-
AE Motion Blur “samples”
AE’s motion blur is extremely useful and nifty, but when you, for example, have a long thin white line and spin it quickly, when AE adds motion blur, you clearly see the “sub-samples” it generates for the motion blur. From what I can tell, there is no preference or setting to tell AE how many sub-samples to use for motion blur… which kind of sucks. Did I miss anything? Is there anything that can be done to keep these fast blurs smooth and accurate?
-
5 Replies
-
Ryan, you can change the motion blur amount using the Shutter settings.
Here’s the info from the manual:
Adjusting the shutter angle for motion blur
Adjust the intensity of motion blur by changing the shutter angle setting. The shutter
angle is measured in degrees, simulating the exposure allowed by a rotating shutter. If you
are not applying motion blur, shutter angle has no effect.
The shutter angle uses the footage frame rate to determine the simulated exposure. For
example, typing 90 degrees (25% of 360 degrees) for 24-fps footage creates an effective
exposure of 1/96 of a second (25% of 1/24 of a second). Typing 1 degree applies almost no
motion blur, and typing 720 degrees applies a high degree of blur. By default, the shutter
angle is set to 180 degrees.
To set the shutter angle and phase for motion blur:
1 Choose Composition > Composition Settings.
2 On the Advanced tab, type a value for Shutter Angle.
3 In Shutter Phase, type a number (up to 360) for when you want the shutter to open
relative to the frame start (optional) and click OK.
Note: You can also change the shutter angle for a composition in the Render Queue
window. (See -
Yeah, I know about shutter phase and angle. That’s not really what I’m asking about. I’m talking about the ammount of subsamples AE uses to create that blur. You might think of it like “quality” or “steps” if “subsample” isn’t particularly illustrative.
-
Sorry, if you’ve already messed with shutter angle, you’re stuck. The number of subsamples can’t be changed, unlike in a 3D app.
Maybe you can do that with the Reelsmart Motion Blur pluginmwhich can be applied to rendered footage, an adjustment layer at the top of the comp, or to a precomp.
Steve
-
Actually if you use pre-comp, turn off Motion Blur and use SmoothKit Frame Accumulate you can control an arbitrary amount of samples per frame
Pierre
http://www.revisionfx.com -
And this works “between” frames? No time remapping needed? I’ll have to look into it.
Reply to this Discussion! Login or Sign Up