Rendering Long Compositions

Adobe After Effects

Rendering Long Compositions

Posted by Evan Robinson on May 22, 2014 at 12:07 pm

Hi all,

I am editing a seminar around an hour and twenty minutes long. The pastor was shot in front of a green screen. I did not like any of the keying solutions in premiere, so I used after effects key light. The problem is that it takes around 30 hours to render, since it’s so long. I am also rendering it to an external drive, so it does not slow down my main hard drive. Premiere (at least the edition I own) does not have key light, and after effects takes so long to render. What can I do about this?

Thanks

E. Robinson

Walter Soyka replied 11 years, 11 months ago 4 Members · 6 Replies
6 Replies

Evan Robinson
May 22, 2014 at 2:34 pm

Thanks,

E. Robinson
Jon Doughtie
May 22, 2014 at 2:46 pm

I do not know what version of AE you are using, and it may be too late to mess around with. But with fewer pixels to process, you might get better render times using the trick in this Creating Super Tight Junk Mattes tutorial:

https://library.creativecow.net/articles/rabinowitz_aharon/junk_mattes.php

I use this routinely for chromakey work in AE now. Something to tuck away for the future.
Walter Soyka
May 22, 2014 at 4:01 pm

Premiere has shipped with Ultra Key since CS5. Have you tried it?

Ultra Key is reasonably tweakable, pretty good, and GPU-accelerated (read: super-fast).

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive | RenderBreak [blog] | Profile [LinkedIn]
Daniel Waldron
May 22, 2014 at 4:55 pm

That’s a fantastic technique. Thanks for posting it.

I’d imagine that doing the auto trace for a hour and twenty minute clip would still take a significant amount of time to process. So while the final render time should theoretically decrease, I wonder how much actual post time would be saved?
Evan Robinson
May 22, 2014 at 6:37 pm

I have cs4, but thanks

E. Robinson
Walter Soyka
May 22, 2014 at 8:48 pm

[Evan Robinson] “I have cs4, but thanks”

If your computer meets the system requirements [link], you could use the Premiere Pro CC trial [link]. There’s been a lot of improvements in Premiere since CS4.

Even if you ultimately decide you don’t like it or don’t want to go on subscription, you could use it just to pull and render the key.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive | RenderBreak [blog] | Profile [LinkedIn]

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