最近公司有个项目要求使用将视频文件用H5展现出来，但是视频文件是avi格式的，而使用h5的viedo标签只能展现mp4格式同时编码方式是H264的，那么问题来了需要转码.
找了好多资料，有的是电脑上按照ffmpeg这个东西，然后写命令转码。但是后面我又从gitee上找到一个开源的Jave2（https://github.com/a-schild/jave2）版本的，之前找到的是jave1版本的，地址（http://www.sauronsoftware.it/projects/jave/manual.php）.
使用jave2需要选择对应得环境，同时要把依赖加进去，我本地是windows64位的，加载依赖
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-core</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-nativebin-win64</artifactId>
<version>2.5.0</version>
</dependency>
各个环境要选择好，不然会报错在转换的时候，
下面是我写的将avi转换成mp4的Java
/**
* Project Name:springboot-salary
* File Name:VideoConvertMain.java
* Package Name:com.sundy
* Date:2019年7月4日上午8:02:56
* Copyright (c) 2019, wangkui5@auxgroup.com All Rights Reserved.
*
*/
package com.sundy;
import java.io.File;
import ws.schild.jave.AudioAttributes;
import ws.schild.jave.Encoder;
import ws.schild.jave.EncoderException;
import ws.schild.jave.EncodingAttributes;
import ws.schild.jave.InputFormatException;
import ws.schild.jave.MultimediaInfo;
import ws.schild.jave.MultimediaObject;
import ws.schild.jave.VideoAttributes;
import ws.schild.jave.VideoSize;
/**
* ClassName:VideoConvertMain <br/>
* Date: 2019年7月4日 上午8:02:56 <br/>
* @作者 sundy.wangkui
* @描述
* @版本 1.0.0
*
*/
public class VideoConvertMain {
public static void main(String[] args) throws Exception, EncoderException, Exception {
String sourcePath="D:\\avifile\\20190614142215.avi";
String targetPath="D:\\avifile\\test0010.mp4";
String demoPath="D:\\avifile\\demo.mp4";
File source=new File(sourcePath);
File target=new File(targetPath);
File demoPathFile=new File(demoPath);
/*
MultimediaObject instance = new MultimediaObject(demoPathFile);
MultimediaInfo result = instance.getInfo();
System.out.println(result.getVideo().getDecoder());
Encoder encoder = new Encoder();
String[] encoderResult = encoder.getVideoEncoders();
if(encoderResult!=null && encoderResult.length>0) {
for(int i=0;i<encoderResult.length;i++) {
System.out.println(encoderResult[i]);
}
}*/
test01(source,target);
}
public static void test01(File source,File target) throws Exception, InputFormatException, EncoderException {
AudioAttributes audio = new AudioAttributes();
audio.setCodec("aac");
audio.setBitRate(new Integer(64000));
audio.setChannels(new Integer(2));
audio.setSamplingRate(new Integer(22050));
VideoAttributes video = new VideoAttributes();
video.setCodec("libx264");
video.setBitRate(new Integer(160000));
video.setFrameRate(new Integer(15));
video.setSize(new VideoSize(800, 600));
EncodingAttributes attrs = new EncodingAttributes();
attrs.setFormat("mp4");
attrs.setAudioAttributes(audio);
attrs.setVideoAttributes(video);
Encoder encoder = new Encoder();
encoder.encode(new MultimediaObject(source), target, attrs);
}
}
，然后在网页html里面使用viedo加载就可以了，但是服务端配置nginx要注意了，
要加上标红的是哪个参数配置，不然浏览器里面打开播放不了。
