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Gilles Gagnon
slow preview normal?
on Oct 14, 2011 at 11:31:17 pm

Hello Gurus,

I'm somewhat of a newbie. I purchased an AE template of a logo animation and wish to edit it. It has 13 layers.

Problem is, it's unbearably slow to work with. It takes forever to RAM preview just a few seconds to see the effects of changes I make. I have an i7 w 12GB RAM and an ATI Readeon 4800 series graphics card.

Is this normal?

Thanks for any tips. I'm pulling my hair out trying to modify this due to this problem.

Gilles


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Todd Kopriva
Re: slow preview normal?
on Oct 15, 2011 at 5:05:14 am

Yes, previewing in After Effects can be slow.

See this page for information about improving performance in After Effects.

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Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
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Gilles Gagnon
Re: slow preview normal?
on Oct 15, 2011 at 1:52:30 pm

Thanks Todd,

Great info in on this page. I've made a few changes and am seeing a bit of positive change.

Gilles


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Tudor "Ted" Jelescu
Re: slow preview normal?
on Oct 15, 2011 at 9:33:35 am

It may be that your template uses a lot of fx - do you have motion blur on?
Is Open GL on by chance? If so, turn it off.
Is it a 1080 project and you are previewing full resolution? Try viewing it at 50% and Half, or even at 25% and Quarter. This needs to be setup in your Ram preview (player control panel) as well.

Tudor "Ted" Jelescu
Senior VFX Artist


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Gilles Gagnon
Re: slow preview normal?
on Oct 15, 2011 at 1:56:02 pm

Thanks Ted,

There are a few effects. OpenGL was turned on. I turned it off. I've come across some sources that state it should be ON, others OFF... confusing.

Motion blur is ON. Thanks for pointing this out, I can certainly turn it off until I render the final. This will help.

It's a 1080, I'm previewing at half.

Gilles


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Walter Soyka
Re: slow preview normal?
on Oct 16, 2011 at 2:19:56 pm

[Gilles Gagnon] "OpenGL was turned on. I turned it off. I've come across some sources that state it should be ON, others OFF... confusing."

To oversimplify, any sources that say OpenGL should be on for render are wrong.

From the Render with OpenGL [link] documentation:
Important: Because not all features of a composition can be rendered with OpenGL—and because some features that can be rendered with OpenGL are rendered with different results—you may only want to use OpenGL rendering to accelerate previews and to provide faster rendering for non-final results.

The only thing I'd consider using OpenGL for is Fast previews [link] in OpenGL-Interactive mode.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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Todd Kopriva
Re: slow preview normal?
on Oct 17, 2011 at 4:22:44 am

Heed what Walter said about OpenGL. It's exactly correct.

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


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Gilles Gagnon
Re: slow preview normal?
on Oct 18, 2011 at 11:27:05 am

Thanks Todd and Walter,

So if I read this correctly, I should keep it on for the RAM previews (KPD 0) but turn it off for the renders?

Gilles


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Todd Kopriva
Re: slow preview normal?
on Oct 18, 2011 at 4:06:12 pm

No. Do exactly what Walter said: Use OpenGL - Interactive mode for Fast Previews. He provided a link in his post.

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


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Gilles Gagnon
Re: slow preview normal?
on Oct 18, 2011 at 4:36:49 pm

Got it!

thanks again for helping out :)

Gilles


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