使用 JMF 调整视频大小
我正在尝试使用 JMF 在我的 java 应用程序中播放视频。 该视频播放正常,但我正在尝试将视频放大。 下面的代码被放置在另一个带有 gridbag 布局的 jpanel 中。
我目前添加它时没有 FILL 约束,因此它应该以其正常大小显示。
当我添加填充约束时,它会拉伸视频,使宽高比倾斜。
我想我问是否有人知道如何手动调整视频大小或如何锁定宽高比
public class VideoPanel extends JPanel{
private Player mediaPlayer;
private File file;
public VideoPanel(String videoFile, String path){
setOpaque(false);
file = new File(path+"/video/"+videoFile);
URL mediaURL = null;
try {
mediaURL = file.toURI().toURL();
} catch (MalformedURLException e) {
e.printStackTrace();
}
setLayout( new BorderLayout() );
Manager.setHint( Manager.LIGHTWEIGHT_RENDERER, true );
try{
mediaPlayer = Manager.createRealizedPlayer( mediaURL );
Component video = mediaPlayer.getVisualComponent();
Component controls = mediaPlayer.getControlPanelComponent();
double scale = getScale(this.getWidth(),this.getHeight(),video.getWidth(),video.getHeight());
video.setPreferredSize(new Dimension((int)scale*video.getWidth(),(int)scale*video.getHeight()));
if(video != null)
add(video,BorderLayout.CENTER );
if(controls != null)
add(controls,BorderLayout.SOUTH );
}
catch ( NoPlayerException noPlayerException ){
System.err.println( "No media player found" );
}
catch ( CannotRealizeException cannotRealizeException ){
System.err.println( "Could not realize media player" );
}
catch ( IOException iOException ){
System.err.println( "Error reading from the source" );
}
}
private double getScale(int panelWidth, int panelHeight, int imageWidth, int imageHeight) {
double scale = 1;
double xScale;
double yScale;
xScale = (double) panelWidth / imageWidth;
yScale = (double) panelHeight / imageHeight;
scale = Math.min(xScale, yScale);
return scale;
}
public void stopPlay(){
mediaPlayer.stop();
}
}
Im trying to play a video in my java application using JMF. The video is playing fine but im trying to make the video larger. the code below is being placed inside another jpanel with a gridbag layout.
I currently have it being added with no FILL constraint so it should be displaying at its normal size.
When i do add a fill constraint it stretches the video skewing the aspect ratio.
I guess im asking if anyone knows how to resize a video manually or how to lock the aspect ratio
public class VideoPanel extends JPanel{
private Player mediaPlayer;
private File file;
public VideoPanel(String videoFile, String path){
setOpaque(false);
file = new File(path+"/video/"+videoFile);
URL mediaURL = null;
try {
mediaURL = file.toURI().toURL();
} catch (MalformedURLException e) {
e.printStackTrace();
}
setLayout( new BorderLayout() );
Manager.setHint( Manager.LIGHTWEIGHT_RENDERER, true );
try{
mediaPlayer = Manager.createRealizedPlayer( mediaURL );
Component video = mediaPlayer.getVisualComponent();
Component controls = mediaPlayer.getControlPanelComponent();
double scale = getScale(this.getWidth(),this.getHeight(),video.getWidth(),video.getHeight());
video.setPreferredSize(new Dimension((int)scale*video.getWidth(),(int)scale*video.getHeight()));
if(video != null)
add(video,BorderLayout.CENTER );
if(controls != null)
add(controls,BorderLayout.SOUTH );
}
catch ( NoPlayerException noPlayerException ){
System.err.println( "No media player found" );
}
catch ( CannotRealizeException cannotRealizeException ){
System.err.println( "Could not realize media player" );
}
catch ( IOException iOException ){
System.err.println( "Error reading from the source" );
}
}
private double getScale(int panelWidth, int panelHeight, int imageWidth, int imageHeight) {
double scale = 1;
double xScale;
double yScale;
xScale = (double) panelWidth / imageWidth;
yScale = (double) panelHeight / imageHeight;
scale = Math.min(xScale, yScale);
return scale;
}
public void stopPlay(){
mediaPlayer.stop();
}
}
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
您可能只想将视频组件放入另一个容器面板中并从容器中控制大小。 在我的应用程序中,我在 JFrame 中设置了视频组件,并且要调整视频大小,我只需调整容器大小即可。
You may just want to throw the video component in another container panel and control the size from the container. In my app, I have the video component set in a JFrame and to resize the video I simply resize my container.