I've setup a default Virtual set: VDoubleBox-Blur.
In box 1, I want my in-studio host closeup, and box 2 should be a vmix call.
However... my instudio camera angle is of the host with a TV screen. The screen is set to greenscreen, and I've keyed it out to input a logo. This works fine for anytime I choose that input- but when I try to bring that same input into VDoubleBox-Blur- it ignores the constraints of box 1. Now, if I pull in that camera by itself (with the logo missing, because it's just a keyed out greenscreen with nothing behind it) it fits into the box as expected. The same way the vmix call inputs all work.

I've also seen before where I add a little X and Y rotation to the logo source that's going into the TV, which again looks fine on that input- but if I then pull that input into another virtual set- the rotations appear to be applied twice? So it doesn't work anymore if the tweaks are too extreme.

Normal:


Messed Up:


So you can see in this second screenshot- the entire video screen is overlayed (1920x1080) and there is no crop. Additionally, the image I've placed in the green screen extends above and beyond the 1920x1080 constraints. Instead of the whole thing being auto-cropped into the box as shown in the first screenshot.

Your last message made the problem much clearer. Yes, layers positioned in Virtual Sets extend beyond the frame boundary, which only shows up when they are positioned & scaled, as you have discovered. One solution is to use a Mix input, which will resample the Virtual Set input so that nothing extends outside the boundaries of your 1920x1080 screen (or whatever your project resolution is). That will use some more resources and might introduce a slight delay, so it may or may not be suitable for your needs.

is this a case where https://forums.vmix.com/posts/t28059-Duplicating--copying--Layer-Settings could be useful ?

Tested this in an empty studio- and yes! It is exactly what I needed. Not sure if there is a delay or not. My system resources are all under 50%, so that's good. And that's with two Mix Inputs running. I'll do some more testing next week for audio/video sync issues.

Quick follow-up. Once I have the Mix Input the way I want it- I really won't be using it as intended, with transitions between two sources. Likewise, with some of the multi-camera virtual inputs, once I have it "setup" - I really don't need to make changes. Are there ways to collapse those inputs so they are the same size as a regular input. Meaning more clicks to get back to setup needs, but if I'm legit not using it while producing a show- I don't mind a few extra clicks on setup to gain some much needed real estate on my screen during production.

Not quite.
I'm looking to have it the size of an opened input. Like a camera or video file. Almost a square. A way to hide the "options" for the input.

I'm looking to get rid of the Preview/Output section on the Mix input, or the Camera/Setup section on a virtual set.

This is almost certainly going to be your best bet. When you click "Create Virtual Input" on the Mix output settings, you get an input that consists solely of the Mix output.

Since you're not actually using the Mix transition features at all, you can just use the Virtual Input for everything and collapse the Mix input entirely or even pretend the Mix input isn't even there. Just set everything to the Virtual Input, rather than the Mix input.

In fact, I noticed from your picture that you're not using category tabs, so like jpetrie mentioned, if you're so inclined, rather than collapsing (or even in addition to it), you can go through your inputs & set the ones you need to see/access to a specific category/tab and use that category for your main view. If that last image you posted is an accurate representation of your workflow, that might be better, since it'd remove all the clutter of the collapsed tabs.

If you're on 24 or below, you'd click the Settings cog, then click, say, the red square next to "Category" on all the inputs you want to see, then click the red square on the section above the inputs. That'd give you a view that only shows you the red square inputs, so you'd only see what you want to see, and not all of the collapsed tabs.

If you're on 25, the category tabs are even more versatile, but still function similarly.