I’d like to hear the answer to this as well, because masking is one of the few HUGE disappointments I have with Vegas.
Because…
(1) I still can’t believe there aren’t some default basic shapes available, and
(2) I don’t think masks should be “content” based at all, but “effects” based. Meaning, “mask the defocus effect” or “mask the glow”, not “mask content that has been defocused or glowed and then duplicate the track and comp it over the original.”
I put in a feature request about this ages ago, beeteedub.
–Kelly