Q:

Remove exiftool traces from file

If I set some tag with exiftool e.g.
exiftool UserComment="test" video.mp4

I can then remove it with
exiftool UserComment= video.mp4

However, exiftool sets an additional tag ExifToolVersion which I cannot delete with
exiftool -ExifToolVersion= video.mp4

because
Warning: Sorry, ExifToolVersion is not writable

How can I remove all traces of exiftool from the file? I need to keep other meta data tags untouched.

A:

ExifToolVersion is not stored in the file.  This is only information returned by ExifTool.  Use the -G1 option to see the group name for each tag.  Tags with a group name of "ExifTool" are generated internally.  Other "ExifTool" tags are Error and Warning.  For a complete list, see the Extra Tags documentation

