[ogg-dev] [Schrodinger-devel] ogg dirac granulepos in oggz tools

Silvia Pfeiffer silviapfeiffer1 at gmail.com
Sun Nov 16 15:22:30 PST 2008

On Mon, Nov 17, 2008 at 10:14 AM, Ivo Emanuel Gonçalves
<justivo at gmail.com> wrote:
> On 11/14/08, David Flynn <davidf+nntp at woaf.net> wrote:
>> Correct; there is no metadata handling capability in the current
>> mapping spec.
> I'd suggest at some point to look into separate stream solution for
> metadata, perhaps M3F [1].
> -Ivo
> [1] http://wiki.xiph.org/index.php/M3F

Yeah - there's a whole swag of different types of related text that
needs to be regarded, not least of which are:

    * CC: closed captions (for the deaf)
    * SUB: subtitles
    * TAD: textual audio descriptions (for the blind)
    * KTV: karaoke
    * TIK: ticker text
    * AR: active regions
    * NB: metadata & semantic annotations
    * TRX: transcripts / scripts
    * LRC: lyrics
    * LIN: linguistic markup
    * CUE: cue points, DVD style chapter markers and similar
navigational landmarks

As for non-time-aligned metadata, vorbiscomment has so far served us
well, not least because it's extensible. There is also XMP, and a
whole swag of other metadata schemes. Plus, the W3C is currently
investigating a new ontology for video/audio metadata. This may be a
good extension for vorbiscomment once finished.


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