Id like to have a projector setup inside  a tent/marquee and probably point it into the corner. I was thinking a simple form of projection mapping can be used to align the output correctly so the image isnt distorted, but wraps itself into the corner of the tent

I might be using some P5 sketches, but the main output I wanted to project was from Milkdrop, so this runs in its own window

Firstly, what is the best way (and fastest, preferably as close to 60fps as possible) way to grab this video? The only way i've found so far is to use webcam software to grab the region, and the P5s Video library to use it as input for projection mapping, but this is quite alot slower than desired

Can P5 not grab another windows video itself?

Also, the actual projection mapping, ive found some test sketches but im not sure they work as i need, i need to have 6 points, the top and bottom of the far left and right, and the top and bottom of the center seem (corner of tent)

Is it preferable to do this with Processing? Or is there a much more suited application that can use a windows output and do the mapping itself (something like VVVV but not so full on)

Thanks guys :)