Creates a new, empty footer instance.
Static ReadonlyfileThe footer file identifier "3DI".
Static ReadonlysizeFooter is always 10 bytes (same as header).
Render the footer from an existing header. The rendered bytes are identical to the header except bytes 0-2 are "3DI".
ID3v2 footer (v2.4 only).
The footer is identical to the header except the file identifier is "3DI" instead of "ID3". It allows a parser to find the tag when scanning from the end of a file.