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Little nightmare with very simple thing.
Hello:
I´m working with this iStock video (a curtain wich opens), and need to make the matte channel transparent to place some video in the background.
The iSotck video has the video first, and then the matte channel.
In Avid, what I do is to edit the matte part of the video, add a matte key effect, step inside the effect, and edit there the part of the video with the curtain. So the curtain opens and there´s the video behind the curtain.
How do you do this in FCP?
I´ve tried everything, editing the curtain, adding a image mask effect, and adding the mask to the effect, but it´s not working.
Really, this should be simple.
How shoulg I do this?
Thanks.
Flavio.