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Compositing footage that has Green already keyed out

Posted: Thu, 12th Mar 2009, 11:01pm

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thenits

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I am trying to composite footage that has the Green Screen already keyed out. I have no idea how to go about re-keying or what setting to use. Thanks in advance.
Posted: Thu, 12th Mar 2009, 11:07pm

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thenits

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By the way it is black in the background.
Posted: Thu, 12th Mar 2009, 11:45pm

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Axeman

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So you (or someone) replaced the green with black? Not sure what the point of that would be.

For footage with a black background, you can use a value key to remove the black, or you can use an Add or Screen composite mode as a simple way to composite the footage into your scene, if it is luminescent footage. What the footage is will affect what the best way to composite it in is. The fewer keys the footage is run through the better though, in general, so you might want to see if you can get your hands on the original greenscreen footage and work from that.
Posted: Fri, 13th Mar 2009, 12:08am

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thenits

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Well the footage was sent to me like that. The green was keyed out before I got it. I'll try a value key, thanks.
Posted: Sat, 14th Mar 2009, 12:09am

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Paradox Pictures

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Just re-key it, except with black.
Posted: Sat, 14th Mar 2009, 7:10am

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spydurhank

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Rating: +1

Movie Kid 4 wrote:

Just re-key it, except with black.
That would work... but not if there is black on his actors or they are wearing black... clothes, shadows, hair or eye color.
You're better off getting the original greenscreen footage before it was keyed.

Oh wait... just had another thought.
It might already work if the greenscreen part which is now black is actually transparent. If that were the case you won't know until you place a background below the keyed footage on your timeline.
That might work?
Posted: Sat, 14th Mar 2009, 6:01pm

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Paradox Pictures

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spydurhank wrote:

Movie Kid 4 wrote:

Just re-key it, except with black.
That would work... but not if there is black on his actors or they are wearing black... clothes, shadows, hair or eye color.
You're better off getting the original greenscreen footage before it was keyed.

Oh wait... just had another thought.
It might already work if the greenscreen part which is now black is actually transparent. If that were the case you won't know until you place a background below the keyed footage on your timeline.
That might work?
Smart. smile
Posted: Sat, 14th Mar 2009, 6:32pm

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spydurhank

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Movie Kid 4 wrote:

spydurhank wrote:

Movie Kid 4 wrote:

Just re-key it, except with black.
That would work... but not if there is black on his actors or they are wearing black... clothes, shadows, hair or eye color.
You're better off getting the original greenscreen footage before it was keyed.

Oh wait... just had another thought.
It might already work if the greenscreen part which is now black is actually transparent. If that were the case you won't know until you place a background below the keyed footage on your timeline.
That might work?
Smart. smile
Thanks but it was your idea. Good one by the way.
It's the same as if you have a picture in photoshop or gimp, erase part of the picture to make it transparent so that if you open the photo in V.L. the transparent part of the pic will appear black untill you put a video or another pic under the transparent one. You won't need to key it or anything.