[ogg-dev] handling multitrack Ogg

[Frank Barchard]

On Mac the ffmpegx tool supports 2 audio tracks.  Maybe worth checking out?

http://www.ffmpegx.com/index.html

   - Creates AVI or MPG files with two audio tracks.
   - *Supports subtitles* in VobSub, SubRip, MicroDVD, SubViewer, Sami,
   VPlayer, RT, SSA, AQTitle, JACOsub and MPsubt formats


On Tue, Feb 2, 2010 at 5:40 PM, Silvia Pfeiffer
<silvia at silvia-pfeiffer.de>wrote:

> On Wed, Feb 3, 2010 at 11:21 AM, Chris Double <chris.double at double.co.nz>
> wrote:
> > Excerpts from Frank Barchard's message of Wed Feb 03 13:11:15 +1300 2010:
> >>
> >> Yes, and its good to learn from DVD's too.
>
> DVD is a subpart of MPEG: http://www.mpucoder.com/DVD/vobov.html,
> http://dvd.sourceforge.net/dvdinfo/dvdmpeg.html .
> Uses the same functionality for tracks, iiuc.
>
> > It might be useful to look at the Matroska container format too. It
> handle's multiple tracks iirc.
>
> Matroska is interesting, see
> http://www.matroska.org/technical/specs/index.html#Track .
>
> It has a TrackNumber and a TrackUID (the latter probably maps well
> onto Ogg serialnumbers) and a Name (human-readable).
>
> Further for display order it has a TrackOverlay element, which
> specifies a track to be an overlay onto another one.
>
> Cheers,
> Silvia.
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