java读取视频文件信息的两种方式（jave、ffmpeg）

一、通过Jave的方式读取文件信息

1. 需要一个jar包

<!-- 获取视频时长等信息 --><dependency><groupId>jave</groupId><artifactId>jave</artifactId><version>1.0.2</version><scope>system</scope><systemPath>${project.basedir}/src/main/resources/libs/jave-1.0.2.jar</systemPath></dependency>

2. java代码实现

import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncoderException;
import it.sauronsoftware.jave.MultimediaInfo;private void getVideoInfo(String filePath){File source = new File(filePath);Encoder encoder = new Encoder();try{MultimediaInfo mi = encoder.getInfo(source);System.out.println(mi.getVideo()); //视频信息System.out.println(mi.getAudio());  //音频信息String duration = LxTimeUtil.msecToTime(mi.getDuration());int width = mi.getVideo().getSize().getWidth();int height = mi.getVideo().getSize().getHeight();String format = mi.getFormat();int audioChannels = mi.getAudio().getChannels();String audioDecoder = mi.getAudio().getDecoder();int audioSamplingRate = mi.getAudio().getSamplingRate();String videoDecoder = mi.getVideo().getDecoder();float videoFrameRate = mi.getVideo().getFrameRate();System.out.println("★★★★★★★★★【"+source+"】★★★★★★★★★");System.out.println("格式:" + format);System.out.println("时长:" + duration);System.out.println("尺寸:" + width + "×" + height);System.out.println("音频编码："+ audioDecoder);System.out.println("音频轨道:" + audioChannels);System.out.println("音频采样率:" + audioSamplingRate);System.out.println("视频编码:" + videoDecoder);System.out.println("视频帧率:" + videoFrameRate);//获取视频大小FileInputStream fis = new FileInputStream(source);FileChannel fc= null;fc= fis.getChannel();BigDecimal fileSize = new BigDecimal(fc.size());}catch (Exception e) {e.printStackTrace();} finally {if (null != fc) {try {fc.close();} catch (IOException e) {e.printStackTrace();}}}
}

二、通过ffmpeg的方式读取文件信息（项目中的webm视频格式通过jave解析不了，最终换成ffmpeg）

1. 首先本地要下载ffmpeg
   http://www.ffmpeg.org/download.html
   
2. 随后在环境变量中配置ffmpeg
   
   测试是否成功读取文件信息
   
3. java代码实现
   首先引入pom文件

<dependency><groupId>oro</groupId><artifactId>oro</artifactId><version>2.0.8</version></dependency><dependency><groupId>com.alibaba.druid</groupId><artifactId>druid-wrapper</artifactId><version>0.2.9</version></dependency>

import org.apache.commons.lang3.StringUtils;
import org.apache.oro.text.regex.*;import java.io.*;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.List;
import java.util.Map;public static Map getEncodingFormat(String filePath) throws IOException {String cut = "ffmpeg -i "+ filePath;String command = "" + cut;System.out.println(command);Process process = Runtime.getRuntime().exec(new String[]{"sh", "-c", command});InputStream in = process.getErrorStream();BufferedReader br = new BufferedReader(new InputStreamReader(in));String line;StringBuffer sb = new StringBuffer();String fps = null;FileChannel fc = null;while ((line = br.readLine()) != null) {sb.append(line);if (line.contains("fps")) {String[] split = line.split(",");for (String d : split) {if (d.contains("fps")) {String[] split1 = d.split(" fps"); //提取视频文件的fpsfps = split1[0].trim();}}}continue;}String processFLVResult = sb.toString();Map retMap = new HashMap();retMap.put("fps", fps);if (org.apache.commons.lang3.StringUtils.isNotBlank(processFLVResult)) {PatternCompiler compiler = new Perl5Compiler();try {File source = new File(filePath);FileInputStream fis = new FileInputStream(source);fc = fis.getChannel();retMap.put("size", fc.size());String regexDuration = "Duration: (.*?), start: (.*?), bitrate: (\\d*) kb\\/s";String regexVideo = "Video: (.*?), (.*?\\)), (.*?)[,\\s]";String regexAudio = "Audio: (\\w*), (\\d*) Hz";Pattern patternDuration = compiler.compile(regexDuration, Perl5Compiler.CASE_INSENSITIVE_MASK);PatternMatcher matcherDuration = new Perl5Matcher();if (matcherDuration.contains(processFLVResult, patternDuration)) {MatchResult re = matcherDuration.getMatch();retMap.put("提取出播放时间", re.group(1));String[] split = re.group(1).split(":");String s = split[0];Integer a = Integer.parseInt(s) * 60;String s1 = split[1];Integer a1 = Integer.parseInt(s1) * 60;Integer a2 = Integer.valueOf(split[2].split("\\.")[0]);Integer w = a + a1 + a2;retMap.put("duration", w);retMap.put("开始时间", re.group(2));retMap.put("bitrate", re.group(3));}Pattern patternVideo = compiler.compile(regexVideo, Perl5Compiler.CASE_INSENSITIVE_MASK);PatternMatcher matcherVideo = new Perl5Matcher();if (matcherVideo.contains(processFLVResult, patternVideo)) {MatchResult re = matcherVideo.getMatch();retMap.put("codec", re.group(1).split("\\(")[0].trim());retMap.put("format", re.group(2).split("\\(")[0]);retMap.put("width", re.group(3).split("x")[0]);retMap.put("height", re.group(3).split("x")[1]);}} catch (MalformedPatternException e) {e.printStackTrace();}finally {if (null!=fc){try {fc.close();} catch (IOException e) {e.printStackTrace();}}}}return retMap;}//linux方式下的读取方式 （因为项目是用docker部署的，所以读取的视频文件是在容器内部，所以得用这种方式读取）public static String processFLV(String filePath) {String cut1 = "ffmpeg -i "+ filePath;try {String command = "" + cut1;System.out.println(command);Process process = Runtime.getRuntime().exec(new String[]{"sh","-c",command});InputStream in = process.getErrorStream();BufferedReader br = new BufferedReader(new InputStreamReader(in));String line ;StringBuffer sb1 = new StringBuffer();while ((line = br.readLine()) != null) {sb1.append(line);if(line.contains("fps")){String[] split = line.split(",");for (String d : split) {if(d.contains("fps")){String[] split1 = d.split(" fps");String fps1 = split1[0];}}}continue;}System.out.println(sb1.toString());return sb1.toString();}catch (IOException e) {e.printStackTrace();return null;}}//windows环境下读取方式 public static String processFLVWin(String filePath) {//注意要保留单词之间有空格List commend = new java.util.ArrayList();commend.add("D:\\xbb\\ffmpeg-N-104863-g6cf55b9da2-win64-gpl-shared\\ffmpeg-N-104863-g6cf55b9da2-win64-gpl-shared\\bin\\ffmpeg.exe");//可以设置环境变量从而省去这行commend.add("ffmpeg");commend.add("-i");commend.add(filePath);try {ProcessBuilder builder = new ProcessBuilder();builder.command(commend);builder.redirectErrorStream(true);Process p = builder.start();BufferedReader buf = null;String line = null;buf = new BufferedReader(new InputStreamReader(p.getInputStream()));StringBuffer sb = new StringBuffer();while ((line = buf.readLine()) != null) {System.out.println(line);sb.append(line);if(line.contains("fps")){String[] split = line.split(",");for (String d : split) {if(d.contains("fps")){String[] split1 = d.split(" fps");String fps = split1[0];}}}continue;}int ret = p.waitFor();return sb.toString();} catch (IOException | InterruptedException e) {e.printStackTrace();return null;}}

参考博客：https://www.cnblogs.com/xhy-shine/p/11820341.html