GStreamer gtksink sample

public static void main (string[] args) {
    X.init_threads();
    Gst.init (ref args);
    Gtk.init (ref args);

    var sink = Gst.ElementFactory.make ("gtksink", "sink");
    var playbin = Gst.ElementFactory.make ("playbin", "bin");
    playbin["video-sink"] = sink;
    playbin["uri"] = "http://www.nicolas-hoffmann.net/animations/Cavernae_Terragen2.mp4";
    Gtk.Widget area;
    sink.get ("widget", out area);
    var win = new Gtk.Window();
    var bar = new Gtk.HeaderBar();
    bar.title = "Test";
    bar.show_close_button = true;
    win.set_titlebar (bar);
    win.add (area);
    win.realize.connect (() => {
        playbin.set_state (Gst.State.PLAYING);
    });
    win.set_size_request (400, 300);
    win.show_all();
    Gtk.main();
}