[Ffmpeg-devel] alsa input / output

Baptiste Coudurier baptiste.coudurier
Tue Mar 20 11:59:26 CET 2007


Hi Luca,

Luca Abeni wrote:
> Hi all,
> 
> I wrote a small AVOutputFormat and AVInputFormat for supporting alsa
> through alsalib. It is not perfect yet, and still has some bugs (A/V
> synchronization might be incorrect because timestamps generation is very
> naive, endianess is not correctly handled, only 16bit samples are
> currently supported, etc...). But it is already usable (I tried to
> capture an avi from video4linux2/alsa, and I had no xruns and audio and
> video look in synch).
> 
> Is anyone interested in this alsa format? If yes, I can send it to the
> list so that interested people can try it, and improve or fix it (in its
> current form, I do not know if it can be submitted for inclusion...)
> 
> Also, just for the fun of it I am thinking about accessing alsa without
> using alsalib (by directly accessing /dev/snd/*). Does anyone know where
> can I find some documentation about the "raw" /dev/snd/* interface?
> 

Any news about this ? Im interested in testing alsa output format from
ffmpeg.

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