do_shortcode for JW Player 2.1.6

I am trying to obtain this in my code:
do_shortcode("[jwplayer file='http://xxx.com/xxx.mp4']");

Searching, I found this article, that used jwplayer_tag_callback function: http://blog.rudylee.com/2012/01/08/execute-jwplayer-shortcode-in-wordpress-custom-template/

Unfortunately, here is the message I receive: Fatal error: Call to undefined function jwplayer_tag_callback()

What function or method could be used to replicate do_shortcode?

https://ww.wp.xz.cn/plugins/jw-player-plugin-for-wordpress/