public FileImageRecorder(File base_path,int starting_seq,String prefix,RecordingSuccessCallback callback){
  super(base_path,starting_seq,prefix,callback);
  this.activated=false;
  executor=Executors.newFixedThreadPool(MAX_SAVING_THREADS);
}

public FileImageRecorder ( File base_path , int starting_seq , String prefix , RecordingSuccessCallback callback ) { super ( base_path , starting_seq , prefix , callback ) ; this . activated = false ; executor = Executors . newFixedThreadPool ( MAX_SAVING_THREADS ) ; }
creates image recorder . it will record files in given directory with names like image - 0010 . png
