frames.

The motion blur affects the cube but not the particles.

Here’s with Cycles (w/o PRMan on this machine)

particles_mBlur_cycles.blend (1.9 MB)

And here’s PRMan, which also works fine, but you need to convert particle sim to keyframe animation.