[vorbis] using vcut on split ogg files

Beni Cherniavsky cben at techunix.technion.ac.il
Thu Jul 31 10:10:00 PDT 2003



Marc Heckmann wrote on 2003-07-31:

> hi,
>
> I am recording a continuous 24/7 broadcast using ecasound, oggenc and
> cronolog.
>
> because the broadcast is continuous and to not lose any data, I split up
> the recorded stream into a file for every 30 minutes using cronolog
> (http://www.cronolog.org).
>
> so the chain looks like the following:
>
> ecasound | oggenc | cronolog
>
> the problem is the following, because the oggfiles are split, they lack
> a proper header and have become unuseable.
>
Try instead:

  ecasound | cronolog ==> oggenc

You will need to setup ecasound for raw headerless output and oggenc
for corresponding raw input.  The connection from cronolog to oggenc
is more complicated than a pipe - you need to run oggenc repeatedly
for each file cronolog splits.  Then you can delete the wavs.

This means more overhead and temporal space, and the switch between
tracks will sample-precise but not ideal.  Ideally you'd want a
cronolog-like tool with vcut powers built in...


-- 
Beni Cherniavsky <cben at tx.technion.ac.il>

Put a backslash at the evening to continue hacking onto the next day.
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