3DS Max animation problem; still geometry moves (jitters)

[salvador]

Hello CGarchitecs;

 

I've been searching this forums for an answer, but since I couldn't find it, I dare to post my question. It may sound kinda newbie, but it still unanswered for me.

 

When I render still geometry with a still camera, still geometry jitters between frames. I attached a series of images taken from an animation to expose the problem. Run them fast on any viewer to see the effect.

 

Scene description:

-Plane is still all thru the frames; orign is at 0,0,0; not imported, created in Max; no modifiers.

-Rendered with Vray; no GI; all default settings; Vray Physical Camera default settings

-Problem pesists rendering with scanline in both Perspective and Standard Camera.

 

I'm preparing some animation work and I'm afraid this may be a huge setback.

 

Thanks in advance.

[Nezumi.san]

Are the images posted from a camera view or perspective?

I could be mistaken but it appears as though the camera is what experiences the rotation shift. Possibly a target issue.

Since you are utilizing reactor i think it was called. haven't loaded up 3ds in a while. if you made any changes in your scene after you had reactor run it you may need to re-run the physics of it again.

[datacrasher]

stills don't really help you need need to upload a video to youtube then we can see where its jumping it could be your vga card or something else or your settings in max

[salvador]

stills don't really help you need need to upload a video to youtube then we can see where its jumping it could be your vga card or something else or your settings in max

 

Alright; It'll take about two minutes to render 100 frames. I'll find time tomorrow and will post the video. This images were rendered in perspective mode, no reactor, just a simple animation of a box going down.

 

Thanks for the replies.

[datacrasher]

salvador

You don't have to render the whole 100 frame use the time configuration and set the time to where it jitters, unless the animation just jitters when your playing the animation?

[salvador]

Hello,

 

I've made a development to this issue.

 

I did a new scene. A ball moving down towards a fix, still plane. No materials, no GI, pretty much all default settings. I can now say that it is Vray that causes this behaviour.

 

Attached in the zip file there are four animations, all rendered to the same AVI format and settings. Every clip is named after its settings (scanline / vray / perspective / etc...)

 

I've kept on searching the web for this, still no answer.

 

So, what do you think?

 

Thanks for the interest.

[datacrasher]

salvador,

i dont know a lot about vray if there is no answer then i would try adding a service pack from the chaosgroup website if just maybe a bug it's not max or your pc because the render work in the MR and SL. have you sent this file to the chaosgroup to see what they said? if not i would contact them tell them you have found a bug

[salvador]

Thanks datachasher,

 

I figured out that maybe I need to set the Geometry mode in Vray settings to "Static"; if this solves the jittering problem I will run into a new one: Static mode takes a lot more to render and I don't know why. I'll check and post results.

[salvador]

No avail.

No matter what settings are adjusted, vray still makes it jitter. It's not the camera beacuse it happens in perspecitve view as well and even in orthorgonal view mode. Well, to sumarize it all, it jitters in top view too !!!

 

Checked the Chaosgroup forums already, one similar thread, no fix. Weired . . .

 

Geometry size? Distance to origin? no luck changing those. I'm running out of alternatives

 

Any luck, anyone?

[datacrasher]

maybe it's a bug in vray as i said salvador "i would send them files to the vray tech support and see what they say" if you cannot find anything online maybe its a new bug they have not discovered yet

[salvador]

Hi all!

I finally solved it. I really couldn't know why this behaivour, but nevertheless switching to SP4a did the trick. I suspect something went wrong in my installation.

 

Anyway, no more jitter / shaking, no more fading to black; all love

 

Thanks for the support.