I seem to recall you could do this with Exiftool, but I've forgotten where the reference was (it may have been in a thread in this forum).
Anyone care to point me in the right direction?
Carver
Adding -m (http://www.exiftool.org/exiftool_pod.html#m) to the command line will allow exiftool to ignore minor warnings. Actual errors will still be skipped.
Nevermind, misread the question.
You can make any tag writable with the appropriate definition in a config file as long as the metadata group supports writing. See the sample config file (https://exiftool.org/config.html) for more information.
- Phil