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Re: Chromakey problems with screenshot. Any help appreciated.

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Ben HeusnerRe: Chromakey problems with screenshot. Any help appreciated.
by on Mar 16, 2005 at 4:57:46 pm

Also, what's the codec of the source material?

If it's a highly compressed one (DV, mid-quality MJPEG etc.) then you'll see this staircasing much more clearly when you've pulled your key than on your original unkeyed footage. There is a keyer designed for DV material, that works to smooth out these artefacts, but I can't remember exactly what it's called (DVmatte?).

You could also put a small blur on your matte.

Alternately, as it looks like a CG source, you could re-render your orignal footage to an uncompressed codec prior to doing any further work on it.

Hope that helps,
Ben

Curious Turtle Professional Video
Training | Editing |Support

http://www.curiousturtle.com


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