From: Chris Zwar <chris@chriszwar.com>
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Subject: Levels vs Curves render times
Message-Id: <DFCA8E37-71BF-42EC-BB69-13331200B486@chriszwar.com>
Date: Sun, 23 Jun 2013 11:49:53 +1000
To: After Effects email list Mail List <AE-List@media-motion.tv>
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Hi all,

I was surprised by something a work colleague encountered this week.  I =
didn't see the project, but I believe it was quite long, with many =
layers of video in it. =20
When he initially went to render it it looked like being a 48 hour =
render (this is after the render has been going for several hours).  =
This was too long, and he guessed that the many instances of the curves =
plugin were slowing everything down.  He stopped the render and went =
through the project and replaced all the curves plugins with levels =
instead, to get the same effect.  Then the entire project rendered in =
about 2 hours. =20
That's a massive difference in speed - this is AE v5, so not something =
affected by cache.
I can understand that curves may be slightly slower to render than =
levels - but I would never have expected such a massive difference.  And =
my colleague is something of an AE guru and said he had experienced this =
before, and that he's always found curves to be a slow plugin to render. =
 I'd never really noticed...
Any thoughts?


-Chris=