From: Todd Kopriva <kopriva@adobe.com>
To: After Effects Mail List <AE-List@media-motion.tv>
Date: Fri, 11 Oct 2013 12:22:23 -0700
Subject: RE: [AE] Levels vs Curves render times
Thread-Topic: [AE] Levels vs Curves render times
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re-awakening a dormant thread:

If we were to spend time improving the Curves effect, what would be the cha=
nges that you'd want to see? Be as specific as possible, and list things in=
 your priority order. Anything in the Curves effect is fair game for this c=
onversation, including user interface, performance (as noted by Chris below=
), and additional features.


> -----Original Message-----
> From: After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf =
Of
> Chris Zwar
> Sent: Saturday, 22 June 2013 18:50
> To: After Effects Mail List
> Subject: [AE] Levels vs Curves render times
>=20
> Hi all,
>=20
> 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.
> 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 effe=
ct.
> Then the entire project rendered in about 2 hours.
> That's a massive difference in speed - this is AE v5, so not something af=
fected
> 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?