Why all the sudden does motion blur work for liquids?

3D Studio Max Plugin (Export Script Plugins developed by [gk] and KilaD; Integrated Plugin developed by Karba)
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paride4331
Octane Guru
Posts: 3821
Joined: Fri Sep 18, 2015 7:19 am

Hi thekwen,
sorry for the delay to reply, I did some testing, using phoenix FD multipass motion blur seems to work, but with .abc I think you're right.
I'll talk to developers why octane should read velocity info, I saw it done in a C4D forum screenshot.
I think a modifier similar to OctaneVolume or OctaneParticle is needed.
Regards
Paride
2 x Evga Titan X Hybrid / 3 x Evga RTX 2070 super Hybrid
thekwen
Licensed Customer
Posts: 108
Joined: Sat Jun 01, 2013 2:26 pm

Hi thanks for reply paride.
For what i see, alembic from houdini wiht velocity:

Scene evaluation is taking hours (75% of tests) and then max crash

or

3dsmax crash directly (20% of tests)

or

motion blur sometimes seems to work but values are crazy (at 0.25 the motion blur is like i was on value like 10, at 0.24 no motion blur at all) (5% of tests)

Phoenix is cool but abc is "universal" translator, can't afford to buy a plugin just to have motion blur ...
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paride4331
Octane Guru
Posts: 3821
Joined: Fri Sep 18, 2015 7:19 am

Hi thekwen,
could you kindly share your .max scene with houdini .abc (in pm if you want) to test your issue and velocity.
Regards
Paride
2 x Evga Titan X Hybrid / 3 x Evga RTX 2070 super Hybrid
thekwen
Licensed Customer
Posts: 108
Joined: Sat Jun 01, 2013 2:26 pm

Hello

abc file is 50Go/500frames, i ll reexporte less frame next week for sharing
thekwen
Licensed Customer
Posts: 108
Joined: Sat Jun 01, 2013 2:26 pm

a link to abc file from houdini:

https://we.tl/r4h9KBQ6kg

This file with motion blur doesn't work the way it should for me, but it doesn't crash max (seems that abc size does matter, a similar 40Go abc files often crash when enabling motion blur).

My config:

Bi Xeon X5680
48Go Ram
3*GTX 1080
windows 7 64bits
3dsmax 2018 / octane 4.41 / houdini fx 16

It's a wetransfer file, it won't be available long.

Thx

Kwen
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paride4331
Octane Guru
Posts: 3821
Joined: Fri Sep 18, 2015 7:19 am

Hi thekwen,
thanks, I made a .max test file with it;
I sent it to developer.
Regards
Paride
2 x Evga Titan X Hybrid / 3 x Evga RTX 2070 super Hybrid
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