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3 years ago

I'm rendering out a little animation I've been working on at the moment but I'm running into some problems with motion blur. Well not so much problems, it's just painfully slow. I'm using mental ray and 430 frames is gonna take me a few days to render which I want to avoid if I can. I've tried rendering out a velocity pass and adding the blur in Fusion but it looked pretty bad, I think velocity blur is only good for 2d motion. Anyone know of any good tricks or work arounds?

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-The Real Matt
Senior Member

3 years ago

are you using 2d or 3d motion blur? 3d is much much slower

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+Steve Martin
Moderator

3 years ago

The motion is pretty jumpy so it looks pretty bad with 2d motion blur. So yeh, 3d.

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-The Real Matt
Senior Member

3 years ago

i'm really not that in the know on rendering but i know speed is the price you pay for decent 3d motion blur. so beyond switching to 2d and playing with the settings (if any) i cant help sorry.

and it's a story that might bore you, but you don't have to listen, because I always knew it was going to be like that.

+Jamie
Admin

3 years ago

Why don't you just render in vray and use vray motion blur? You working in maya?

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+Steve Martin
Moderator

3 years ago

I'm not but using vray would require redoing all the materials which I'm also not that keen on. I think Matt may be right, I might just have to cop the long render. I always thought that you could render out MB as a separate element but when I went to do it I found that I was sadly mistaken.

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-The Real Matt
Senior Member

3 years ago

search around. there may be motion blur plugins around to use in maya/ max and post that may be of use. but if not, then tough luck you'll just have to wait out the render.

but heres hoping someone who is a god of rendering comes along with better advice.......

and it's a story that might bore you, but you don't have to listen, because I always knew it was going to be like that.

-johnbeyer
Member

3 years ago

Well, As Jamie Suggested, Vray camera renders 3d Blur in no-time, which is just beautifully and works perfect. that's the only guess I can give you.

+Steve Martin
Moderator

3 years ago

Yeh, I've found Mental Ray to be a pretty good renderer, but as far as motion blur speed goes, Vray as a long way ahead.

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+Steve Martin
Moderator

2 years ago

I ticked the "fast rasterizer" box which brought the render down to a respectable 10 hours. The quality is pretty good too.

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-Tyson
Senior Member

2 years ago

I don't know. I've been getting acceptably fast motion blur with mental ray. pretty much the same as vray 3d motion blur.
what other stuff have you got going on in the scene, final gather, GI etc..?