Text Box in After Effect

This After Effect Script can create box behind your text and the box changes according to the size of the text,

You can control horizontal padding, vertical padding, corner radius, box opacity, and box color.

C:\Program Files\Adobe\Adobe After Effects <version>\Support Files\Scripts

Steps to Follow:

1. Paste the script in the given Location
2. Restart After Effects
3. Open from:
4.  File → Scripts