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Subject: Re: [AE] [AE} Keylight Chattering
From: Jim Curtis <jpcurtis@me.com>
In-reply-to: <list-4577172@media-motion.tv>
Date: Fri, 30 Dec 2011 12:03:05 -0600
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References: <list-4577172@media-motion.tv>
To: After Effects Mail List <AE-List@media-motion.tv>

A few things I'd suggest: =20

Use Levels set to alpha, and play with the alpha gamma or setup.

I often now use two instances of Keylight, or one instance of Color Key =
followed by Keylight.  The first instance is a garbage pass:  set the =
controls so that you have a small ring of green around your object to be =
keyed.  Follow that with Keylight, and then you only have to fix a small =
area.

Or, use your Intermediate Result, followed by another instance of =
Keylight to work on your edges.  That's how Intermediate Result is =
intended to be used.


On Dec 30, 2011, at 11:43 AM, Lachlan Westfall wrote:

> Hey all. Happy New Year!
>=20
> I=92m working with Keylight and some well-shot ProRez 422 footage. I =
used to be able to pull perfect keys with Keylight in a few steps. Now =
I=92m getting all this noise in the blacks.
>=20
> I=92ll set the Screen Colour, adjust the Clip Black and Clip white and =
be 90-percent there. Except I=92m getting unacceptable chattering in the =
blacks. I look at the combined matte and there=92s NO noise in the white =
area at all so I=92m not sure what=92s causing the chattering.
>=20
> Interestingly, if I select =93Intermediate Result=94 the chattering =
goes away completely, it=92s only when =93Final Result=94 is selected =
that I see it. Of course, with Intermediate result I=92ll loose all the =
edge adjustments that I=92ll eventually need.
>=20
> Any clues?
>=20
> -Lachlan Westfall
> Quiet Earth Design