[Vorbis-dev] libwrit sync questions

[Conrad Parker]

Hi Fabian,

you should use a CMML track with libannodex -- these have been pretty
thoroughly tested in real applications and support full
internationalization and correct Ogg synchronization.

http://www.annodex.net/ for more info.

Conrad.

On Mon, Oct 11, 2004 at 01:25:21PM +0100, Fabian Wauthier wrote:
> Hi list,
> 
> I plan to write a tool that incorporates a sequence of three bytes at specific
> timeoffsets in an ogg vorbis file. The bitstrings encode commands for a Kodak
> slide projector, which upon playback of the file should be sent to the serial
> port where the projector receives it. Playing the audio file should effectively
> run a slideshow where all the music comes from the audio part, and the commands
> for the projector come from some other encoding in the ogg file.
> 
> For that pupose the libwrit caught my attention, as it seems to be able to place
> song lyrics in audio files. First of all, what is your opinion on the
> workability of this. Upon playback, is the bitstring still going to be more or
> less in sync with the audio output? Or is there to much buffering going on? Can
> I place the bistrings with packet precision?
> 
> Also, I am not sure how useable the libwrit is yet. Perhaps there are better
> approaches (e.i. a new bitstream, with pretend audio packets; illegal
> ("corrupted") audiopackets in a normal audio bistream, that still get passed to
> userland; perhaps getting synchronisation through some completely different
> means). Any thoughts an pointers appreciated,
> 
> best regards,
> Fabian Wauthier
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