Don't get me wrong, documenting your work is very important, but do it efficiently.
Github Readme's are turning more and more into developer myspace.
Just keep it text, to the point, start with why someone should care, then once they care, show them how to use it.
When I see some kind of video embed, it's a huge turn off, I don't want to watch some animation of your typos at high speed, or your fish terminal.
"Show me the money".
Edit: my point is: spend your time making your code better, sorting, fixing and clear your issues and merge or reject decade old PRs /s