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Keylight problem on noisy (video) footage
Hi, I have a problem with Keylight on noisy footage. The person talking is in a studio with lots of light on a good green screen. Keylight keys the subject out but I omitted to light the legs below the knee. When I look at the source footage you can see noise there but when the key is applied it gets very noisy.
If you look at https://www.youtube.com/watch?v=6lSZr1BInl0 from surfaced studio, at the end 5:54 on the Osaka Snake shirt you can see the effect I’m experiencing. However mine is much worse when I render.
Anyone have any ideas what can be done to damp it down?CC 2014, footage is 50 MHz 4:2:2 25p.
thanks
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6 Replies
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Use the Key Cleaner effect with Keylight:
https://blogs.adobe.com/aftereffects/2014/04/new-changed-after-effects-cc-2014.html———————————————————————————————————
Todd Kopriva, Adobe Systems Incorporated
After Effects product manager and curmudgeon
After Effects team blog
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Use Intermediate Result from Keylight – this solves a lot of noise issues.
Tudor “Ted” Jelescu
Senior VFX Artist -
Todd,
thanks for that suggestion. I have to study it some more but I latched on to “Reduce Chatter”, otherwise using default settings, and it made a huge difference. -
Dave thanks for that. I will try that approach after I’ve done some re-shoots.
mark -
Ted,
could you expand on that a bit?thanks
mark -
Using the “Intermediate Result” instead of the “Final Result” in Keylight removes some of the automated colour correction which can introduce artifacts and noise. I have been using this setting in most of my chroma projects combined with AE’s Spill Reduction and it works for most of my work. Of course in most projects I use the same tested setup with a well lit chroma and plenty of light, but I found this to work just fine in chroma footage that I received from other sources with a not so great setup.
Tudor “Ted” Jelescu
Senior VFX Artist
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