That might be a lot of work and double the
requirements on the processor if it's 2 full graphs. All the code may need to be doubled or loops for everything. Graph[n].blah
I think the easiest way to do it would be 2 preview renderers with the small one overlaying the other, resizing and popping the small one to front. That way you don't have to merge the streams. It's kind of fake though.
Otherwise a PIP filter? What if the 2 devices are at different resolutions? I guess it has to be decimated to 1/4 or less anyway, but hey what could go wrong? lol
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