原文链接:https://blog.csdn.net/SeniorShen/article/details/113246990
1、引入依赖
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-core</artifactId>
<version>3.0.0</version>
</dependency>
<!-- 在windows上开发 开发机可实现压缩效果 window64位 -->
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-nativebin-win64</artifactId>
<version>3.0.0</version>
</dependency>
<!-- 在linux上部署 linux服务器需要这个才能生效 linux64位 -->
<dependency>
<groupId>ws.schild</groupId>
<artifactId>jave-nativebin-linux64</artifactId>
<version>3.0.0</version>
</dependency>
2、具体代码
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import tv.morefun.credit.common.base.BOException;
import ws.schild.jave.Encoder;
import ws.schild.jave.MultimediaObject;
import ws.schild.jave.encode.AudioAttributes;
import ws.schild.jave.encode.EncodingAttributes;
import ws.schild.jave.encode.VideoAttributes;
import ws.schild.jave.info.AudioInfo;
import ws.schild.jave.info.VideoSize;
import java.io.File;
/**
* @Auther: hys
* @Date: 2021/8/26 18:26
* @Description:
*/
public class VideoCompressionUtil {
private static final Logger LOG = LoggerFactory.getLogger(VideoCompressionUtil.class);
/**
* 传视频File对象(这是一个具体的文件),返回压缩后File对象信息
*
* @param source 源文件
* @param newPath 压缩后的文件保存路径(目标路径)
* @return
*/
public static File compressionVideo(File source, String newPath) throws BOException {
if (source == null) {
return null;
}
// String newPath = source.getAbsolutePath().substring(0, source.getAbsolutePath().lastIndexOf(File.separator)).concat(File.separator).concat(picName);
LOG.info("============>>>newPath:" + newPath);
File target = new File(newPath);
try {
MultimediaObject object = new MultimediaObject(source);
AudioInfo audioInfo = object.getInfo().getAudio();
LOG.info("==========>>>开始压缩视频,视频初始大小:{}kb", (int) (source.length() / 1024));
long time = System.currentTimeMillis();
// 视频属性设置
int maxBitRate = 128000;
int maxSamplingRate = 44100;
int bitRate = 800000;
int maxFrameRate = 20;
int maxWidth = 1280;
AudioAttributes audio = new AudioAttributes();
// 设置通用编码格式10 audio.setCodec("aac");
// 设置最大值:比特率越高,清晰度/音质越好
// 设置音频比特率,单位:b (比特率越高,清晰度/音质越好,当然文件也就越大 128000 = 182kb)
if (audioInfo.getBitRate() > maxBitRate) {
audio.setBitRate(maxBitRate);
}
// 设置重新编码的音频流中使用的声道数(1 =单声道,2 = 双声道(立体声))。如果未设置任何声道值,则编码器将选择默认值 0。
audio.setChannels(audioInfo.getChannels());
// 采样率越高声音的还原度越好,文件越大
// 设置音频采样率,单位:赫兹 hz
// 设置编码时候的音量值,未设置为0,如果256,则音量值不会改变
// audio.setVolume(256);
if (audioInfo.getSamplingRate() > maxSamplingRate) {
audio.setSamplingRate(maxSamplingRate);
}
//TODO 视频编码属性配置
ws.schild.jave.info.VideoInfo videoInfo = object.getInfo().getVideo();
VideoAttributes video = new VideoAttributes();
video.setCodec("h264");
//设置音频比特率,单位:b (比特率越高,清晰度/音质越好,当然文件也就越大 800000 = 800kb)
if (videoInfo.getBitRate() > bitRate) {
video.setBitRate(bitRate);
}
// 视频帧率:15 f / s 帧率越低,效果越差
// 设置视频帧率(帧率越低,视频会出现断层,越高让人感觉越连续),视频帧率(Frame rate)是用于测量显示帧数的量度。所谓的测量单位为每秒显示帧数(Frames per Second,简:FPS)或“赫兹”(Hz)。
if (videoInfo.getFrameRate() > maxFrameRate) {
video.setFrameRate(maxFrameRate);
}
// 限制视频宽高
int width = videoInfo.getSize().getWidth();
int height = videoInfo.getSize().getHeight();
if (width > maxWidth) {
float rat = (float) width / maxWidth;
video.setSize(new VideoSize(maxWidth, (int) (height / rat)));
}
EncodingAttributes attr = new EncodingAttributes();
// attr.setFormat("mp4");
attr.setAudioAttributes(audio);
attr.setVideoAttributes(video);
// 设置线程数
// attr.setEncodingThreads(Runtime.getRuntime().availableProcessors()/2);
Encoder encoder = new Encoder();
MultimediaObject multimediaObject = new MultimediaObject(source);
encoder.encode(multimediaObject, target, attr);
LOG.info("压缩总耗时:{}s,视频压缩后大小:{}kb", (System.currentTimeMillis() - time) / 1000, (int) (target.length() / 1024));
return target;
} catch (Exception e) {
e.printStackTrace();
throw new BOException("视频压缩异常");
} finally {
if (target.length() > 0) {
source.delete();
}
}
}
public static void main(String[] args) throws BOException {
File file = new File("F:\\picture\\video.MP4");
System.out.println(file.length());
File ceshi = compressionVideo(file, "F:\\picture\\video1.MP4");
System.out.println(ceshi.length());
}
}
可能出现问题:
1、首先找到对应的jar包
注意:linux解压linux下的jar,window解压window下的jar,别搞混了
2、解压后的文件:修改文件名,和引入的maven保持一致
3、复制到对应的tomcat目录下