If you are looking for a text player plugin to show changes of code then below is one that you can try
https://github.com/ranjit-singh-cc/text-player-plugin
This plugin will show a video like interface for showing the change from one text to another. A smooth scroll has been implemented to focus on the text changes. For example, if there are 2 texts “this” and “thats”, as shown below “i” has been removed and “at” has been added. So you will see two slides one with typing “this” and another with modifying “this” with “thats”.
Levenshtein Distance algorithm has been used to get the change from one text to another.
Live Demo: Click here to see the demo