How to add a video to the site so that it is displayed to everyone on the same timecode, and after it the necessary script is executed?

Question

JavaScript

How to add a video to the site so that it is displayed to everyone on the same timecode, and after it the necessary script is executed? And what do you need to use ajax or node js for that?

Answer 1

do not forget - video, like sound, cannot be launched programmatically on mobile browsers