Fumefx Motionblur in Vray

[ralphr]

Excuse me if the question is silly but I'm having hard time getting motionblur to render on my sims while using Vray now I have the obvious question if this is even possible or does mblur just work with scanline?


Cheers,
Ralph

[Jordan]

Vray motion blurs all atmospherics very well... but the problem is that fumeFX's velocities arent passed to vray, vray only sees the one frame of simulation and then applies camera motion blur to it. You would have to save the velocity into the fxd then render a velocity render element to add motion blur in post.

[finalight]

I can testify to using the velocity render element. Though post optical-based motion blur such as using Reelsmart has a really good algorithm for recognizing movement over several frames, in many cases it really can't beat the v.r.e. for complex movement such as when fume features are crossing each other in opposing directions.

[Jordan]

Also Nuke has the Optical flow node which I have seen have good results on analyzing the rendered frame and giving it vectors