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metadata

Data about a digital image that explains, describes or locates the image and is embedded in the image file, but is not data forming the image itself. The information includes such items as camera model, lens type, exposure settings and more. Some metadata can be edited, permitting the addition of, say, copyright information.

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metadata

Additional data about a file or how it should be processed.
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metadata

Structured information describing the file, i.e. data about the file data, making it easier to use the file. In digital video, this information may include title, director, actors, content summary, recording length, as well as file name, status.
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