Reproduzir video com javafx

Programação
#1

eu estou começando a estudar javafx e queria fazer uma simples tela que reproduzisse um video o meu codigo é o seguinte:

private String VIDEO_URL = getClass().getResource("C:\\Users\\Victor\\Videos\\amostra.mp4").toString();


    public static void main(String[] args) {
  launch(); // 2
 }

 @Override
 public void start(Stage palco) throws Exception {

  Media media = new Media(VIDEO_URL); // 1
  MediaPlayer mediaPlayer = new MediaPlayer(media); // 2
  MediaView mediaView = new MediaView(mediaPlayer); // 3

  StackPane raiz = new StackPane();
  raiz.getChildren().add(mediaView); // 4
  Scene cena = new Scene(raiz, 600, 400);
  palco.setTitle("Tocando Video em JavaFX");
  palco.setScene(cena);
  palco.show();

  mediaPlayer.play(); // 4
 }

mas ele exibe o erro:

Exception in Application constructor
java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class hellofx.HELLOFX
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:890)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
	at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
	at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:802)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
	at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
	... 1 more
Caused by: java.lang.NullPointerException
	at hellofx.HELLOFX.<init>(HELLOFX.java:24)
	... 14 more
Exception running application hellofx.HELLOFX
C:\Users\Victor\Documents\NetBeansProjects\HELLOFX\nbproject\build-impl.xml:1339: The following error occurred while executing this line:
C:\Users\Victor\Documents\NetBeansProjects\HELLOFX\nbproject\build-impl.xml:948: Java returned: 1

a linha 24 seria a:
private String VIDEO_URL = getClass().getResource("C:\\Users\\Victor\\Videos\\amostra.mp4").toString();

o que pode ser?

#2

Se vc quer pegar a URL, não precisa fazer dessa forma, basta atribuir a URL na variável:

String VIDEO_URL = "c:\\Users\\Victor\\Videos\\amostra.mp4";

Agora, se o arquivo do vídeo estiver dentro do seu projeto, vc tem que fazer da forma como vc fez, porém, utilizando o caminho relativo.

#3

eu pensei na mesma coisa mas ainda dá o mesmo erro, eu tentei colocar a URL direto no Media e não funcionou e apresentou o mesmo erro

#4

Tenta assim
pivate String VIDEO_URL = "file:///C:/Users/Victor/Videos/amostra.mp4";