How do I keep the corners of a rectangular mask at 90 degrees and expand it in premiere? I am not talking about the "mask expansion" effect, which only goes so far and give my rectangle rounded edges. I want to create a large rectangle from the rectangle mask, but when i click on a corner or two pressing "shift," this does not allow me to keep the shape a rectangle with 90 degree angles.
neither of the above replies was working for me. the best solution i've found so far is to hover with Shift pressed down over a corner or the mask until your cursor looks like diagonally oppositional arrows. then you can drag to expand the size of the mask, keeping it in rectangle shape. But I would like to make it a square shape, keeping the angles at 90 degrees, and have no solution for that yet.