[Asterisk-video] H324M AMR audio working!!!

[CA DM]

It's normal, Amin: for 3G calls you can't exceed 
51200 bit/s for the video stream and 12200 bit/s 
for the audio stream, as stated in the H324M draft(s).
So it will be better to keep both streams a 
little bit under the maximum allowed to be safe.

Cesare

At 15.48 01/03/2007, you wrote:
>The problem with bridging to SIP is bigger than you think
>
>My H324m stack is directly implemented into 
>chan_zap, so I can place 3G call with 
>dial(zap/gv1/number) or I receive video call from a cellphone in H263 mode.
>Also since I wrote codec_amr and format_amr, i 
>gave chan_zap the amr capability so the call is transcoded.
>Currently when I bridge to SIP it works but 
>there is a BIG problem, it's the FPS that the softphone is sending.
>Basically, if the H263 video coded by the 
>softphone is about 50kb/s its fine. but if it's 
>bigger (which is usually the case) then you loose frame.
>Also, the softphone is not usually capable of 
>sending a SIP info as Video Fast Update asking 
>the softphone to reencode an I-frame.
>That's why I'm currenty working on the transcoding of H263 <> H263.
>
>
>--
>Amin Ramtin
>
>
>
>
>
>
>----------
>
> > Subject: Re: [Asterisk-video] H324M AMR audio working!!!
> > From: mbrancaleoni at espia.it
> > To: asterisk-video at lists.digium.com
> > Date: Thu, 1 Mar 2007 14:39:23 +0100
> >
> > Hi,
> >
> > On Thu, 2007-03-01 at 13:46 +0100, Sergio Garcia Murillo wrote:
> > > From: "matteo brancaleoni" <mbrancaleoni at espia.it>
> > > Sent: Thursday, March 01, 2007 1:06 PM
> > > > > > > asterisk: symbol lookup error:
> > > /usr/lib/asterisk/modules/app_h324m.so:
> > > > > > > undefined symbol: TIFFReverseBits
> > > I have updated a new verson that should solve the problem also.
> > > Please try it id you can to make sure I haven't broke anything..
> >
> > Yes, seems ok :)
> > thanks a lot :)
> >
> > btw... the audio is a bit "broken", I mean that
> > has some interruptions in it.
> > But maybe is the encoding... I'll check.
> >
> > When switching between 2 videos, the audio always
> > arrives immediately and the video a bit later.
> > But maybe this 3G related :)
> >
> > really good work.
> > Now we need only an amr codec and we can bridge sip :)
> >
> > Matteo
> >
> > --
> > Matteo Brancaleoni
> > R&D Director
> > Tel :+39.02.70633354
> > Voip :sip:matteo at sip.voismart.it
> >
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>
>
>----------
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