Flickering specific problem

[salvador]

Hello,

 

I know there are a lot of threads about this but I decided to start a new one because everything in my scene looks fine except for the flickering. From quality to render time per frame it all is acceptable.

 

1. Setup AA and sampler settings. Never changed them all through.

2. Precalculated LC in both 1st and 2nd engines in fly-through mode.

3. Precalculated IRMap with previous LC animation prepass

4. Rendered with previous IRMap and LC in animation rendering.

 

SETTINGS

 

AA

http://flickr.com/gp/80027680@N04/ciKKx4

 

SAMPLER

http://flickr.com/gp/80027680@N04/0257r0

 

LC

http://flickr.com/gp/80027680@N04/g36w35

 

IRMap

http://flickr.com/gp/80027680@N04/khyLZ8

 

ANIMATION EXTRACT

http://www.filefactory.com/file/34bscca4j94f/n/Interior_Flicker_avi

 

(avi compressed with fdd. Right-click and save as)

 

NEW ANIMATION EXTRACT (.mov)

 

http://rapidgator.net/file/16936587/Interior_flicker.mov.html

 

Sorry for posting external links, but attachments aren't working (not for me anyway)

 

Thanks in advance.

Edited June 8, 2012 by salvador

[timbradford]

where are you loading your LC from? did you try LC flythrough mode?

[Corey Beaulieu]

What kind of animation? I can't see the file in that link,

 

IRR will flicker if you are rendering moving objects. And not for nothing, but you don't need to pre-calc light cache. Just run it with the IRR and you're good. It stores with IRR.

 

The only other reason I could offer is that you are not sampling enough frames. if you are using every 10, try every 5. Fast cameras need more samples.

[salvador]

@tim : yes precalculated in fly-through mode.

 

@Corey : Right click and save as to download the animation. I'll upload to another source with a different codec. No moving objects and, so to speak, I'm using the precalculated LC twice; one to precalculate IRR and second to render. So, if I precalc IRR with LC fly-through do I set the 2nd engine to *none* at render time because the IRR already stored the LC?

In the settiengs pics you can see I used animation prepass and animation rendering modes to precalc and to render respectively.

 

I'll try dismissing the LC at render time and using it only to precalc IRR.

 

Thanks to both for responses.

 

New link to the animation file at the top !!

Edited June 8, 2012 by salvador

[Nic H]

well that 'rapidgator' site was bloody annoying / pop ups / spam

 

anyway it looks to be lightcache flickering - you don't need to calculate LC / LC first....Iv never seen that before

 

do it at the same time as your irradiance map - make sure you have enough samples in your LC (200)?) and your sample size is small enough (0.02)

make sure LC is in flythrough mode with 'use camera path' ticked as well.

when you render pick the saved IRR and LC from file - dont bother switching off second engine - iv never done that.

 

also use multiframe incremental every 20 or so frames (depends how much the camera moves though)

animation prepass modes are shit

[salvador]

well that 'rapidgator' site was bloody annoying / pop ups / spam

 

anyway it looks to be lightcache flickering - you don't need to calculate LC / LC first....Iv never seen that before

 

do it at the same time as your irradiance map - make sure you have enough samples in your LC (200)?) and your sample size is small enough (0.02)

make sure LC is in flythrough mode with 'use camera path' ticked as well.

when you render pick the saved IRR and LC from file - dont bother switching off second engine - iv never done that.

 

also use multiframe incremental every 20 or so frames (depends how much the camera moves though)

animation prepass modes are shit

 

I gave it up for a couple of weeks while doing some exterior shots. Thanks for the advice. I'll give it a go ASAP with you approach. Funny thing is that I've another one with the very same apporach I described and it came out nice and clean.

 

Thanls again _ _ °