[Libav-user] setting raw alsa pkt size

Nicolas George george at nsup.org
Wed May 13 12:40:15 CEST 2015

Le quartidi 24 floréal, an CCXXIII, Carl Eugen Hoyos a écrit :
> Which means that A/V sync is impossible to keep, or 
> do I miss something?

Why do you think that? Whether the captures happen in separate threads or
not, A-V sync is made difficult by the latency in each part of the system,
especially the buffer of the audio device, but the lavd demuxers account for
that and provide accurate timestamps. As long as the timestamps are based on
the same clock (which they are in this particular instance), A-V sync is

> > but for audio I get a whopping 939834256 which 
> > translates into 939 mb which is unacceptable for me.
> 939MB per hour? Or per day?
> This is the maximum alsa buffer size on your system.

daggs: how do you measure that frame size? You should not need to.


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