Move Render Region With Animation I am exporting my animation as single frames (.png) I need the contents of the exported frame to only be of the animated object. I am using Render Regions in conjunction with the Crop to Render Region checkbox checked.

This works great but as my object animates it moves outside the region of my Render Region.
Is there a way to get the Render Region to follow the animation? Or is there an alternative way to only render a particular area of your scene and keep it in sync with your object's movement during animation?
Here is an example of my current output where my cube leaves the Render Region:

I would like to see the cube in each frame exported.
It's not possible to have the render region track an object by default, however, I did make an add-on for this exact purpose: 'Animated Render Border',
available on the Blender Market here.

(Gif is from 2.79, but the add-on works with 2.8+.)
The add-on can track an object by looking at the object's bounding box, or more precisely, using its vertices (if it is a mesh, curve, armature (uses bones) or lattice). It can track collections of objects and it also has a mode to allow a more manual fine tuning ('Keyframe' mode).