Motion blur not working

Flame Flame Questions
1

HI there,
Has anyone else had problems with motion blur in Action in Flame 2025?
If I try to adjust the shutter setting it breaks the motion blur and I only get a single sample rendered.
Any suggestions as to how to fix it?

Thanks,
Dan

2

The obvious questions first:

  • Are you in preview mode and not 3D mode?
  • Adaptive degradation off?
  • Motion blur animated?
3

I’m in preview mode.
Adaptive Deg is off.
Motion blur is not animated.
When its set to 20 samples and .5 Shutter I can see what is expected, but if I bring the Shutter down at all then it stops working. If I change the Phase the single sample moves as expected.

I’m running on Rocky Linux

4

Is your motion blur keyframed at all? If so, make sure the interpolation isn’t set to Constant or w/e.

5

No keyframes. Its very strange, 7 Samples and .25 Shutter is fine but if I change the Samples to 8 then it breaks. Back to 7 and its good again…

I’ve done a full restart and no different

6

Next series of questions. Did you try:

  • New project?
  • New user?

A new user solved a very similar problem for another fellow Flame artist last week.

7

oh, I’ll give it a try

8

@DanCullen - @SamE was having some unusual motion blur problems recently.

9

I was having issues with Motion blur in the G-Mask tracer. After setting mo blur prefs to .5, 7 samples it rendered black. Sounds different, but possibly related.

10

Hello ! Can you try to look at the result in a mux after the action ?
Had this issue a week ago and the action output was not showing the motion blur but it was there