代码

import cn.hutool.core.exceptions.ExceptionUtil;
import cn.hutool.core.io.FileUtil;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.util.CharsetUtil;
import lombok.extern.slf4j.Slf4j;
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.process.ProcessWrapper;
import ws.schild.jave.process.ffmpeg.DefaultFFMPEGLocator;import java.io.File;
import java.io.InputStream;/*** 多媒体文件处理工具包*/
@Slf4j
public class FfmpegUtil {/*** mp4转mp3** @param src  源文件* @param dest 目标文件*/public static void mp4ToMp3(String src, String dest) {FileUtil.writeUtf8String("", dest);File fileMp4 = new File(src);File fileMp3 = new File(dest);AudioAttributes audio = new AudioAttributes();EncodingAttributes attrs = new EncodingAttributes();attrs.setOutputFormat("mp3");attrs.setAudioAttributes(audio);Encoder encoder = new Encoder();MultimediaObject mediaObject = new MultimediaObject(fileMp4);try {encoder.encode(mediaObject, fileMp3, attrs);} catch (Exception e) {log.error(ExceptionUtil.stacktraceToString(e));}}/*** 获取第一帧*/public static void firstFrame(String src, String dest) {FileUtil.writeUtf8String("", dest);ProcessWrapper ffmpeg = new DefaultFFMPEGLocator().createExecutor();try {ffmpeg.addArgument("-i");ffmpeg.addArgument(src);ffmpeg.addArgument("-y");ffmpeg.addArgument("-ss");// 此处可自定义视频的秒数ffmpeg.addArgument("1");ffmpeg.addArgument("-vframes");ffmpeg.addArgument("1");ffmpeg.addArgument(dest);ffmpeg.execute();InputStream errorStream = ffmpeg.getErrorStream();String read = IoUtil.read(errorStream, CharsetUtil.UTF_8);System.out.println(read);} catch (Exception e) {log.error(ExceptionUtil.stacktraceToString(e));} finally {ffmpeg.close();}}
}

依赖

<!--hutool工具包--><dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.7.15</version></dependency><!--java多媒体处理工具包--><dependency><groupId>ws.schild</groupId><artifactId>jave-all-deps</artifactId><version>3.2.0</version></dependency>