Reproducir video con JavaFX y HTML5

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.web.WebView;
import javafx.stage.Stage;

public class TestVideo extends Application {

    @Override
    public void start(Stage primaryStage) {
        WebView webview = new WebView();
        webview.getEngine().loadContent(""
                + "<video src=\"VIDEO_AQUI\" type=\"video/mp4\" controls>\n" 
                + "Video tag not supported <code>video</code>.\n"
                + "</video>");
        webview.setPrefSize(600, 400);
        primaryStage.setScene(new Scene(webview));
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}