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Keylight humming on edges

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Kevin GonzalesKeylight humming on edges
by on Sep 3, 2010 at 11:46:16 pm

I'm about to go nuts. Here is the down and dirty.

• Greenscreen Footage shot on HPX 170 720P DVCPRO HD. Shutter at 60 (slow motion.)
• Using After Effects CS4 on Mac Intel quad core
• Using Keylight to key
• Greenscreen lit well
• Subject lit well

Over all it looks good. Now when I apply keylight and try to fine tune the hair edge on the subject (talking head at desk) the hair edge is humming like a bitch. Persons Hair is not frizzy. The subjects arm and hands and upper body edges are looking good. Subject moves a bit but not much.

Have tried a garbage mat that didn't do anything
Tried exporting the footage to 8 bit uncompressed and/also Animation from QT. Got the same results when reimported to AE and keyed.

Is there another way to sharpen out these hair edges?

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Alperen T. AyhanRe: Keylight humming on edges
by on Sep 5, 2010 at 9:51:13 pm

have you ever looked Aharon's that tutorial? :
If not let's take a look.. that technique works very well.

Alperen T. AYHAN
Always cinema...

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Alex SerbanRe: Keylight humming on edges
by on Sep 21, 2013 at 4:58:47 pm

Excellent link, Alperen! Just what I was looking for. Thank you.

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