key light grainy key..?

[Ed Romero]

can anyone elaborate on this?

“Fool with the lower layer’s Keylight settings until it looks like the subject looks fine, but is over a grayish, washed-out chroma key background. It’ll take some doing, but you will have gotten it to the point where Keylight’s spill suppressor is working. That’s good, because the Keylight spill suppressor works darned well.”

Thanks.

[Mateus Machado]

Hi Dave,

I have some doubts on what you wrote: “• Duplicate the keyed footage, and turn off the upper layer.
• Fool with the lower layer’s Keylight settings until it looks like the subject looks fine, but is over a grayish, washed-out chroma key background.”

First, in wich view mode should the layers be duplicated? satus? and wich settings should I fool around with? on the screen mate settings?

thank you,

Mateus

[Craig Ricker]

+1 on this

[Josh Laville]

I just used this tip (still relevant!) and thought it needed some clarification. First, get a good key with Keylight according to the screen matte view (see another tutorial if you need to).

Then, duplicate the keyed layer. Turn off the upper layer, go into the lower layer’s Keylight effect.

This is were people are getting confused. Just use Keylight on this layer to eliminate spilled color, not to do any keying. I have gotten great results just by reseting Keylight, and then selecting the color to key as the hottest part of my green screen. What you want to avoid are artifacts/noise in the dark grays.

Now, on the modes switch of the lower layer (you just color suppressed), choose to use the upper layer as the alpha track matte.

Voila! No more funky edges and much fewer grainy artifacts.

[Gerry Bayne]

Not sure if anyone reads this thread anymore but I’m still confused. I am sorry to be so literal but:

Just use Keylight on this layer to eliminate spilled color, not to do any keying.

Use which controls? I play with them all but can’t seem to eliminate the noise on her gray/tan coat. Can you tell me literally which controls in Keylight you’re using to do “eliminate spilled color”?. Also when you say, “do not do any keying”, how do I un-key the duplicated layer? Do I choose another colour with the screen color tool? If I do that, like choose her skin, everything on her turns black. I really am confused on this. The key I have is great, I just have a bit of noise on her coat.

Can anyone explain more literally?

Thanks!

[Ellen Yarbrough]

BEAUTIFUL! THANKS.

Ellen

[leighton silvestro]

I found the solution.

1) BOTTOM LAYER: apply keylight. Use this layer to remove the green. ignore that it makes your footage trashy. Just focus on getting the key to knock out the green.

2) Duplicate this layer.

3) TOP LAYER: On your new duplicated clip, (top layer) apply the “extract” filter. Set it to green channel only. Crank down the high levels until you see the green get choked out. at this point you’ll see massive spill especially around the edges of your subject. Simply add the “advanced spill supression” filter.

Now you’ll see the footage keyed and clean as a whistle. remember to turn off the audio on the top layer. Unless your into super high audio levels. I can’t help you there.