Animation rendering settings

[waterbottle]

Hi guys,

actually i want to render an interior turntable animation with Vray. The rendertime for one frame shouldn't be more then one minute. I tried a lot of different settings (light cache and irradiance map) but it seems that there are only two ways for my images:

First way: It looks splochy and a lot of light leaks
Second way: It looks okay but takes too long to render (like 5 Minutes)

I looked around at the chaosgroup tutorials for animations but it doesn't show me any rendersettings.

So i need the best settings to render an interior scene, with medium quality but fast render times.

[Wolf3D]

Re: Animation rendering settings

Animation? Here I'm

First of all you have to give me some information: resolution of the video, number of frames, are there moving objects in the scene, number of render nodes?
5 minutes for a frame is very good, usually we take 15-45 minutes each frame. If you have budget for this scene, you can consider to use rebusfarm or other online render services (rebus is the only I've tested which support Vray/Blender).

However the best case is when the large part of rendering time is taken by the GI calculation instead the final render pass. In this case the animation render time can be boosted very well.

[waterbottle]

Re: Animation rendering settings

Hi

thank you very much for your reply. So i give you some informations about my scene:

Resolution: 800x600 for the lowest quality (i am looking forward to double the resolution if i can speed the rendering up)
No moving objects
Sorry, but what are render nodes?

5 minutes for a frame is very good, usually we take 15-45 minutes each frame

However the best case is when the large part of rendering time is taken by the GI calculation instead the final render pass. In this case the animation render time can be boosted very well.

I stored the Light Cache already so the Irradiance Map and the final render took about 5 Minutes.

[Wolf3D]

Re: Animation rendering settings

Ok, so we have to pull down Irradiance Map (IM) times.
A - You can use multiframe incremental mode for IM; the first frames will not speed up, but the next will be about half the time.
B - Render every 10-15 frame for a normal speed camera (20-25 for a slow camera) in multiframe incremental mode, saving the IM on an external file and do not render the final image (Render -> calculate GI only). Then render IM in From File mode, loading the saved IM from file (obviously deactivate "calculate GI only").

Hi

5 minutes for a frame is very good, usually we take 15-45 minutes each frame

1920x1080

[waterbottle]

Re: Animation rendering settings

Thanks for your reply, but i give you an example. This image took ~6 Minutes per Frame @ 1200x900 px, but it is still very noisy and there are lot of splotches. I also attached the render settings. Do you know what causes these problems? In this scean the light is changing so irradiance map and light-cache saving is not possible i think.

[yattaday]

Re: Animation rendering settings

Hi
May I suggest that scenes of that type without any detailed work do not require and rather do not benefit from creating such a rich, detailed Irradiance Map.
You can turn {detail enhancement} off. What's the the point of tweaking default LightCache settings in this case? Crank up LC subdivision back to 1000.
Have you ticked {display in sRGB} in an {exporter} panel?
For interiors you'd better go with Expotential or HSVExpotential color mapping mode with increased both - Dark and Bright multipliers.
Still I don't know what's your camera and light setup.
May you share a scene file with us?

Regards

[waterbottle]

Re: Animation rendering settings

Have you ticked {display in sRGB} in an {exporter} panel?

No its not ticked, should it?

May you share a scene file with us?

Sorry, the file is too big even if it is compressed as a zip-file

What's the the point of tweaking default LightCache settings in this case?

I just wanted to tweak the settings to get best results with lowest render time so i thought its more about the irradiance map then the light cache...

So i rendered it again with your advices, there are still those splotches...

[yattaday]

Re: Animation rendering settings

No its not ticked, should it?

No. I was just curious what you happen to see in VFB. Ok then, color mapping is off. Color mapping, in general, should be the first thing to deal with before we start messing up with IM or LC.
Taking into consideration that you aim for increasing rendering speed and you're shooting in 1200x900 I recommend to tweak values of your IM.
The setup you showed above has definitely too many prepasses.
Why don't you start from this:

HSV expotential
Brightness Multiplier 1
Dark Multiplier 3
Gamma 2,2

IM for res. like 1200x900
min rate -3
max rate -2
default values for - Hem.subdiv and Interpol. samples

LC
default values

As for light - typical sun ( intensity at 1) with a sky texture.

[yattaday]

Re: Animation rendering settings

I don't know if you knew that

http://www.thec4dvault.com/pdf/IntroducingVRay_01.pdf

A very cool straightforward guide for VRay learners. This one might help a bit.
Regards.

[waterbottle]

Re: Animation rendering settings

Why don't you start from this:

Looks much better now, but still a bit splotchy and noisy. Should i put the DMC-Noise threshold higher?

A very cool straightforward guide for VRay learners. This one might help a bit.

Thank you very much

According to the instruction the splotchies are caused by low irradiance map settings, should i also set the values higher?

[yattaday]

Re: Animation rendering settings

What's a light source here? The scene seems too yellowish. You propably haven't added a sky.
Playing with sun/sky intensity and adjusting color mapping values, it's really easy to get sth. like this



Nothing fancy but without a noise or splothes.

[rws]

Re: Animation rendering settings

With this stairs scene, go and check the number of threads you're running in the system panel at the bottom, make sure at auto detect or something. For whatever reason this scene is set to 2 threads which obviously not very good.

The splotches/cloudiness is usually to do with the irradiance map HSph subdivs. For difficult lighting you will need to turn it up.

To get the stairs scene quite smooth(I don't know anything about animating though) I would run the settings;
Sampler, adaptive DMC
-min subdivs 1
-max subdivs 16
-noise threshold 0.007

Irradiance map
-min rate -3
-max rate -1
-HSph subdivs -80

This might be of use too
http://www.workshop.mintviz.com/tutoria ... sing-vray/

[waterbottle]

Re: Animation rendering settings

To get the stairs scene quite smooth(I don't know anything about animating though) I would run the settings;
Sampler, adaptive DMC
-min subdivs 1
-max subdivs 16
-noise threshold 0.007

Irradiance map
-min rate -3
-max rate -1
-HSph subdivs -80

Thx

Works perfectly, thank you very much

For whatever reason this scene is set to 2 threads which obviously not very good

It is set on auto-detect...

You propably haven't added a sky.

Well, its a normal V-Ray Sun with a sky-texture on it, the sun is just pointing downwards

[Wolf3D]

Re: Animation rendering settings

IM Interpolation samples to 35-40 smooth well the GI