Get the original dimensions of a <video>

You can do that with native Javascript :

var video = $("#myvideo" ); //JQuery selector 
video[0].videoWidth; //get the original width
video[0].videoHeight; //get the original height

To get know too :

video[0].width; //get or set width for the element in DOM
video[0].height; //get or set height for the element in DOM

For more information you can check those links from W3 : videoWidth , videoHeight

The solutions posted didn't work for me. If anyone has the same issue, my solution may help out.

const video = document.getElementById("myVid")

video.addEventListener('loadeddata', function(e) {
    let width = e.target.videoWidth
    let height = e.target.videoHeight

    let elWidth = e.target.width
    let elHeight = e.target.height

 }, false)

Check it on https://codepen.io/guerrato/pen/aYNeaW