Audio converting with Xuggler

Question

I\'m trying to convert aac/wav/wma audio files to mp3 with Xuggler in Java.

Unfortunately, I have a big loss of quality. My input file size is about 7MB and my output fi

Answer 1

I'll do something like this:

public void convertToMP3(File input, File output, int kbps) { //modify on your convenience
    // create a media reader
    IMediaReader mediaReader = ToolFactory.makeReader(input.getPath());

    // create a media writer
    IMediaWriter mediaWriter = ToolFactory.makeWriter(output.getPath(), mediaReader);

    // add a writer to the reader, to create the output file
    mediaReader.addListener(mediaWriter);

    // add a IMediaListner to the writer to change bit rate
    mediaWriter.addListener(new MediaListenerAdapter() {
        @Override
        public void onAddStream(IAddStreamEvent event) {
            IStreamCoder streamCoder = event.getSource().getContainer().getStream(event.getStreamIndex()).getStreamCoder();
            streamCoder.setFlag(IStreamCoder.Flags.FLAG_QSCALE, false);
            streamCoder.setBitRate(kbps);
            streamCoder.setBitRateTolerance(0);
            }
        });

    // read and decode packets from the source file and
    // and dispatch decoded audio and video to the writer
    while (mediaReader.readPacket() == null);
}

input is the File (aac/wav/wma) you want to convert and output is a new .mp3 file (Xuggler figure out the conversion by the extension).

You can increase the quality increasing kbps (i.e. for 320 kbps you need to pass in 320000).

Hope that helps :-)

FYI: for Java projects you'll need to import the following if you haven't already done so:

import com.xuggle.mediatool.MediaListenerAdapter;
import com.xuggle.mediatool.event.IAddStreamEvent;
import com.xuggle.xuggler.IStreamCoder;