Velocity pass, "max velocity last frame" not working.

[evanerichards]

I'm trying to render a velocity pass but not matter what frame I'm on when I render out the velocity pass to find out what the max velocity was last frame it always says 0.

Any idea why that would be the case?

I'm on V-Ray for Maya version 2.25.01, revision 22441

[Morbid Angel]

works fine for me in revision 22443 from Oct 18 2012

[evanerichards]

Ok. I just created a new scene a just made a single sphere, keyframed it and the "max velocity last frame" worked fine.

So, the new question is, what would cause that not to work in a scene? There are many things moving. Many of them are parented to other things but I don't feel like that should cause any problems with the max velocity per frame.

[vlado]

I'm trying to render a velocity pass but not matter what frame I'm on when I render out the velocity pass to find out what the max velocity was last frame it always says 0.

Works fine for me too - do you have a scene where it does not?

Best regards,
Vlado

[evanerichards]

That is what I have.
Can I send it to someone so they can take a peak?

[Morbid Angel]

try delete vraySettings node and vray will make a new one, see if that helps.

[evanerichards]

I found the problem!!!

So, I was rendering on the farm. But due to this problem we've been having where the local computer renders buckets much darker we had unchecked the "use local machine" option.
When I checked that back on, it seemed to work fine. I guess the farm can't calculate the Max Velocity Last frame.

Good to know.

Thanks!

[vlado]

Ah, thanks for the pointer; will make a note to fix it.

Best regards,
Vlado

[evanerichards]

Awesome.
You guys are the best!