You don't have to be a seasoned veteran programmer to notice that controling our player is based on using shortcodes. Shortcodes are a part of the WordPress core and they are specifically designed for simplifying the use of code in the editor.
You can think of them as a set of pre-defined macros - a series of words, shortcuts and symbols, that have to be used with an appropriate syntax and will trigger a specific response. In this case it's generating an HTML or other markup. Shortcodes in WordPress are easily recognizable as they are always using the square brackets - "". For example, one of the default shortcodes in WordPress is
FV Player's shortcode usually looks like this:
[fvplayer src="https://vimeo.com/196881410" splash="https://i.vimeocdn.com/video/609485450_1280x720.jpg?r=pad" caption="Foliovision Promo Video"]