I want to see either a persistent rectangle box on the edges of the region being recorded (anything outside the box isn’t recorded), or dim the parts of the screen that aren’t being recorded. I looked for screen recorders for hyprland & wlroots and didn’t find any with this functionality. wf-recorder + slurp works for me but I want a boundary visual.
A while ago I did this by making a custom wallpaper with a box on it and set the capture region to the box.