animation problems in studio

[30pips]

hi all.

we are checking some scenes in animation.
the results are nice, but still we feel its not there yet.
1. time per frame, in our render farm (dual xeon ) 45 minute per frame , we expect less in 720P
2. flickering lights?? remind me vray problems...
3. still some noise in render.

setup:




animation link:
password: 1234

Not a valid vimeo URL

hope we can solve this issues together.
thanks.

www.3dvision.co.il

[agentdark45]

To fix the light flickering click "save sec GI" to save the HD cache for the first frame, then click "load sec GI" for the rest of the frames (rather than recomputing the HD cache calculation for each frame).

I did an animation in Corona recently with some moving screen doors (that would normally require a GI recalculation) but it worked perfectly with the static HD cache, and with no artefacts.

[30pips]

O. K will try it, and upload result.
Thanks for the tip.
Like your signature ;)

[30pips]

o.k.

got WTF error, when try to save sec GI.
try output to network and desktop.
same problem, max crash.

1. do i need to save one frame only from hole animation?
2. how the moving object can use it? don't think it will work. it is not logical.
3. the frame that i saves needs to be half from output size? or full frame?
4. what about time? is it needs to be. high and quality calculation? how can i know when its done and good.

thanks.

[kahein]

Hi
All animation i have done works well (exterior, interior, even with objects and cam moving fast.
- check Save the secondary Gi on the first frame, at your renderer size. The Hdcache will calulate only one time for all the scene.
- In general i put in hd cache settings, hd cache to 1024 and position sensitivity to 100 (depending on the detail in the scene)
- limit the renderer to 1 pass so you don't have to cancel the render.
- uncheck save secondary gi and check load secondary gi. (make sure to have the .dat file accessible from all your computer)
- for noise can you upload one image for seeing it ?
- you can apply a denoiser like nik collection for still image and a node denoiser if you make animation in nuke for ex.

[30pips]

thanks for replay
will share with you the result, soon.

[30pips]

o.k
there is a progress.
looks like flicker light are low almost gone.
1. how can we increase the quality of the first pass. (pt.sample-1024, position sensitivity 100) for more detailed GI.
2. the noise is still high, what about settings for decrease the noise? in animation its very interrupting.

attached frame from animation, and setting screenshot.


thanks for your tips, hope it will help everyone.




 

[kahein]

on the forum you can find a method to avoid the noise .i dont remember if it was maru or rawalanche who post it.
it was like that :
make a small renderer region locate where you have strong noise.
you dont have to recalculate the GI, load the one you already have.
make only 1 pass.
crank up your Pt sample in value of power of 2 (4-8-16-32-64-128 etc) and see if you noise desapear, dont focus on the quality of the image it's normal because you have only 1 pass. normally you reach 2048-4096-8192. in general i always reach the same value. once you are satisfied, you divide this value by decresing the value from itself in reverse, always by power of 2. ex 8192/64=128. you obtain the number of passes. in this ex 64 pt sample and 128 passes
it s why the default value of 16 it's great for default settings. more you have passes, more you AntiAliasing your image. more pts more gi and less noise are evaluate by passes.
I also put the Image Filter to none because i render 4k image. For small render i reduce the blurring amount

[kahein]

For the position sensitivity at 100 it was an ex. because in my work, i have much small details.
In your case you don't need to go so high

[kahein]

why do you have light sampler multiplier at 20 ?? i don't think it's a good thing, the default value should work well for this kind of scene

[30pips]

Great answer, thanks a lot.
About the 20 samples for light, I think it's from setup I saw on the forum.
We will go back to default.
This project going to be huge, it's just a small room from very big and detailed interiors.
One of the interior is wedding hall with a lots of objects, tables full set, lights, giant vase with tons of flowers...
Is there going to be a problem with Corona? Handle this kind of interior? Are we taking a risk? Maybe it's not the best choice for the studio to start first animation with Corona in such large scale?
What is your opinion?
Thanks.

[kahein]

I think it's ok. Corona can handle much more.

[30pips]

o.k so here are the result.
after lots of tests.
we are quite happy from the result, the noise is tolerable and the time per frame also good.
thanks all for your help up to now.
if you have anything to add or correct please, let us know, so every one can know.
thanks.

(noise in the photo, from the upload convert.)

[kahein]

The bump on the floor is high.
did you notice change when you put hdcache pt sample at 8192 ?
did you always have those splotche in the miror in animation ?

[30pips]

Hi.
We chack this with low value and higher.
Also as I understand it's only for the first pass..?  Maybe we are wrong.
On the black glass, it's no spolches it's the texture behind.
Probably we fix it.