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keying out footage

Posted: Sun, 8th Nov 2009, 4:50am

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powersurge

Force: 1223 | Joined: 30th May 2006 | Posts: 9

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how exactly would I go about keying out this footage

Posted: Sun, 8th Nov 2009, 5:56am

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

It would totally depend what part of that footage you want to keep. Other than the border, I don't see much that would be of use there. Also, I've moved this to the VisionLab Support forum assuming you are using Vlab for the keying.

If you can provide more info about what you want to do with that footage, we can offer suggestions on how to do it.
Posted: Sun, 8th Nov 2009, 7:56am

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powersurge

Force: 1223 | Joined: 30th May 2006 | Posts: 9

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if you click on the clip thing it should show a video of a tornado made with vision lab. Now i want to take that footage and bring into Adobe After Effects, but I need to somehow key out the black background (in Adobe After Effects).
Posted: Sun, 8th Nov 2009, 8:05am

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Axeman

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SuperUser

Ah, sorry, I neglected to click on the image previously.

You could save some time by just rendering the footage from VisionLab with an embedded alpha channel. Linky. Out of curiosity, why are you compositing it in AE instead of just completing the composite in VisionLab?

You could use a value key to remove the black, or just switch the composite blend mode to screen or add, or something else that will remove the black areas.
Posted: Sun, 8th Nov 2009, 8:19am

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powersurge

Force: 1223 | Joined: 30th May 2006 | Posts: 9

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well for starters when I put the background in and rendered it, it came our all pixalelated, but then that was solved with the codec. 2nd, I needed to make the footage shake, and I don't know how to do that in VisionLab, so I just use the wiggler tool in After Effects, and 3rd I needed to work with some text effects