java实现，无损视频大小压缩。

<!--依赖-->
<!-- https://mvnrepository.com/artifact/it.sauronsoftware/jave -->
<dependency>
    <groupId>it.sauronsoftware</groupId>
    <artifactId>jave</artifactId>
    <version>1.0.2</version>
</dependency>

代码

import it.sauronsoftware.jave.AudioAttributes;
import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncodingAttributes;
import it.sauronsoftware.jave.VideoAttributes;

import java.io.File;

public class mian {


    public static void main(String[] args) {
        //原
        File source = new File("F:\\MP4\\old\\1.mp4");
        //新 
        File target = new File("F:\\MP4\\new\\1.mp4");
        try {
            System.out.println("begin");
            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 attr = new EncodingAttributes();
            attr.setFormat("mp4");
            attr.setAudioAttributes(audio);
            attr.setVideoAttributes(video);
            Encoder encoder = new Encoder();
            encoder.encode(source, target, attr);
            System.out.println("end");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


}