Multiple players on page

Pause players on same page when one of them starts playing

This is Nuevo plugin built-in functionality which does not require any setup. If you have multiple video.js players on the same page (each with a different ID), when one of them starts the others are automatically paused.
You may always disable this automatic behavior of multiple players by disabling appropriate Nuevo plugin option:
Code snippet
player.nuevo ({ singlePlay:false });