[求助]用VDM打开OGM文件添加字幕时出错

我试验给OGM文件增加字幕，用VDM打开OGM文件，到streams中打字幕文件给滤出来，然后小小修改一番后再加进去，但系统报错，
说SRT.Some errors were found while parsing the file.
让查看报告，里面说：
No apparent problem have been encountered while parsing the stream.

遇到这种情况要怎么办？

把它存成MKV格式。