This plugin lets you easily use the official asciinema-player.
An asciicast is a recording made with asciinema. Upload your asciicast
anywhere in your web server; you can do that within
Wordpress (just go to the “Media>Add New” menu and upload your asciicast).
Enter the HTML editor to write a post or a page. Then add the
following HTML tag: <asciinema-player src="/demo.json"></asciinema-player>.
Remember to replace the value of the src attribute with the location of
your asciicast.
You can use every option of asciinema-player. Check out
its readme
to find out every option.