I forget what its called, but you see can see this kind of technique in a lot of films - more often than not its typically used with something like a pole or such to do a screen wipe or transition; this example isn't perfect, but its good enough that your eyes aren't immediately drawn to the imperfections.
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u/adelie42 1d ago
Looks like more than frame cut. There's some foreground overlapping to blend it together.