stream-bookmarklet.js

javascript: (function () {
    var video = document.querySelector("video.jw-video");
    if (video === null) {
        alert("Could not find video object");
        return;
    }

    var src = encodeURIComponent(video.src);
    if (src.indexOf("redirector.googlevideo.com") === -1) {
        alert("Could not find video source");
        return;
    }

    fetch("http://192.168.192.170:8080/stream?url=" + src).then(function (resp) {
        if (resp.status === 200) {
            video.remove();
            alert("Streaming video");
        } else {
            alert("Error streaming video");
        }
    })
})();