Vorbis Comment: Difference between revisions

Latest revision as of 08:38, 17 September 2022

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Vorbis Comment is a metadata format, similar to ID3 and APE tags, specified by Xiph.org initially for use with (Ogg) Vorbis, and since then also used for, notably, FLAC and Opus.

IETF Standard Draft for FLAC defines it this way:

  A Vorbis comment metadata block contains human-readable information
  coded in UTF-8.  The name Vorbis comment points to the fact that the
  Vorbis codec stores such metadata in almost the same way.  A Vorbis
  comment metadata block consists of a vendor string optionally
  followed by a number of fields, which are pairs of field names and
  field contents.  Many users refer to these fields as FLAC tags or
  simply as tags.

It is a relatively simple format that allows the user to specify arbitrary fieldname/value pairs, using UTF-8 Unicode as the character encoding.

To avoid incompatibilities between tags, some standard fieldnames are suggested by the Vorbis Comment specification (TITLE, VERSION, ALBUM, ARTIST, TRACKNUMBER, DATE, etc.). Every fieldname is allowed and there is no obligatory format for values. Same fieldnames can be used several times. In contrast to ID3 it is a it's quite free of regulations.

Several unofficial efforts have been made as proposals and recommendations for Vorbis Comment specification.

Two such documents are available on Web. First one is called Ogg Vorbis Comment Field Recommendations and second one is called Proposals for extending Ogg Vorbis comments.

Used by

External links

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 {{stub}}
-'''Vorbis Comment''' is a [[metadata]] format, similar to [[ID3]] and [[APE tags]], specified by Xiph.org for use with (Ogg) [[Vorbis]] and [[Free Lossless Audio Codec|FLAC]].
+'''Vorbis Comment''' is a [[metadata]] format, similar to [[ID3]] and [[APE tags]], specified by Xiph.org initially for use with (Ogg) [[Vorbis]], and since then also used for, notably, [[Free Lossless Audio Codec|FLAC]] and [[Opus]].
+IETF Standard Draft for FLAC defines it this way:
+   A Vorbis comment metadata block contains human-readable information
+   coded in UTF-8.  The name Vorbis comment points to the fact that the
+   Vorbis codec stores such metadata in almost the same way.  A Vorbis
+   comment metadata block consists of a vendor string optionally
+   followed by a number of fields, which are pairs of field names and
+   field contents.  Many users refer to these fields as FLAC tags or
+   simply as tags.
 It is a relatively simple format that allows the user to specify arbitrary fieldname/value pairs, using '''UTF-8''' Unicode as the character encoding.
-To avoid incompatibilities between tags some standard fieldnames are suggested by the Vorbis Comment specification (TITLE, VERSION, ALBUM, ARTIST, TRACKNUMBER, etc.). Every fieldname is allowed and there is no obligatory format for values. One Fieldnames can be used several times. In contrast to [[ID3]] it is a it's quite free of regulations.
+To avoid incompatibilities between tags, some standard fieldnames are suggested by the Vorbis Comment specification (TITLE, VERSION, ALBUM, ARTIST, TRACKNUMBER, DATE, etc.).
+Every fieldname is allowed and there is no obligatory format for values. Same fieldnames can be used several times.
+In contrast to [[ID3]] it is a it's quite free of regulations.
+Several unofficial efforts have been made as proposals and recommendations for Vorbis Comment specification.
-Several unofficial efforts have been made to establish a kind of standard for Vorbis Comment specification. More information [http://reactor-core.org/ogg-tagging.html here]
+Two such documents are available on Web. First one is called [http://web.archive.org/web/20040401200215/reactor-core.org/ogg-tag-recommendations.html Ogg Vorbis Comment Field Recommendations] and second one is called [http://web.archive.org/web/20101021085402/http://reallylongword.org/vorbiscomment/ Proposals for extending Ogg Vorbis comments].
 == Used by ==
 * (Ogg) [[Vorbis]]
 * [[Free Lossless Audio Codec]] (FLAC)
+* [[Opus]]
 * [[Speex]]
+* [[Theora]]
 == External links ==
-* [http://www.xiph.org/vorbis/doc/v-comment.html official specifications]
+* [http://www.xiph.org/vorbis/doc/v-comment.html Oficial specifications]
+* [https://datatracker.ietf.org/doc/html/draft-ietf-cellar-flac-04#section-9.6 Free Lossless Audio Codec, draft-ietf-cellar-flac-04, 21 August 2022]
+* [http://web.archive.org/web/20050410021858/http://www.vorbis.com/ot/20030303.html#id2726753 Goals and non-Goals of Vorbis Comments]
 [[Category:Metadata]]