Comment Springboot implémente les fonctions de téléchargement et de compression vidéo

public AjaxResult videoUploadFile(MultipartFile file){
  try {
    if(null == file || file.isEmpty()){
      return AjaxResult.error("文件为空");
    }
    String ossFilePrefix = StringUtils.genUUID();
    String fileName = ossFilePrefix +"-"+ file.getOriginalFilename();
    String fileurl = AliOssUtils.videoUploadFile(file,fileName);
    AjaxResult ajax = AjaxResult.success();
    ajax.put("fileName", "after_"+fileName);
    ajax.put("url", fileurl);
    return ajax;
  } catch (Exception e) {
    return AjaxResult.error(e.getMessage());
  }
}

public static final String uploadVideo(String baseDir, MultipartFile file, String fileName) throws FileSizeLimitExceededException, IOException {
    File desc = getAbsoluteFile(baseDir, fileName);
    file.transferTo(desc);
    String pathFileName = getPathFileName(baseDir, fileName);
    return pathFileName;
}

public static  boolean toCompressFile(String convertFile,String targetFile){
    try{
        /**将视频压缩为 每秒15帧 平均码率600k 画面的宽与高 为1280*720*/
        String cutCmd="ffmpeg -i " + convertFile + " -r 15 -b:v 600k  -s 1280x720 "+ targetFile;
        log.info("cutCmd: " + cutCmd);
        runCmd(cutCmd);
        log.info("文件："+convertFile+" 视屏压缩完成");
    }catch(Exception e){
        e.printStackTrace();
        log.info("压缩文件出现异常："+e.getMessage());
        return false;
    }
    return true;
}

private static String getFileUrl(String path) throws IOException {
    File file = new File(path);
    FileInputStream fileInputStream = new FileInputStream(file);
    MultipartFile multipartFile1 = new MockMultipartFile(file.getName(), file.getName(), ContentType.APPLICATION_OCTET_STREAM.toString(), fileInputStream);
    uploadFile(multipartFile1, file.getName());
    String url = getUrl(file.getName());
    return url;
}