Mimetype of first cover art in the tag of the file Placeholderīits per sample (available only for some audio formats)ĭescription of first cover art in the tag of the file Technical information fields begin with an underscore %_ are read-only and may also be used in the File List, format strings, filters, and export configurations, but not in the Tag Panel. You can reference any supported field which is, e.g., listed in the extended tags dialog as FIELDNAME via a placeholder %fieldname%.
Mp3tag supports flexible tagging, which means that the names of the tag fields are not fixed. You need to put the single quote around these reserved characters if you want to use them unparsed. If you want to output this character please mask it with an extra one ''. This will output the contained string and ignore all reserved characters. An example use case is creating disc subfolders: results in CD1\ if DISCNUMBER is 1 or an empty string if it’s not filled.
The contents of brackets are displayed only if at least one of the placeholders used inside the brackets has been found. If you experience some unexpected behavior when using format strings, check if some of the rules listed below apply. Some characters have special functionality in generating format strings and need to be treated with extra care. Generating format strings can be combined with scripting functions. Generating format strings are used to create new strings, e.g., file names when renaming, field contents when formatting tag fields, data when exporting, but also file names for playlists or cover images that are parameterized with tag contents. Matching format strings are used for simple pattern matching of existing strings, e.g., file names to import tags from or lines in a text file that describe tag contents to be imported. A format string is built of either standard text (e.g., Music), placeholders (such as %artist%, %title%, …), or backslash characters \ that usually denote directory structures (optionally starting with a drive specifier e.g., D:\).įormat strings are used in two ways in Mp3tag, matching format strings and generating format strings. Mp3tag uses format strings in various of its features to describe the structure of file names and imported data.
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