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Is the motion vector pass useless?

Posted: Wed Jun 07, 2017 6:34 am
by ChrisAngelius
Hey guys,

Noticing RSMB won't use the motion vector pass that octane generates. Can it only be used in Fusion/Nuke then?

The motion vector pass from Octane doesn't match what I get out of VRay or Physical, so not sure if it will even work in Nuke then.

Is there anyway to use the Octane MV in AE?

Re: Is the motion vector pass useless?

Posted: Wed Jun 07, 2017 6:59 am
by philmaron
Need alpha, mask it via beauty or use "lumince key"-effect and "key out everything darken then 1". Subcomp it and put rsmb on the nested composition.

Re: Is the motion vector pass useless?

Posted: Thu Jun 08, 2017 12:01 pm
by ChrisAngelius
This gets me halfway there so thank you.

Problem I'm having is that using either luma key or extract with a value of 1 removes ALL colour information. My movement is subtle, so my motion blur would be subtle as well, and this method crushes out any of that MV information. I can get it back by using levels beforehand and then applying luma key. But then I'm eyeballing by blur amt to match roughly to where it should be.

But I suppose it's avoidable by rendering with an alpha in future, which I should have done anyway tbh.

Thanks for your help!