.MTS Videos taken with an incorrect UTC offset in DateTimeOriginal

[Exifdude]

I have .MTS videos that were taken on an incorrectly configured camcorder.  There was a DST option that was not selected when they were recorded.  I can think of three solutions for this.  To correct this I can think of the below three solutions.  Need assistance with the commands for them.  Thanks in advance.

1. Add the DST flag to DateTimeOriginal, this is the normal behavior the camcorder exhibits when that option is selected.
Example: DateTimeOriginal                : 2018:05:24 10:30:31-05:00 DST
2. Change the UTC offset from -05:00 to -04:00 on DateTimeOriginal.
3. Remove the UTC offset entirely like it shows on a jpg file.

[Phil Harvey]

ExifTool does not have the ability to write MTS files.

- Phil

[Exifdude]

Feature Request! Thanks Phil 

[Phil Harvey]

I hate to be the bearer of bad news, but this is not going to happen.  Read here for more information, but basically the problem is that MTS files don't support metadata, and I would have to edit the video stream to do this.

- Phil