HELP! Rendering animation with moving objects in vray

[thev]

As the title says, please help! I am trying to find a way to render my animation in vray with a full GI solution, but with animated character and other objects. I have tried before but i kept getting a flickering problem from low samples and the randomising radiosity solution.

Is there anything i can do to get around this with quicker rendering times, without having to blow-out the sample to a ridiculously high amount? Could someone please help, or even point me in the right direction. Thankyou very much.

This tutorial from the V-Ray help index may help you:
http://www.spot3d.com/vray/help/VRayHelp150beta/tutorials_anim.htm

Best regards,
Vlado

[mr Bob]

First off I would say your are going down the wrong road even thinking of rendering a full GI animation. You will always get flickering and as a student you do not have a renderfarm to back you up on those massive renders.
I do not use Vray,but I would certianly look at doing an ambient occlusion pass if vray can on your animation,then compositing that on a RGB pass , it will certainly give you the GI feel and render far quicker with no chance of flicker.
Quick dirt I heard can do a simple AO type pass as it works on the same principles as a custom AO shader in MR or Renderman.
Also consider breaking up your render into passes if you can in Vray then if need be you can go back and alter things without re rendering the whole sequence again...

good luck

B

[TiskO]

I have acces to a large array of machines, so i was thinking of doing a distributed render. Maximum of 5min per frame.

[mrtprodz]

Hi!
I'm having the same problem right now, the odd thing is that we are doing a network render
testing on two computers and I have no flickering problem with one of them (?)

I mean the Targa sequence is all right for each rendered frame on the second computer, no
blinking nor flickering.

on the first computer (where I also run the manager to do the network render) there is various
flickering at shadows area (and also on shining area of the scene)

I was thinking about doing render in various passes, a color pass then a "shadow pass"
but I don't believe it will change anything to my problem.

the test render is 5 frames of a room, nothing is moving (camera is not moving too)

any solution to our problem?

[mrtprodz]

after searching the forum I found this tip:

try setting the mode to multiframe incrimental.

I was thinking about changing the way it store the irradiance map maybe this is the solution.
Thank to ILS if it works, I'm trying this right now.

edit: well nothing changed, the first computer still does the same flickering while the other
render the frame correctly (how weird)

[mrtprodz]

I have acces to a large array of machines, so i was thinking of doing a distributed render. Maximum of 5min per frame.

have you tried the preset Medium-Animation ?

[Studev]

Without looking at what you're doing it's very hard. It might be all opinions are not relevant into your situation as well. Have you tried to increase interpolation ? Although you will lose out some details but your rendering time will be faster. Good balance between subd and interpolation will help most of the case.

or maybe incremental add irradiance map for every 5 or 10 frames (depending on ur camera and character movement ) ? then use the map for animation.

[TiskO]

Ahhh..! We fixed it! It was also the material believe it or not! We created a new material with the EXACT same settings and it worked fine! Also, we changed a few settings in the Irradience properties:

- Clr thresh = 0.1
- Nrm thresh = 0.15
- Dist thresh = 0.5
Thankyou to everyone!

[mrtprodz]

same thing for me, I played with the irradiance values and actually find a way to speed
up a little bit my renders :thumbsup:

no more flickering! :scream:

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