Vorbis comment
Metadata container for Ogg file formats / From Wikipedia, the free encyclopedia
A Vorbis comment is a metadata container used in the Vorbis, FLAC, Theora, Speex and Opus file formats.[1] It allows information such as the title, artist, album, track number or other information about the file to be added to the file itself. However, as the official Ogg Vorbis documentation notes, “[the comment header] is meant for short, text comments, not arbitrary metadata; arbitrary metadata belongs in a separate logical bitstream (usually an XML stream type) that provides greater structure and machine parseability.” Instead, the intended function of Vorbis comments is to approximate the kind of information that might be hand-inked onto a blank faced CD-R or CD-RW: a few lines of notes briefly detailing the content.[2]