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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.

enter image description here

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:

enter image description here

I would like to see the cube in each frame exported.

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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.

enter image description 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).

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Move your camera. (ctrl+ alt+ 0) / select your camera https://docs.blender.org/manual/en/latest/render/cameras.html If you need your camera to follow your animation , either parent the camera (ctrl+p) to the cube or put a track-to constraint on it. If you need a secondary camera, add a camera and then ctrl + 0 that camera for this animation close up.

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  1. Add an empty and camera in location (0,0,0) enter image description here
  2. Parent the camera with empty. Set the camera angle to be (0,90,0)
  3. Make the empty to Track to the object you want to focus on.Choose the track to object
  4. Animate your object as you wish.enter image description here
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