how to adjust level of motion blur?

[smarts19193560]

Hi, everyone.

I am implementing motion blur by transform_world.

I am going to adjust level of motion blur between some values (for example: 0 ~ 100)

Is it possible? if so, how can I implement it?

Regards,

Anthonie.

[shachar carmi]

Hi Anthonie.

what do you mean by "adjust the level of motion blur"? i can think of a few

ways to interpret that:

1. the length of the blur. (i.e. shutter angle)

2. the number of samples in the blur.

3. the overall mix between the motion-blurred result and a non-motion

blurred render.

On Thu, Oct 18, 2018 at 10:50 AM smarts19193560 <forums_noreply@adobe.com>

[smarts19193560]

Thank you for your replay.

Yes, Got it.
Actually I am implementing motion blur on Premiere Pro Transition not After Effect.

So, I used PF_TRANSFORM_WORLD on Premiere Pro because the function provides motion blur.
Is it possible to adjust level (quality) of motion blur by transform_world?

Regards,

Anthonie.

[smarts19193560]

I increased MATRICES, but there is no difference.

Regards,

Anthonie.

[shachar carmi · Accepted solution]

perhaps this would also help:

transform_world does motion blur by spreading 16 instances between all

given matrices. if you provide 2 matrices you'll get 16 linear positions

between mat1 and mat 2.

if you provide 3 matrices, you'll get 8 from mat1 to mat2 and another 8

from mat 2 to mat3.

so providing more matrices won't give you more samples, but it will give

you a more "refined" look with rotations and curved paths.

On Fri, Oct 19, 2018 at 4:09 PM smarts19193560 <forums_noreply@adobe.com>

[smarts19193560]

Oh, OMG.
So, I need to make motion blur myself without transform world.

Thank you for your help.

Regards,

Anthonie.

[shachar carmi]

if by "quality" you mean the number of samples used to create the blur,

then as far as i know transform_world always uses 16 samples.

perhaps if you set the overall quality flag of transform_world

to PF_Quality_LO, then some lower settings will be used for the motion blur

as well. i never used that transform_world with low quality settings so i

don't know for sure.

On Fri, Oct 19, 2018 at 4:01 PM smarts19193560 <forums_noreply@adobe.com>