Answer by samicsc0 for Tell whether video is loaded or not in Javascript

I find other way

    const video = document.querySelector('video');video.addEventListener('canplaythrough', (event) => {  console.log('I think I can play through the entire '+'video without ever having to stop to buffer.');});

source - https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canplaythrough_event