Note: the behaviour seems to be different if the tag is already present in the image. If not present yet, it will be written with an empty value as shown in the script above. If already present, its value is simply not overwritten.
Note: the behaviour seems to be different if the tag is already present in the image. If not present yet, it will be written with an empty value as shown in the script above. If already present, its value is simply not overwritten.