A small simple plugin that provides a "9-slice" (a.k.a. 9-slicing, 9-patch, or Scale 9 grid) filter for OBS.
filter-9slice-wip.mp4
A scaled-up 48 pixel square image where the 9-slice filter is turned on and off.
9-slice scaling is a 2D image resizing technique that attempts to keep the edges of an image proportional as the size changes.
Check the Wikipedia page for more information.
(Image CC BY-SA 4.0)