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Two Videos, 1 Over the 2nd, Slightly Smaller

Posted: Thu May 05, 2022 05:21
by waffleicious
Hey guys, I have a very simple question here.

I want to play a video in an octagon screen-shape that I have built in an installation. I have a border going around the screen that is roughly 5in in width. I would like the center octagon to play whatever is selected on Layer 1 and the border to play whatever is selected on Layer 2. I don't need any overlay or anything; I just need two videos one on top of the other but slightly smaller.

I feel like this should be a very easy thing to do but I'm kicking myself because I can't seem to figure it out.

I've been creating different sizes and types of output masks with screen 1 being the smaller mask and linking itself to Layer 1 while screen 2 is masked to the edge of the border around the octagon and is linked to Layer 2. I just can't seem to find a layer/mask order that allows you to see each video distinctly separate from one another. Do I need to adjust Input Masks? What simple thing am I doing wrong here?

Pics attached for reference.

Thanks, guys!

Btw I have read a lot about creating a white shape with a black background as a picture and placing it into it's own layer and then making that layer a mask, but isn't this something I should easily be able to do in Advanced Output?

Re: Two Videos, 1 Over the 2nd, Slightly Smaller

Posted: Thu May 05, 2022 13:41
by Zoltán
I think this should be done partly in the Composition.
That will give you a lot more flexibility.

I'd probably make a circular (octagon if you need that) mask on a slice in the advanced output, and use that with the slice transform effect on my top layer as mask. (unchecked in the advanced output)
Then have a regular slice to take all the input from the composition.

I don't have anything applied to the bottom layer, so it will show in full when the top layer is not playing, but you can make a duplicate of the mask slice, invert the mask, and use that on layer 1.
Then you can mask the surroundings in the Output transformation if you need.

Re: Two Videos, 1 Over the 2nd, Slightly Smaller

Posted: Sat May 07, 2022 18:41
by waffleicious
Thank you for the suggestions! I now know a bit more about slice transform!

The solution was incredibly simple, though. All I needed to do was put an input mask over slice 1 that was smaller than the border input mask on slice 2.

I was trying to make masks in the output screen which is why I had the confusion. Masking on the Input screen made it work flawlessly :D