Sat Feb 27, 2021 2:08 pm
I think I see what you're saying. I wouldn't use adjustment clips to create a re-usable picture-in-picture effect. An adjustment clip affects everything stacked underneath it, and that's just going to create a mess when you're trying to use different layers with different transformations.
Try the new video collage effect. Read what the new features guide says about it. Use the "Create Tile" Workflow. Save one instance of it in your media pool or power bins once you've got it tweaked the way you want it, copy and paste attributes to instantiate instances of it onto new clips, and then all you have to change in each new instance is the "Active Tile" dropdown to assign clips to their corresponding windows.
If the copy-paste attributes workflow feels a little hack-y and you want something more structured, you could try to implement it as a Fusion Effect, which is also new in R17. The benefit would be that it would be listed in the effects library, you could apply it with one-click, and build yourself custom controls in the inspector.
-MacBook Pro (14,3) i7 2.9 GHz 16 GB, Intel 630, AMD 560 x1
-[DR 17.0 Beta9]