Ability to inverse render region - in order too render bleed (outside borders) for already existing frames

[BeneZ]

I had recently the situation, where I only needed more bleed on all four sides of an image sequence.
This means, that just the image borders are interesting, not the center.

A simple ability to inverse the render region selection would save in such cases a vast amount of time.
So I had to rerender everything completely again…

[SonyBoy]

It would be a total hack, but I wonder if parenting a black plane to the camera to obscure most of your FOV might have given you a similar result and would have at least sped up render times?

[yolov]

Maybe you can use the render mask feature in texture mode, if you can create a solid black/white (with no bordering grey pixels) mask for your region and the inverse of it.
Other than that, it sounds like a good thing to have, I'll put it up for internal discussion.