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tracking warp stabilized footage

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Dave Fleming
tracking warp stabilized footage
on Jul 19, 2011 at 4:28:44 pm

I have a piece of HD video in PPro that's a guy driving in a car, talking to the camera. I took advantage of the new warp stabilize feature in AE 5.5 to steady the shot. It worked like a charm. But now I need to mask a window in the vehicle to drop the levels a bit to even out the shot. In a perfect world, I would parent the mask I've created to some parameter in the Warp Stabilizer effect, but I don't see anything keyframeable in there. Can I do this? How?


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Dave LaRonde
Re: tracking warp stabilized footage
on Jul 19, 2011 at 4:37:17 pm

Nest the warp stabilized comp in another one?

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Dave Fleming
Re: tracking warp stabilized footage
on Jul 19, 2011 at 4:51:59 pm

I'm thinking I got the process backwards...I should have made the mask on a duplicate layer, precomped both layers and then run the warp stabilize on the precomp...?


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Dave LaRonde
Re: tracking warp stabilized footage
on Jul 19, 2011 at 4:55:50 pm

i don't have enough experience with Warp Stabilizer to say authoritatively that it can work as well on a nested comp as it does on the actual footage; I've never tried it.

For now you'd have to test it and see what happens.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Dave Fleming
Re: tracking warp stabilized footage
on Jul 19, 2011 at 5:53:22 pm

You're right--it's not warp stabilizing the precomp in any good way at all...anybody from Adobe got an idea on this?


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Dave LaRonde
Re: tracking warp stabilized footage
on Jul 19, 2011 at 5:58:16 pm

You might have to prerender, then fix the window.
I recommend either ProRes HQ, a PNG sequence or a PNG-codec movie.

Or fix it by nesting the Warp Stabilized comp in another comp.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Walter Soyka
Re: tracking warp stabilized footage
on Jul 19, 2011 at 5:56:30 pm

Warp Stabilizer isn't a traditional tracker, so you won't have tracking data like you're expecting.

Depending on your footage, you may be able to outsmart the Warp Stabilizer [link] to lock down the window in the shot, then use a static mask.

Otherwise, Mocha-AE might be a good choice, or you may even be able to use some garbage masks and luma keying to isolate the window.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
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