当应用程序运行时，会听到声音并且框架上可以看到其他按钮控件，但包含视频的面板不会显示任何黑屏，框架上也不会显示任何黑屏。
public class MediaPlayer extends JPanel {
private JFrame ourframe = new JFrame();
//Declares our media player component
private EmbeddedMediaPlayerComponent mediaplayer;
//This string holds the media URL path
private String mediapath = "";
//This string holds the vlc URL path
private final String vlcpath = "C:\\Program Files (x86)\\VideoLAN\\VLC";
private JPanel panel, panel2;
private JButton play_btn, stop_btn, foward_btn, rewind_btn, enlarge_btn;
private JSlider timeline;
public MediaPlayer(String mediapath) {
this.mediapath = mediapath;
NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), vlcpath);
mediaplayer = new EmbeddedMediaPlayerComponent();
panel = new JPanel();
panel.setLayout(new BorderLayout());
panel.add(mediaplayer, BorderLayout.CENTER); //panel containing the video
play_btn = new JButton("play");
stop_btn = new JButton("stop");
foward_btn = new JButton("ff");
rewind_btn = new JButton("rew");
enlarge_btn = new JButton("enlarge");
timeline = new JSlider(0, 100, 0);
timeline.setMajorTickSpacing(10);
timeline.setMajorTickSpacing(5);
timeline.setPaintTicks(true);
panel2 = new JPanel();
panel2.setLayout(new FlowLayout(FlowLayout.CENTER));
panel2.add(play_btn);
panel2.add(stop_btn);
panel2.add(foward_btn);
panel2.add(rewind_btn);
panel2.add(enlarge_btn);
panel2.add(timeline);
panel.add(panel2, BorderLayout.SOUTH);
add(panel);
}
public void play() {
mediaplayer.getMediaPlayer().playMedia(mediapath);
}
public static void main(String[] args) {
//Declare and initialize local variables
String mediaPath = "";
mediaPath = "C:\\Users\\goldAnthony\\Desktop\\Videos\\Whistle.mp4";
//creates instances of the VlcPlayer object, pass the mediaPath and invokes the method "run"
MediaPlayer mediaplayer = new MediaPlayer(mediaPath);
JFrame ourframe = new JFrame();
ourframe.setContentPane(mediaplayer);
ourframe.setSize(720, 560);
ourframe.setVisible(true);
mediaplayer.play();
ourframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
最佳答案
这是因为您将视频表面添加到 JPanel 时没有选择适当的布局管理器。
默认情况下，JPanel 有一个 FlowLayout，这将根据组件的首选大小来布局组件。
视频表面面板没有设置首选尺寸。
解决办法是在主面板上设置一个像BorderLayout这样的布局管理器。
所以在你的构造函数的末尾，而不是这个......
add(panel);
...执行此操作...
setLayout(new BorderLayout());
add(panel, BorderLayout.CENTER);
交叉发布于 [1]。
[1] https://groups.google.com/forum/#!topic/vlcj-users/m0zG-fx4qm8
关于java - vlcj视频不显示，但可以听到视频声音，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20728204/