[linux-dvb] Re: Audio sync

[Ralph Metzler <rjkm@metzlerbros.de>]

=?ISO-8859-1?Q?R=E9gis?= Bossut writes:
 > The question:
 > Which clock does the ARM use for audio/video synchronization ? I guess
 > it's DTS if present, PCR if not. But I'm not a guru...

During live viewing the ARM uses the PCR to set its own system clock
(STC). The PTSs (DTSs are dropped AFAIK) of the streams are then used
for synchronization.
During playback only the PTSs are used. The STC is set according to
the first PTS. It also is reset if there are large PTS gaps.


Ralph


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