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Delude
12-25-2006, 04:22 PM
does someone know how to apply lets say a turbulence effect only to a certain area of the video? i have a 16:9 fotage on a 4:3 so it has a black area behind, and when i apply the turbulence it renders like a distorted rectangule, but i want it to stay rectangular messing only with the area inside of it.


all help is welcome
thanks 4 your time and attention
peace&light

Basicproduction
12-26-2006, 03:36 PM
so is the footage all one layer or is it 2?

Delude
12-27-2006, 04:29 AM
one layer,

to explain my self better i did this:

http://werlintm.no.sapo.pt/aeprob2.jpg


this is what i dont want :rolleyes:


and this made in phtoshop is the kind of result i want to achieve in AE with the turbulence effect

http://werlintm.no.sapo.pt/aeprob1.jpg

Shayder
12-27-2006, 07:47 PM
What you could do is create an adjustment layer and resize it to the height you need then apply the turbulent displacement effect to it.

Delude
12-28-2006, 08:16 AM
i tried and this was what came up...

http://werlintm.no.sapo.pt/aeprob3.jpg

Kargokultti
12-28-2006, 09:43 AM
You ought to have "pinning" set to "pin all"; doesn't seem to work if the amount is set to much higher than 200, though.

Shayder
12-28-2006, 03:00 PM
A bit of a work around , might do the trick.

put a mask the size of the image but excluding the black on top and bottom of the footage. Then duplicate the layer. on the layer on top invert the mask. Then make an adjustment layer. put that inbetween the other 2 layers of footage. Add the displacement effect to it.

Then scale up the bottom layer of footage a bit. Then set the dispalcement settings to something like Amount: 74 Size: 23 Complexity : 1.7 Make sure pinning is set to all locked.

This may give you sort of what you want. If not then you could just mask out the black bars render out the footage as a quicktime with the animation compression plus and alpha. Import it back into AE. Create a solid layer (black) mask it so it gives you the black bars you deleted. place that over the layer of your footage then add the effect to your footage. You could place the original footage below this layer to fill in any holes that there might be.

Hope that helps

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