document.addEventListener("DOMContentLoaded", () => {
    let xhr = new XMLHttpRequest();
    xhr.onreadystatechange = () => {
        let ctype = xhr.getResponseHeader("Content-Type");
        let player = videojs("player");
        let source = {};
        source.type = ctype;
        source.src = "{{ stream }}";
        player.src(source);
    }
    xhr.open("HEAD", "{{ stream }}", true);
    xhr.send();
});