![]() Tag Nameįace information tags written by the Apple iPhone 5 inside the mwg-rs RegionExtensions. These tags belong to the ExifTool XMP-album family 1 group. (newer version of XML raw processing settings) These tags belong to the ExifTool XMP-acdsee family 1 group. Your applications mumble to themselves instead of speaking out for the rest of the world to hear.) (A note to software developers: Re-inventing your own private tags instead of using the equivalent tags in standard XMP namespaces defeats one of the most valuable features of metadata: interoperability. These tags belong to the ExifTool XMP-aas family 1 group. NamespaceĪpple Adjustment Settings used by iPhone/iPad. The tables below list tags from the official XMP specification (with an underlined Namespace in the HTML version of this documentation), as well as extensions from various other sources. For example, the pdfx namespace doesn't have a predefined set of tag names because it is used to store application-defined PDF information, so although this information will be extracted, it is only writable if the corresponding user-defined tags have been created. See the Field Name section of the Structured Information documentation for more details.ĮxifTool will extract XMP information even if it is not listed in these tables, but other tags are not writable unless added as user-defined tags in the ExifTool config file. Field names are very similar to tag names, except they are used to identify fields inside structures instead of stand-alone tags. When deciding on which tags to add to an image, using standard schemas such as dc, xmp, iptcCore and iptcExt is recommended if possible.įor structures, the heading of the first column is Field Name. However, any namespace may be written by specifying a family 1 group name for the tag, eg) XMP-exif:Contrast or XMP-crs:Contrast. In cases where a tag name exists in more than one namespace, less common namespaces are avoided when writing. Note that a few of the longer namespace prefixes given below have been shortened for convenience (since the family 1 group names are derived from these by adding a leading "XMP-"). The XMP tags are organized according to schema Namespace in the following tables. When reading, "x-default" is not specified. The "x-default" language code may be specified when writing to preserve other existing languages (eg. (See for the RFC 3066 specification.) A lang-alt tag with no language code accesses the "x-default" language, but causes other languages for this tag to be deleted when writing. Individual languages for lang-alt tags are accessed by suffixing the tag name with a '-', followed by an RFC 3066 language code (eg. When writing, the Struct option has no effect, and both structured and flattened tags may be written. The Struct option may be disabled by setting Struct to 0 via the API or with -struct on the command line to copy only flattened tags, or enabled by setting Struct to 1 via the API or with -struct on the command line to copy only as structures. When copying, by default both structured and flattened tags are available, but the flattened tags are considered "unsafe" so they they aren't copied unless specified explicitly. Otherwise the corresponding Flattened tags, indicated by an underline ( _) after the Writable type, are extracted. ![]() When reading, struct tags are extracted only if the Struct (-struct) option is used. The Writable column specifies the information format: string is an unformatted string, integer is a string of digits (possibly beginning with a '+' or '-'), real is a floating point number, rational is entered as a floating point number but stored as two integer strings separated by a '/' character, date is a date/time string entered in the format "YYYY:mm:dd HH:MM:SS", boolean is either "True" or "False", struct indicates a structured tag, and lang-alt is a tag that supports alternate languages. Tags with different ID's are mentioned in the Notes column of the HTML version of this document.Īll XMP information is stored as character strings. The XMP Tag ID's aren't listed because in most cases they are identical to the Tag Name (aside from differences in case). Information in this format can be embedded in many different image file types including JPG, JP2, TIFF, GIF, EPS, PDF, PSD, IND, INX, PNG, DJVU, SVG, PGF, MIFF, XCF, CRW, DNG and a variety of proprietary TIFF-based RAW images, as well as MOV, AVI, ASF, WMV, FLV, SWF and MP4 videos, and WMA and audio formats supporting ID3v2 information. XMP stands for "Extensible Metadata Platform", an XML/RDF-based metadata format which is being pushed by Adobe.
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