java视频压缩

public class FfmepgDemo {    public static void main(String[] args) {        File source = new File("D:/xxx.mp4");        File target = new File("D:/xxx1.mp4");        try{            AudioAttributes audio = new AudioAttributes();            audio.setCodec("libmp3lame");            audio.setBitRate(new Integer(56000));            audio.setChannels(new Integer(1));            audio.setSamplingRate(new Integer(22050));            VideoAttributes video = new VideoAttributes();            video.setCodec("mpeg4");            video.setBitRate(new Integer(800000));            video.setFrameRate(new Integer(15));            EncodingAttributes attrs = new EncodingAttributes();            attrs.setFormat("mp4");            attrs.setAudioAttributes(audio);            attrs.setVideoAttributes(video);            Encoder encoder = new Encoder();            encoder.encode(source, target, attrs);        }catch (EncoderException e){            e.printStackTrace();        }    }}

需要jave.jar