I have been attempting my own modest implementation of this request. After actually coding it, I ran into a serious problem: writing the XMP sidecar file fails to modify any existing values. This might be purely because of a problem in exiv2: http://dev.exiv2.org/boards/3/topics/1052
I have been attempting my own modest implementation of this request. After actually coding it, I ran into a serious problem: writing the XMP sidecar file fails to modify any existing values. This might be purely because of a problem in exiv2: http:// dev.exiv2. org/boards/ 3/topics/ 1052