Inspiring

Answered

Transform doesnt not respect the motion blur samples of the comp

Forum|Forum|3 years ago
October 6, 2022
7 replies
1175 views

When you animate an object (In my case a black box shape layer) with the transform object & the scale width property. The motion blur samples of the composition are not respected it's always set to 16.

Doesn't matter if I set the motion blur samples to 4 or to 64 the motion blur keeps looking the same.

Hopefully you guys and gals can look into this!

Much love,

Dierenwinkel

M1 Max, AE version 22.6.0

Compositing and VFX

This topic has been closed for replies.

Correct answer Mylenium

You have a misunderstanding there. Effects only respond to motion blur based on their internal routines completely separate from the comp settings. It's entirely optional and most stock effects don't even have such features and would require pre-composing and applying CC Force Motion Blur or Timeawarp/ Motion Blur or third-party plug-ins like RSMB to produce trails. So there's nothing wrong technically. Sorry if your post got lost in the endless stream of new threads. I don't have notifications on or else I'd be bombarded with hundreds of mails and alerts every day.

Mylenium

Legend

If you feel it's important, create a post under the "Ideas" tab and the staff who occasionally check in here will see it. Don't expect too much, though. This is most definitely not a high priority, as this has been thrown around the last twenty years and never was implemented. Where it's important like in Particle systems most developers prefer to develop their own code, anyway. So don't be disappointed if it never comes to fruition.

Mylenium

Dierenwinkel DocAuthor

Inspiring

Thanks for the quick replies!

No worries my expectations where already very very very very low for requests.

After 8 years of requests premiere pro still has the "Are you sure you want to delete all keyframes" Popup with no option to disable it.

- Dierenwinkel

MyleniumCorrect answer

Legend

You have a misunderstanding there. Effects only respond to motion blur based on their internal routines completely separate from the comp settings. It's entirely optional and most stock effects don't even have such features and would require pre-composing and applying CC Force Motion Blur or Timeawarp/ Motion Blur or third-party plug-ins like RSMB to produce trails. So there's nothing wrong technically. Sorry if your post got lost in the endless stream of new threads. I don't have notifications on or else I'd be bombarded with hundreds of mails and alerts every day.

Mylenium

Dierenwinkel DocAuthor

Inspiring

I guess this will turn into a feature request than...

It's really really weird how they don't respond to the comp settings.

The CC Force Motion Blur works but it's notoriously slow.

Is there any way you could let the devs know or should I make a feature request?

Dierenwinkel DocAuthor

Inspiring

Any update on if this has been classified as a bug and it's being fixed?

Mylenium

Legend

Provide screenshots of how it looks in your comp and the actual settings. I can't open your project here at home and if it's specific to your Mac(s), that wouldn't do us any good, anyway, since I'm on PC. Thank! I also merged your posts and turned them in a regular discussion so we can sort this out.

Mylenium

Dierenwinkel DocAuthor

Inspiring

This was my last post but due to not being able to reply I made a new post. Thanks for the feedback @Mylenium I have provided a test scene now.

When you animate an object (In my case a black box shape layer) with the transform object & the scale width property. The motion blur samples of the composition are not respected it's always set to 16.

Doesn't matter if I set the motion blur samples to 4 or to 64 the motion blur keeps looking the same.

https://community.adobe.com/t5/after-effects-bugs/transform-doesnt-not-respect-the-motion-blur-samples-of-the-comp/idi-p/13249403#comment-on-this

The test scene is really simple, I used 64 motion blur samples & 32bit to eliminate any other variables.

M1 Max, AE 22.6.0

Much love,

Dierenwinkel

Test_Project_To_Show_Transform_Bug.zip

Jose Panadero

Community Expert

But the problem here is not the number of samples as you have the adaptive limit to 128. At the speed you move the object and the timebase of your composition (30fps) you need to modify the Shutter Angle.

Also you can use and animate the Directional Blur to get a softer transition

Dierenwinkel DocAuthor

Inspiring

@Mylenium @Jose Panadero

Thank yall for commenting on the post!

I provided a screenrecording here.

As you can clearly see the issue is with the number of samples. Since it does nothing when the samples change.

Hopefully this is enough information to solve the bug 🙂

Much love,

Dierenwinkel

AE_Transform_Samples_Bug.zip

Test_Project_To_Show_Transform_Bug.zip

Mylenium

Legend

Without any specific info about your actual comp settings for shutter phase and duration, screenshots and things like hardware acceleration settings nobody can verify any of that. For all we know this could be totally incidental due to how the motion is timed in relation to the shutter settings or simply be an issue with GPU functions. At the very least turn off Fast Draft and see if it makes a difference and also check the settings mentioned.

Mylenium

Dierenwinkel DocAuthor

Inspiring

Update

On an imac from 2014 it's bugged as wel, so its not ARM related.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded