I'm searching for a way to simply update the EXIF (or other metadata) of an existing JPG with copyright information. I've found references to this approach:
image["EXIF:Copyright"] = "Acme, Inc. 2011"
...and the following call successfully returns the stored value:
image.get_exif_by_entry("Copyright")
...but that metadata doesn't appear to be saved with the image.
Any clues are greatly appreciated.
Joey
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