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Slipping Video within a mask
Hello,
I have a mask on a layer of video. I want the mask to remain in place while I reposition the video layer within it. I know I can do this with alpha mattes and luma mattes, but in this particular project it would save me time using this method. If that method is possible. Anyone know of a way to do this?
Thanks in advance,
KevinPS In case you’re wondering, I want to use this method because I will be duplicating and replacing the video layer 100s of times and would like a quick way to recrop the image within the mask.
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Zaxwerks -
3 Replies
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if all your layers that will be using the same mask will be the same size and scale, you could put you mask on another layer (like a solid), then apply the set matte effect to the footage layer choosing to take matte from the masked layer.
then when you duplicate the footage layer (or the comp) and change the footage out (alt(pc)/option(mac) drag a clip from the project window onto the duplicate one in the timeline). it will keep the effect and it’s settings – and thus the matte….
set matte, however will only work if the layers will be the same size and scale… otherwise the matte will be effected.
you may be able to use the stencil alpha blending mode for the masked layer… this blending mode will apply the alpha of that layer to all layers below it. so as you add new footage layers, just place them bellow that layer and they will take on the masked layer’s alpha.
however, if you need these video layers on top of layers that are not ‘cropped’ by the masked layer, you will need to precomp the cropped footage layers, since all layers below the masked layer will be ‘cropped’.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
You can move a layer behind a mask by using the Pan Behind Tool (Y), clicking and dragging on the layer.
If you want to animate this I believe you need to keyframe both the position and mask path properties…
Darby Edelen
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aaaaaahhhhhhhh. thanks. that did the trick.
Even though I’ve been at this for 10 years, I learn something everyday. Kind of embarrassed I didn’t know that one;)
System Setup (for a more detailed list, see my profile)
HARDWARE
Mac Pro 2 x 3 GHz Quad-Core Intel Xeon
9GB Memory
Two 16x SuperDrives
Dual-channel 2Gb Fibre Channel PCI Express card
Apple Cinema HD Display (23″ flat panel)
ATI Radeon X1900 XT Graphics Card
AJA Kona LHe SD/HD capture card
Apple Xserve Raid 5.6TBSOFTWARE
Mac OS X 10.4.11
Final Cut Pro Studio 2
After Effects CS3
Photoshop CS3
Illustrator CS3
Boris Continuum 5
Sapphire Plug Ins
Roxio Toast
Digital Anarchy Anarchist Suite
ParticleIllusion 3.0
Trapcode
Zaxwerks
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