I want to remove face tags from a file. I tried the command "exiftool -xmp-region:all= <file.jpg>" but exiftool reports 0 image files updated. What am I missing? Thanks.
"xmp-region:all" isn't a tag group.
Try
exiftool -XMP-mwg-rs:all= -XMP-MP:all= -XMP-acdsee-rs:all= -XMP-iptcExt:ImageRegion*= /path/to/files/
This removes, in order, MWG regions, Microsoft regions, ACDSee regions, and IPTC Extension regions.
Thanks, StarGeek, that did the trick.