[FFmpeg-devel] [PATCH] ALSA for libavdevice

Nicolas George nicolas.george
Wed Dec 10 23:00:03 CET 2008

Le decadi 20 frimaire, an CCXVII, Michael Niedermayer a ?crit?:
> timestamps must represent the system clock at the first sound sample.
> calling any get "system time" function cannot achive this unless you disable
> all interrupts and anything else that might execute in the background between
> the sound recording and you checking the time.
> Thus in practice either
> A. the audio API provides the time 
> B. you are in some priviledged code that can really stop everything
> C. you will not be able to use the time as is as pts

Ok, I get it.

There seems to be an API for timestamps in ALSA, though I never used it. I
will give it a thorough look soon.


  Nicolas George
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