VLCJ 显示带有音频声音的黑屏

Question

基本上，我不知道我的错误在哪里，因为我试图使用 java 嵌入一个 vlcj 播放器，但是当我运行这个文件时，它只显示带有音频声音的黑屏而不是视频。

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);
}

Answer 1

您的框架没有内容，您从未向其添加任何内容。

您需要将面板添加到框架中。

有许多方法可以做到这一点，在这种情况下，最简单的做法是：

frame.setContentPane(panel);

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