Java vlcj显示带有音频的黑屏

基本上，我不知道我的错误在哪里，因为我正在尝试使用java嵌入vlcj播放器，但是当我运行这个文件时，它只显示一个带有音频而不是视频的黑屏

public class Play2 {

private MediaPlayerFactory mediaPlayerFactory;
// Create a new media player instance for the run-time platform
private EmbeddedMediaPlayer mediaPlayer;
private JFrame frame;
private String url;
private Canvas canvas;


public Play2(String url) {
this.url = url;

//Creation a media player :
mediaPlayerFactory = new MediaPlayerFactory();
mediaPlayer = mediaPlayerFactory.newEmbeddedMediaPlayer();
canvas = new Canvas();
JPanel panel=new JPanel();
panel.add(canvas, BorderLayout.CENTER);
mediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(canvas));
//CanvasVideoSurface videoSurface = mediaPlayerFactory.newVideoSurface(canvas);
//mediaPlayer.setVideoSurface(videoSurface);

//Construction of the jframe :
frame = new JFrame("Demo with Canvas AWT");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocation(100, 100);
frame.setSize(700, 500);
frame.setVisible(true);

//Playing the video
mediaPlayer.playMedia(url);
}

public static void main(String[] args) {
NativeLibrary.addSearchPath("libvlc", "C:\\Program Files (x86)\\VideoLAN\\VLC");

final String url = "C:\\Users\\goldAnthony\\Videos\\Whistle.mp4";

new Canvas_Demo(url);

}

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您的框架没有内容，您从未添加任何内容

您需要将面板添加到框架中

有很多方法可以做到这一点，在这种情况下，最简单的方法是：

frame.setContentPane(panel);

您还应该考虑使用vlcj的EmbeddedMediaPlayerComponent，它更容易设置（代码行数更少）