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我在java中使用xugglu以切换输入MP3文件的比特率,将它存储在输出文件中。我在网上找到了一个例子,将文件加载到阅读器中,并添加了一个作为侦听器的作者。有谁知道我该如何修改比特率?更改mp3的比特率
这是我一直在使用的代码:
import com.xuggle.mediatool.IMediaReader;
import com.xuggle.mediatool.IMediaViewer;
import com.xuggle.mediatool.IMediaWriter;
import com.xuggle.mediatool.ToolFactory;
import org.slf4j.LoggerFactory;
public class TranscodingExample {
private static final String inputFilename = "/home/user/Desktop/file_changed.mp3";
private static final String outputFilename = "/home/user/Desktop/file_changed.flv";
public static void main(String[] args) {
// create a media reader
IMediaReader mediaReader =
ToolFactory.makeReader(inputFilename);
// create a media writer
IMediaWriter mediaWriter =
ToolFactory.makeWriter(outputFilename, mediaReader);
// add a writer to the reader, to create the output file
mediaReader.addListener(mediaWriter);
// create a media viewer with stats enabled
IMediaViewer mediaViewer = ToolFactory.makeViewer(true);
// add a viewer to the reader, to see the decoded media
mediaReader.addListener(mediaViewer);
// read and decode packets from the source file and
// and dispatch decoded audio and video to the writer
while (mediaReader.readPacket() == null) ;
}
}
编辑-1:
我不能真正解决这个问题,所以我只是用Linux命令这样做在Java中应用程序。你可以找到代码here的参考。我使用的命令是:
ffmpeg -i in.mp3 -b 112k out.mp3
它将mp3转换为等于112k的新比特率。