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我在java中使用xugglu以切換輸入MP3文件的比特率,將它存儲在輸出文件中。我在網上找到了一個例子,將文件加載到閱讀器中,並添加了一個作爲偵聽器的作者。有誰知道我該如何修改比特率?更改mp3的比特率
這是我一直在使用的代碼:
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) ;
}
}
編輯-1:
我不能真正解決這個問題,所以我只是用Linux命令這樣做在Java中應用程序。你可以找到代碼here的參考。我使用的命令是:
ffmpeg -i in.mp3 -b 112k out.mp3
它將mp3轉換爲等於112k的新比特率。