Cycles: Keyframing motion blur shutter value fails to apply it properly when generating animation #107162

New Issue

Javier · 2023-04-20T12:05:41+02:00

Javier commented

2023-04-20 12:05:41 +02:00

System Information
Operating system: Windows 10
Graphics card: Nvidia RTX 3090

Blender Version
Broken: 3.6, 4.0

Short description of error

If we keyframe shutter property of motion blur, the updated shutter value is not considered during the final render.
Suppose shutter value is 0 at the start of render, it will remain 0 thorught the animation even if we've keyframed the value.

Exact steps for others to reproduce the error

Open attached file
select cycles render Engine
Start animation render (Ctrl-F12)

**System Information** Operating system: Windows 10 Graphics card: Nvidia RTX 3090 **Blender Version** Broken: 3.6, 4.0 **Short description of error** If we keyframe shutter property of motion blur, the updated shutter value is not considered during the final render. Suppose shutter value is 0 at the start of render, it will remain 0 thorught the animation even if we've keyframed the value. **Exact steps for others to reproduce the error** - Open attached file - select cycles render Engine - Start animation render (Ctrl-F12)

107162.blend

901 KiB

Javier added the

labels 2023-04-20 12:05:42 +02:00

Javier commented

2023-04-20 13:18:37 +02:00

somebody just told me that keyframing motion blur is not allowed in Blender? if this is the case, then this is a UX bug, because I should then not be allowed to keyframe the shutter parameter, but Blender allows me to do it, to keyframe the shutter parameter and if motion blur cannot be keyframed then this should not be allowed I suppose

actually they just clarified for me that its not allowed in Eevee but yes in Cycles, and I am using Cycles Render so then it should indeed work

somebody just told me that keyframing motion blur is not allowed in Blender? if this is the case, then this is a UX bug, because I should then not be allowed to keyframe the shutter parameter, but Blender allows me to do it, to keyframe the shutter parameter and if motion blur cannot be keyframed then this should not be allowed I suppose actually they just clarified for me that its not allowed in Eevee but yes in Cycles, and I am using Cycles Render so then it should indeed work

Pratik Borhade commented

2023-04-21 08:40:24 +02:00

Hi, thanks for the report. Could you share .blend file you've been using?

Pratik Borhade added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2023-04-21 08:40:30 +02:00

Javier commented

2023-04-21 08:42:53 +02:00

dear Pratik, I cannot as its a complex work related file that Im not allowed to share, but its super easy to reproduce, will try to put together any simple file with the related issue and will post it here, best :)

Pratik Borhade commented

2023-04-21 08:44:15 +02:00

ok, thanks for letting me know. meanwhile, I'll try to reproduce it locally :)

Javier commented

2023-04-21 08:48:51 +02:00

thank you :) should be easy, Ive been told in the last 24 hours that it is a known issue, at least according to some people, that motion blur cannot be keyframed in blender (Im using cycles), but then this would be a UI or UX bug, as in that case it doesnt make sense that I am allowed to keyframe the shutter parameter

Pratik Borhade added

Status

Needs Triage

and removed

Status

Needs Information from User

labels 2023-06-01 07:40:05 +02:00

Pratik Borhade commented

2023-06-01 08:23:18 +02:00

Indeed I can confirm. Shutter value remains same during complete animation render.

Pratik Borhade added

and removed

labels 2023-06-01 08:23:44 +02:00

Pratik Borhade changed title from ~~Keyframing motion blur on latest version 3.5, fails to apply it properly when generating animation~~ to Cycles: Keyframing motion blur shutter value fails to apply it properly when generating animation

2023-06-01 11:11:12 +02:00

Pratik Borhade commented

2023-06-01 11:22:23 +02:00

@javismiles hi, I've uploaded the file and simplified the report description.
This maybe a known issue but I did not find any relevant old report.

@javismiles hi, I've uploaded the file and simplified the report description. This maybe a known issue but I did not find any relevant old report.

Pratik Borhade referenced this issue

2024-01-29 05:21:50 +01:00

animated render properties ignored #117610

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