This page describes a proposed update to the minimal list of 15 standard field names in the Vorbis I specification. Please keep discussion confined to the Discussion page (or, better, the <vorbis-dev> mailing list).
After the proposal has been discussed, and accepted or rejected, this page should be deleted.
To determine what field names are being used in the wild, the following resources were analysed:
- Reactor Core proposal
- Carnival of Technology proposal
- Proposals on the XiphWiki VorbisComment page
- OggImporter to Spotlight
- EasyTAG tagging program (routine "ogg_tag.c" in the source code)
- Mp3tag tagging program (post in the Mp3tag Forum)
The analysis is presented as an Excel spreadsheet (note that it contains two sheets, the first of which is the more interesting).
The following modest list of additions to the minimal list in the specification is proposed:
TRACKTOTAL– complements the existing
DISCNUMBER– used if part of a multi-disc album
DISCTOTAL– total number of discs in a multi-disc album
ENCODED-BY– see VorbisComment page
ENCODER– see VorbisComment page
METADATA_BLOCK_PICTURE– see VorbisComment page
SOURCEMEDIA– recommended because two different field names have been proposed
PRODUCTNUMBER– recommended because two different field names have been proposed
The field names
PRODUCTNUMBER could be dropped if Xiph does not wish to prescribe field names. (The alternatives which have also been proposed to store the same information are
SOURCE MEDIUM and
The field name
REMIXER has not been included as its use is covered by the existing
RIGHTS-URI, proposed on the VorbisComment page, has not been included because this is structured metadata. VorbisComments are inherently unstructured and this should be respected.