RealFlow Motion Blur

[momade]

Hello everyone.
We are working on a commercial project, which includes lots of RealFlow simulations. All looks fine and works great but we are puzzled about a propper workflow for REAL RealFlow motion blur within C4D and octane. Does anyone have a hint how to achive nice results?

Thanks in advance.

Br.
Moritz

[mikinik]

look my posts, will find answer.

[aoktar]

Plugin currently just support motion blurs on constant topology. If your vertex counts are changing that will not produce proper mblur and will cancel it. So what we need to obtain. That's the vector motion blur support for this kind of objects.
Octane actually has this feature, but it was not theorically possible on many situations of plugin in C4D. I'll look to new functions for motion blur which comes with R17. But it's not in very close future.

[momade]

look my posts, will find answer.

Hi miknik.
Your Solution sounds very interesting. Thank you for your help!

In my case the stitched alembic file actually produces vertex motion blur, yet it is of no use and preparation times / render times per frame explode:

With C4D's "use guids on motion blur" enbaled, there is no motion blur any more and there is 0 [ZERO] additional preparation time:

@ miknik: How did you produce this? Was there a constant point/vertex count? The motion blur result looks stunning! Do I understand right, that this motion blur ONLY works in StandAlone?
viewtopic.php?f=27&t=50123&p=248832#p248832


@aoktar: viewtopic.php?f=27&t=50123&p=248832#p248832 How is this result possible?

Best reguards.
Mo

[aoktar]

As i said that's possible by vertex speed vectors.

[momade]

As i said that's possible by vertex speed vectors.

Ok. I understand now.
Do I need to export these vertex speed vectors from RealFlow and will Octane for C4D then read these vectors via RF-Plugin or via stitched alembic?

Br.
Mo

[aoktar]

As i said that's possible by vertex speed vectors.

Ok. I understand now.
Do I need to export these vertex speed vectors from RealFlow and will Octane for C4D then read these vectors via RF-Plugin or via stitched alembic?

Br.
Mo

Unfortunately plugin doesn't have a interface to read this values. I have tryed to explain it on my previous post. I'll look for possibilities with new motion blur sdk of C4D. I'm afraiding that it can be possible just for animation renderings not in LV.

[momade]

As i said that's possible by vertex speed vectors.

Ok. I understand now.
Do I need to export these vertex speed vectors from RealFlow and will Octane for C4D then read these vectors via RF-Plugin or via stitched alembic?

Br.
Mo

Unfortunately plugin doesn't have a interface to read this values. I have tryed to explain it on my previous post. I'll look for possibilities with new motion blur sdk of C4D. I'm afraiding that it can be possible just for animation renderings not in LV.

ok. thank you aoktar. sorry for my missunderstanding.
if i render the same sim with the RF_importer to C4D's Phiysical render with its motion blur activated, i renders just fine. im in latest R16. so the information must be there somewhere...

or will it be possible to export my file from c4d to standalone and render the full animation (moving objects, moving camera, realflow sim with vertx speed vectors) with motion blur there?

[momade]

ah.

viewtopic.php?f=33&t=44704&start=130#p229686

is it true, that the v-channel in RF-export only exports the speed (v) of each particles, but the mesh, generated by i.e. the RF C4D-plugin does not have vertex speeds anymore?
then i understand why octane does not render vertex motion blur.

but C4D physical renderer still does...

[momade]

so here are two beautiful examples of vertex motion blur from RF meshes.
so it IS possible, at least in stand alone. I just have to figure aout how the set up my ABC export.

viewtopic.php?f=33&t=44704&p=229784#p229840
viewtopic.php?f=33&t=44704&p=229784#p229971