Re: [Ekiga-devel-list] Another try at gstreamer in ekiga

[Yannick <sevmek free fr>]

Le vendredi 22 février 2013 à 09:32 +0100, Eugen Dedu a écrit :
> On 22/02/13 09:31, Julien Puydt wrote:
> > Le 22/02/2013 09:23, Craig Southeren a écrit :
> > > After refreshing my memory by looking at the code, you will need to
> > > implement timing on the write side as well, if you are using audio with
> > > a jitter buffer.
> > >
> > > Without this, you will quickly drain the jitter buffer and audio will
> > > not work.
> > >
> > > If you are connecting to an OpalStream, there are member functions that
> > > will enable timing sychronization. I'd need to know more about how you
> > > are connecting to Opal to offer more specific information. Are you using
> > > the gstreamer code in PTLib or have you written your own?
> >
> > I have written my own, which dates back to before the one in ptlib as
> > far as I know.
>
> Isn't it better to use ptlib's own gstreamer implementation?

As a side note, talking about timing, I remember Mathias back in the
days talking about implementing lip-sync. AFAIK the issue you're dealing
with here could maybe provide grounds to this feature (if not
implemented yet in OPAL/Ekiga ?).

A Cisco's paper about lip-sync issues and solutions :
http://www.ciscopress.com/articles/article.asp?p=705533

Best regards,
Yannick