note 39409 added to function.iptcembed
| From: | collord at rn2 dot php dot net | Date: | Tue, 27 Jan 2004 18:20:56 +0000 |
| Subject: | note 39409 added to function.iptcembed | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-64278@lists.php.net to get a copy of this message | ||
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
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