ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

Multiprocessing disabled: incompatible expression or effect

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Tom MastersMultiprocessing disabled: incompatible expression or effect
by on Dec 14, 2011 at 5:46:57 pm

I get the following status when doing a RAM preview in my comp:

Multiprocessing disabled: incompatible expression or effect

Having paid for 8 cores and 32GB of RAM, I certainly want to use them!

Any idea how I can find out *which* expression or effect is causing this?

Also, does this also apply to renders out of the que? (or just RAM preview in the comp)

thx!


Return to posts index

Dave LaRondeRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 14, 2011 at 6:17:27 pm

Right now we'd be at the crystal ball stage of diagnosis if we had no further information. Such as:
AE version
  • OS & version
  • Platform maker, processors & cores
  • Effects included in the comp in question
  • Type of footage in the comp in question
  • Absence or presence of expressions in the comp in question
  • Using/not using Open GL
That's a good list for starters.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


Return to posts index

Kevin CampRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 14, 2011 at 6:36:12 pm

this portion of the manual may help you find the culprit:

http://help.adobe.com/en_US/aftereffects/cs/using/WS9F936D13-E76A-41e4-BF8F...

see the portion on 'when after effects temporarily disables multiprocessing...'

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


Return to posts index


Darby EdelenRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 14, 2011 at 11:25:29 pm

In addition to those effects noted in Kevin's link, the sampleImage() expression will disable multiprocessing.

Luckily there's a way around that: Animation > Keyframe Assistant > Convert Expression to Keyframes. Make sure you do this as a last step just before rendering.

The only way around the issue of an effect disabling multiprocessing would be to pre-render the footage, essentially baking that effect into it. If the effect is one of several effects on the layer then it might get more complicated.

Darby Edelen


Return to posts index

Tom MastersRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 15, 2011 at 1:02:21 am

yup. Lens Blur is the culprit, thanks!


"If a composition uses any of the following effects, the composition will not be rendered with the Render Multiple Frames Simultaneously multiprocessing feature:

Auto Color
Auto Contrast
Auto Levels
Cartoon
Lens Blur"


Return to posts index

Darby EdelenRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 15, 2011 at 1:56:48 am

If you have some money to spare, and it's an effect you use very often, then I highly recommend this plug-in:

http://www.frischluft.com/lenscare/index.php

It renders faster, looks better, and has more features than Lens Blur. It also doesn't disable multiprocessing :)

Darby Edelen


Return to posts index


Tom MastersRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 15, 2011 at 4:19:01 pm

I have it!
nice tip, thx.


Return to posts index

Todd KoprivaRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 15, 2011 at 6:49:04 pm

The new Camera Lens Blur effect in After Effects CS5.5 also doesn't have this shortcoming.

---------------------------------------------------------------------------------------------------------
Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
---------------------------------------------------------------------------------------------------------


Return to posts index

Tom MastersRe: Multiprocessing disabled: incompatible expression or effect
by on Dec 19, 2011 at 10:33:13 pm

that is good to know. Are the other limitations also removed.
(I forget the exact effects, but there were a handful.)


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]