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Reduce image size in After Effects to speed up render?

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Dustin Parsons
Reduce image size in After Effects to speed up render?
on Sep 17, 2015 at 5:40:46 pm

I have a project made mostly of images with a lot of effects on them to make it look like they're moving in slow motion (pupped people to make it appear like they're walking, added cloud moment to skies, lighting effects, etc...). The problem I have is the images are huge (12960x9035 px) and are taking a long time to render. Most of the images I've reduced to about 21% of their original size in After Effects for a 1080x1920 timeline so they don't have to be that big. I tried resizing the images in Photoshop but that messes up the position and size relations (maybe because they're 3D layers?) and puppet tool goes insane.

Is there any way to reduce my image size in After Effects to speed up the render time or do I have to resize every image, effect, precomp, etc...? Thanks!


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Dave LaRonde
Re: Reduce image size in After Effects to speed up render?
on Sep 17, 2015 at 6:08:10 pm

Well, you'd basically be starting over from scratch. No fun.

Knowing that computers can continue to work while you sleep and do other things, what is your definition of "a long time"?

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Dustin Parsons
Re: Reduce image size in After Effects to speed up render?
on Sep 17, 2015 at 6:09:29 pm

It's a 1 minute video. Took about 3 hours to render yesterday.


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Dave LaRonde
Re: Reduce image size in After Effects to speed up render?
on Sep 17, 2015 at 6:42:48 pm
Last Edited By Dave LaRonde on Sep 17, 2015 at 10:11:29 pm

Actually, for what you're doing, that's not bad! I wouldn't sweat it.

If you intend to do more of this in the future, well, you've just used this project as a learning experience. Look on the bright side.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Frank Feijen
Re: Reduce image size in After Effects to speed up render?
on Sep 17, 2015 at 9:57:48 pm

Wouldn't precomping and creating lower-res proxy's help?


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Dustin Parsons
Re: Reduce image size in After Effects to speed up render?
on Sep 18, 2015 at 5:38:28 pm

I'll give it a shot. Haven't used proxies for something like this yet


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