Hey Paul,

you mean that's the reason why Octane cannot acquire the motion vector via the Modo render cache?

Also I'm curious why Octane has a problem in the first place when the number of particles changes. Don't they have a unique ID to identify them from frame to frame?

But that's just me ...

In the standalone app (Octane Render Studio) the motion blur works fine - unfortunately that is not an option for me: I tried exporting one scene of the project (of ~20 scenes total) and canceled it after ~7% with a ~2GB Alembic file...

It seems that to export to the standalone app the Alembic file ...

Hey funk,
thx for looking into this!

That is unfortunate... :|

I think I understand why Octane would have a hard time calculating the velocity if not all of the particles are actually present in the previous/next frame (i.e. having varying number of transforms), but I really was hoping that the ...

...
Now I'm off to my next challenge - motion blur with replicators...
viewtopic.php?f=34&t=82829

Hi again!

I tried to follow the instructions under
https://render.otoy.com/forum/viewtopic.php?f=34&t=73940
to achieve motion blur with replicators.

I have this situation where the point count is different each frame (so the number of transforms differs from frame to frame, I'm using a Surface ...

Hey funk,
awesome - that works!!

Simply adding the Motion Vector Output in Modo's shader tree does the trick.
I would never have guessed that - especially because adding a motion vector output to Octane totally kills motion blur! Although it also makes sense somehow - it's the only way Octane can ...

Hey Paul,

thank you for looking into this!

Happy holidays!
J.

I just found an issue with the script code - the direct recursive call of checkAndAdvance is not ideal...(works, but can be problematic). Also I found out that fortunately on Windows it is not necessary to use the loathed backslashes in the path...:)

Corrected code:


#!/usr/bin/env python ...

Hey Paul,
many thx for getting back to me about this and for the pointers.

The processEvent() is not enough in this case - the frame won't be advanced...

But with a little digging into Qt/PySide I managed to get something working (see attached).
Currently the scene list is simply hard coded into ...

Hi,

I tried to follow
https://render.otoy.com/forum/viewtopic.php?f=34&t=73940
to make motion blur work with my deformer driven objects.

I have "Live Geometry Update" and "Reload Mesh Each Frame" activated on the item.

I have Camera Motion Blur and Object Motion Blur enabled in the Octane kernel ...