Mutiny This is actually something I've been thinking a lot about. It's tricky to pull it off and, like you say, would require testing and a lot of planning...but it's totally doable.
I ask for your patience, but...challenge accepted!
Nice! If you could pull it off, I think it would be really cool!
Mutiny There are a few ways to tackle it, from precise control of framing/blocking (so the performer doesn't cross over where her double will be) then using a simple matte to combine the two takes, all the way to using greenscreen/difference mattes/other keying tools to layer them. But it's not just about separating them in the frame, you also have to consider depth. If you use a mask to key out one and place them over the other, the effect will break your brain if they're located in the same slice of depth from the lens, or if the one keyed behind the other is actually closer to the lens. Your eyes and your brain will disagree on what's happening and it's deeply unpleasant.
This was my question as well. How does depth affect the split screen? Does the line where the two individual takes join act differently when depth is involved? Will it have a weird effect on the brain?
It will be interesting to see what tests reveal.
Bucket619 i swear ive seen somewhere a VR scene where someone plays together with themselves in VR. Found it , it’s a Jav scene from SOD that has Eimi Fukada . here is the link https://www.sexlikereal.com/scenes/eimi-fukada-standoffish-eime-and-doting-eimie-come-at-you-from-both-sides-19112
I had forgot. But now that you mention it, I do remember someone else mentioning that particular scene to me. Thanks for the link. I’ll definitely take a look.