关于java 上传的音频或视频文件获取时长及视频封面

1.引入依赖,由于在Github上面的maven依赖，下载不下来，需要手动下载jar，然后安装到本地的maven仓库

      
      
          it.sauronsoftware
          jave
          1.0.2
      

2.安装jar到本地

mvn install:install-file -Dfile=C:\Users\Administrator\Downloads\jave-1.0.2.jar -DgroupId=it.sauronsoftware -DartifactId=jave -Dversion=1.0.2 -Dpackaging=jar

3.进行获取视频的时长

      Encoder encoder = new Encoder();
      MultimediaInfo m = encoder.getInfo(targetFile);
      long ms = m.getDuration();

      int ss = 1000;
      int mi = ss * 60;
      int hh = mi * 60;
      int dd = hh * 24;

      long day = ms / dd;
       long hour = (ms - day * dd) / hh;
      long minute = (ms - day * dd - hour * hh) / mi;
      long second = (ms - day * dd - hour * hh - minute * mi) / ss;

      String strHour = hour < 10 ? "0" + hour : "" + hour;//小时
      String strMinute = minute < 10 ? "0" + minute : "" + minute;//分钟
      String strSecond = second < 10 ? "0" + second : "" + second;//秒

     if (strHour.equals("00")) {
         return strMinute + ":" + strSecond;
     } else {
        return strHour + ":" + strMinute + ":" + strSecond;
     }

4.VideoUtil(摘录)

@Slf4j
@Component
public class VideoUtil {
 
    /**
     * @Description: 获取视频时长(时分秒)
     * @author: Hanweihu
     * @date: 2019/7/30 8:35
     * @params: [file]
     * @return: java.lang.String
     */
    public String ReadVideoTimeMs(MultipartFile file) {
        Encoder encoder = new Encoder();
        long ms = 0;
        try {
            // 获取文件类型
            String fileName = file.getContentType();
            // 获取文件后缀
            String pref = fileName.indexOf("/") != -1 ? fileName.substring(fileName.lastIndexOf("/") + 1, fileName.length()) : null;
            String prefix = "." + pref;
            // 用uuid作为文件名，防止生成的临时文件重复
            final File excelFile = File.createTempFile(UUID.randomUUID().toString().replace("-", ""), prefix);
            // MultipartFile to File
            file.transferTo(excelFile);
            MultimediaInfo m = encoder.getInfo(excelFile);
            ms = m.getDuration();
            //程序结束时，删除临时文件
            VideoUtil.deleteFile(excelFile);
        } catch (Exception e) {
            e.printStackTrace();
        }
        int ss = 1000;
        int mi = ss * 60;
        int hh = mi * 60;
        int dd = hh * 24;
 
        long day = ms / dd;
        long hour = (ms - day * dd) / hh;
        long minute = (ms - day * dd - hour * hh) / mi;
        long second = (ms - day * dd - hour * hh - minute * mi) / ss;
 
        String strHour = hour < 10 ? "0" + hour : "" + hour;//小时
        String strMinute = minute < 10 ? "0" + minute : "" + minute;//分钟
        String strSecond = second < 10 ? "0" + second : "" + second;//秒
        if (strHour.equals("00")) {
            return strMinute + ":" + strSecond;
        } else {
            return strHour + ":" + strMinute + ":" + strSecond;
        }
    }
 
    /**
     * @Description: 删除文件
     * @author: Hanweihu
     * @date: 2019/7/30 8:35
     * @params: [files]
     * @return: void
     */
    private static void deleteFile(File... files) {
        for (File file : files) {
            if (file.exists()) {
                file.delete();
            }
        }
    }
}

5.图片获取 宽高

         //获取视频的宽高

        BufferedImage bufferedImage = ImageIO.read(file.getInputStream());
        if (bufferedImage!=null){
           int width = bufferedImage.getWidth();
           int height = bufferedImage.getHeight();
           map.put("imageWidth",width);
           map.put("imageHeight",height);
         }

6.获取视频封面

public static String getTempPath(String tempPath, File file2, Map map) {

        long currentTimeMillis = System.currentTimeMillis();

        String[] split = tempPath.split("/");
        String path="";

        for (String s : split) {
            if (!s.equals(split[split.length-1])){
                path+=s+"/";
            }
        }
        path+=currentTimeMillis+".jpg";

        File targetFile = new File(path);
        if (!targetFile.getParentFile().exists()) {
            targetFile.getParentFile().mkdirs();
        }
        try {
            if (file2.exists()) {
                FFmpegFrameGrabber ff = new FFmpegFrameGrabber(file2);
                ff.start();
                int ftp = ff.getLengthInFrames();
                int flag = 0;
                Frame frame = null;
                while (flag <= ftp) {
                    //获取帧
                    frame = ff.grabImage();
                    //过滤前3帧，避免出现全黑图片
                    if ((flag > 3) && (frame != null)) {
                        break;
                    }
                    flag++;
                }

                ImageIO.write(FrameToBufferedImage(frame), "jpg", targetFile);

                ff.close();
                ff.stop();

                System.out.println(path);

                map.put("snapshoot",path);

            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    private static RenderedImage FrameToBufferedImage(Frame frame) {
        //创建BufferedImage对象
        Java2DFrameConverter converter = new Java2DFrameConverter();
        BufferedImage bufferedImage = converter.getBufferedImage(frame);
        return bufferedImage;
    }