IPTC Image metadata
The IPTC defined a set of metadata attributes that can be applied to images, part of a broader standard developed in the early 1990s and known as the IPTC Information Interchange Model (IIM). Embedded IIM image information is often referred to as an "IPTC header". The Extensible Metadata Platform (XMP) has largely superseded IIM’s file structure, but the IIM attributes are defined in the IPTC Core schema for XMP and most image manipulation programs keep the XMP and non-XMP IPTC attributes synchronized. Because of its nearly universal acceptance among photographers — even amateurs — this is by far IPTC’s most widely used standard.
http://en.wikipedia.org/wiki/IPTC
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big thanks
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The default file now removes doubled extensions. If anyone is searching for reasons why their folder with a jpg and mp3 of the same name doesn’t work this is it invert the fix suggested a few posts above. All my code does is move the values around (from iptcparse to an array, to another array, to modx’s parseChunk). It could be your PHP install doesn’t support them? Or they need to be turned on in your php.ini? Although - since I assume you write a lot in German already - you have probably already done all that.
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