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ExifTool is a free and open-source software program for reading, writing, and manipulating image, audio, video, and PDF metadata.As such, ExifTool classes as a tag editor.It is platform independent, available as both a Perl library (Image::ExifTool) and a command-line application.
Exchangeable image file format (officially Exif, according to JEIDA/JEITA/CIPA specifications) [5] is a standard that specifies formats for images, sound, and ancillary tags used by digital cameras (including smartphones), scanners and other systems handling image and sound files recorded by digital cameras.
The XMP Toolkit implements metadata handling in two libraries: XMPCore for creation and manipulation of metadata that follows the XMP Data Model. XMPFiles for embedding serialized metadata in files, and for retrieving embedded metadata. Adobe provides the XMP Toolkit free of charge under a BSD license.
Most common types of computer files can embed metadata, including documents, (e.g. Microsoft Office files, OpenDocument files, PDF) images, (e.g. JPEG, PNG) Video files, (e.g. AVI, MP4) and audio files. (e.g. WAV, MP3) Metadata may be added to files by users, but some metadata is often automatically added to files by authoring applications or ...
As with descriptive metadata, administrative metadata may be internally encoded or external to the METS document. File Section fileSec: Lists all files containing content which comprise the electronic versions of the digital object. file elements may be grouped within fileGrp elements to subdivide files by object version. Although this section ...
ID3 is a de facto standard for metadata in MP3 files; no standardization body was involved in its creation nor has such an organization given it a formal approval status. [1] It competes with the APE tag in this area. There are two unrelated versions of ID3: ID3v1 and ID3v2. In ID3v1, the metadata is stored in a 128-byte segment at the end of ...
It is, however, the best way for a program to check if the file it has been told to process is of the correct format: while the file's name or metadata may be altered independently of its content, failing a well-designed magic number test is a pretty sure sign that the file is either corrupt or of the wrong type.
Metadata elements grouped into sets designed for a specific purpose, e.g., for a specific domain or a particular type of information resource, are called metadata schemas. For every element the name and the semantics (the meaning of the element) are specified.