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Getting a mask one layer to add alpha to another – mask tracking
Hey,
I’m trying to motion track a solid layer with a mask on it to ‘delete’ part of a footage layer. I’ve followed every tutorial I can find, but they always fall short on what i’m looking for.
Till now I have animated masks on the layer I want to add alpha to, but as I want to motion track this alpha mask, I have read you should make it on a separate solid layer above the layer you want to delete from.
I have the mask on the solid motion tracked to the footage, but can’t get it to ‘delete’ the relevant section.
If I ‘add’ from the mask layer, you just see the solid under the mask
If I then TrkMat to Alpha, the white disappears, but you just see the footage under the mask again
I’m going crazy, anyone help?
Thank you!
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4 Replies
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I wish. I’ve tried that, but it’s not working, just reveals the white solid the mask is on. I popped a red solid under it all to show what it’s doing.
I’m sure it’s super simple, but it’s just stumped me.
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no bud, you set the bottom layer to use the above layer’s matte… set your video to use alpha matte(not the solid)…and switch off the solid (eye icon).
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Man, thanks a million. I tried a tonne of different options, but of course, not that… Forest for the trees etc.
I’ve been trying to tighten up my fundementals of AE, and this is a reminder that now is the time, I should have had this on lock a long time ago.
Thanks again.
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