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Unreal engine Motion blur

Posted: Tue Jul 19, 2022 9:38 am
by VISDE
I'm having a problem with motion blur in the unreal engine. I have to unlock the display rate at runtime to have proper motion blur in the movie render queue, but if I do. The path that was imported from 3ds Max is not smoothed. Wheels will start jiggling. I tried to bake the animation and import as a fbx, and still not working. If I try to smooth the curve manually, I ll lose some details. Please help...

here is some photo of the issue

Re: Use animated car in Unreal Engine 4

Posted: Thu Jul 21, 2022 11:16 pm
by Patrik Martin
VISDE wrote:
Tue Jul 19, 2022 9:46 am
I'm having a problem with motion blur in the unreal engine. I have to unlock the display rate at runtime to have proper motion blur in the movie render queue, but if I do. The path that was imported from 3ds Max is not smoothed. Wheels will start jiggling. I tried to bake the animation and import as a fbx, and still not working. If I try to smooth the curve manually, I ll lose some details. Please help...

here is some photo of the issue
Most likely there is an interpretation between the keyframes that is the issue. So if you render a frame on the keyframe it is correct but if you render between two keyframes you have this strange issue with wobbling wheels.

The best is to make sure to animate in the same FPS as intended to be rendered out in Unreal.

So if you intend to render in 30 frames per second you need to animate in 30 frames per second.

Re: Unreal engine Motion blur

Posted: Fri Jul 22, 2022 10:23 am
by VISDE
I went back to 3ds max and double check make sure when I exported the same frame rate I use in unreal (24 fps) and the same problem still occurred…

I have no problem render with lock display rate at runtime but if I do there will be no proper motion blur

Re: Unreal engine Motion blur

Posted: Fri Jul 22, 2022 10:35 pm
by Patrik Martin
VISDE wrote:
Fri Jul 22, 2022 10:23 am
I went back to 3ds max and double check make sure when I exported the same frame rate I use in unreal (24 fps) and the same problem still occurred…

I have no problem render with lock display rate at runtime but if I do there will be no proper motion blur
Another issue that can arise is if the transforms are non uniform. Does the export log stat issue with uniform meshes?

Re: Unreal engine Motion blur

Posted: Mon Nov 21, 2022 5:18 am
by VISDE
Patrik Martin wrote:
Fri Jul 22, 2022 10:35 pm
There is not
There is not, and I'm still having this issue, but I can fix it by changing the export frame rate in 3ds max from 24(desire frame rate) to 240, but now I'm having issues when I'm importing the data smith

Re: Unreal engine Motion blur

Posted: Mon Nov 21, 2022 10:30 am
by Patrik Martin
What version of CDS are you using? Do you have the latest?

Re: Unreal engine Motion blur

Posted: Sun Jul 23, 2023 5:41 pm
by davesturchcgi
VISDE wrote:
Mon Nov 21, 2022 5:18 am
Patrik Martin wrote:
Fri Jul 22, 2022 10:35 pm
There is not
There is not, and I'm still having this issue, but I can fix it by changing the export frame rate in 3ds max from 24(desire frame rate) to 240, but now I'm having issues when I'm importing the data smith
Did you ever fix this issue?