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

[Ramtin Amin]

> From: sergio.garcia at fontventa.com> To: asterisk-video at lists.digium.com> Subject: Re: [Asterisk-video] H324M AMR audio working!!!> Date: Thu, 1 Mar 2007 16:58:56 +0100> > Hi Ratmin, it's good to see you're alive and well...> > > From: Ramtin Amin> > Sent: Thursday, March 01, 2007 3:48 PM> >> > 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.> > Good, and what it's the difference bridging the call to a sip channel?> Beside of that sepparating the stack from zap allows the use of other kind> of channels, like misdn as matteo did..> > > Also since I wrote codec_amr and format_amr, i gave chan_zap the amr> capability so the call is transcoded.> > Writting a codec_amr and format_amr would allow every channel to be able to> transcode them.> By the way, do you have them avaiable? Where can i donwload them? How can i> use your library with chan zap?> > > 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.> > Yes, you're rigth, most videophones doesn't allow you to adjust the bandwith> it's send, and if they send you more it wont work.> Transcoding can be done in to ways, the good one and the easy one. The easy> one is just use an h263 decoder and a h263 encoder, the good one,> as somone pointed in the past, would be reuse the motion vectors and some> other data from the decoder so the encoder doesn't need to calculate them> again. Which one are u implementing? And once again, where can i download> it?> > Greetings> Sergio García> http://sip.fontventa.com> > _______________________________________________> --Bandwidth and Colocation provided by Easynews.com --> > asterisk-video mailing list> To UNSUBSCRIBE or update options visit:> http://lists.digium.com/mailman/listinfo/asterisk-video
_________________________________________________________________
Essayez Live.com, votre nouvelle page d'accueil ! Personnalisez-la en quelques clics pour retrouver tout ce qui vous intéresse au même endroit.
http://www.live.com/getstarted
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-video/attachments/20070301/4c2687ce/attachment.htm