使用ExifTool覆盖现有标签

Question

我目前正在使用以下代码通过exiftool将标签添加到图像。 效果很好。但是当图像中已经有标签时，它们不会被替换。

                ProcessStartInfo startInfo = new ProcessStartInfo();
                startInfo.FileName = "exiftool.exe";
                startInfo.Arguments = "-m -stay_open True -@ " + tempDirectory + "\\commands.txt";
                startInfo.RedirectStandardOutput = true;
                startInfo.RedirectStandardError = true;
                startInfo.UseShellExecute = false;
                startInfo.CreateNoWindow = true;

                Process processTemp = new Process();
                processTemp.StartInfo = startInfo;
                processTemp.EnableRaisingEvents = true;
                processTemp.Start();
                return true;

将命令写入由exiftool监视的文本文件

 writer = new FileInfo(tempDirectory + "commands.txt").AppendText();

  writer.WriteLine("-subject=" + tempstring);
                            writer.WriteLine(outdir + "\\" + x.Value.ElementAt(0) + "\\" + Path.GetFileName(x.Key));
                            writer.WriteLine("-overwrite_original");
                            if (counter != files.Count)
                            {
                                writer.WriteLine("-execute");
                            }
                            else
                            {
                                writer.WriteLine("-stay_open");
                                writer.WriteLine("False");
                            }