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TOPIC: Move object (Video) without moving its mask

Move object (Video) without moving its mask 06 Jun 2019 23:51 #100135

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Is there any way to move an object but keep its mask static? For example: I want to make a video "appear" on screen coming from behind an invisible "line" (The mask), but animating the video, not the animating to the mask to reveal the object. How can I do this? I just want a static mask :(

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Move object (Video) without moving its mask 10 Jan 2020 13:21 #103835

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Hi did you find out how to do this as I've got the same problem? best Bob

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Move object (Video) without moving its mask 10 Jan 2020 13:42 #103837

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So you want to reveal the video from behind an object that is inside that same video clip? You'll have to duplicate the clip on top of itself (Opt-drag). Mask the top copy, animate the bottom copy. If I'm understanding you correctly.

Or, add a Gap Clip or Solid generator above the clip, crop it, and animate the video below it.

Or, you could animate the video by keyframing the start and end. Then add keyframes for the Crop parameters at the start and end to match.

I guess I'd need to see an example of what you're trying to do.

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Move object (Video) without moving its mask 10 Jan 2020 13:55 #103839

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its a bit complex - as I'm working on a wide canvas with an even wider moving compound clip which has a stencil alpha on it (Being moving footage within text) over it. At one point I want to mask off, or in fact drop the opacity on part of the screen ie just the left side. AS I'm moving the large stencil alpha compound clip it seems any mask or wipe will move with the shot. The closest I've got is to animate a draw mask on one copy of the compound clip to reveal a second copy below which has lower opacity. See attached - thanks Bob


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Move object (Video) without moving its mask 10 Jan 2020 14:40 #103841

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I know it doesn't answer your FCPX question but this would be so easy in Motion that you would save a ton of time and it would be well worth the expense. Just a thought.

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Move object (Video) without moving its mask 10 Jan 2020 14:52 #103842

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Yes you are right but I don't know motion that well, it's my own fault for over designing it!! Cheers thanks for talking Best Bob

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Move object (Video) without moving its mask 11 Jan 2020 11:14 #103854

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I have not done much motion graphics work with FCPX. I guess I should test it out. I know with Premiere Pro it could be done real easy using track mattes.

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Move object (Video) without moving its mask 11 Jan 2020 19:52 #103855

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Take your Compound, call it "Layer 1 Compound", and keyframe it to animate across the page as you want it.
Then put the Layer 1 Compound inside of another Compound called "Layer 2 Compound" and mask that Layer 2 Compound.

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Move object (Video) without moving its mask 12 Jan 2020 08:50 #103860

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Thanks so much I'll give that a go - It took me time to work out the logic that once compounded again the clip becomes the same width as the project so the mask remains static. - Thanks again best Bob

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