note 39409 deleted from function.iptcembed by levim
| From: | levim@php.net | Date: | Mon, 28 Apr 2014 14:12:29 +0000 |
| Subject: | note 39409 deleted from function.iptcembed by levim | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-199347@lists.php.net to get a copy of this message | ||
Note Submitter: collord
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Regarding issues with photoshop IPTC... Photoshop actually prefers a different embedded metadata
format, XMP, which is RDF-based. When Photoshop manages metadata via File Info, what you're
actually doing is manipulating RDF in a "photoshop" namespace as well as the standard
Dublin Core (dc) namespace, and a couple others. When a file is written that supports IPTC, the
equivalent fields e.g. copyright, keywords, etc. are serialized into the IPTC block.
So, if one manipulates the IPTC block of a Photoshop-generated image and leaves the XMP block alone,
it's my guess that Photoshop will treat data from the XMP as authoritative.
HTH, jerritt