Hi Sergio Thanks for the reply. app transcoder only supports h263p. I have a small doubt; please correct me if I am wrong. Consider the following use case:
Xlite is configured with h263-1996 Linphone is configured with h263p. Xlite is placing call to linphone. So ; the codec between xlite and asterisk is h263-1996; and between asterisk and linphone is h263p. App transcoder will convert incoming h263-1996 packets into h263p.So i can expect xlite will be able to send video to linphone. Now my confusion is : Will app transcoder also convert incoming h263 packets from linphone to h263-1996? Othewise it is not possible to send video from linphone to xlite. Since app transcoder supports h263p; if i keep codecs in both the phones h263p; video will appear in both the phone. But then. i do not really need app transcoder; asterisk is capable of doing it without app transcoder. It seems app_transcoder only supports oneway video; Because if we use transcoding between h263p and other codecs ( say mpeg/h263/h261); app_transcoder will be able to encode other codecs to h263p but it will not be able to do the opposite; and we will only see one way video. By the way ; what are the codecs are supported by libavcodec and asterisk? I am interested in : h261 h263 h263p h264 mpeg-4 Thanks and regards Anand 2009/11/3 Sergio Garcia Murillo <[email protected]> > Hi anandapip, > > app_transcoder only supports encoding in h263-1998/2000 (h263p), not in > h263-1996. > > > Best regards > Sergio > > anandadip mandal escribió: > > Hi Sergio > Thanks for the reply. > There was a problem in my ffmpeg (livavcodec) which was not buit with > videocodec support.I have replaced it and now not getting the error. > But a strange problem I am facing now. > I have tried transcoding between h263 and h263+.I have used Xlite and > linphone. > I am calling from linphone which is using h263-1998 codec; App transcoder > encodes the incoming h263-1998 to h263 and places call to xlite. It is > also evident from the sip signalling traces that codec between asterisk and > linphone is h263-1998 and between asterisk and xlite is h263.But if i > configure xlite only for h263 ; no video is apperaing. But if i keep codec > in xlite h263-1998 (i.e h263+) video appears. > I am not sure if app_transcode module is really encoding in h263 format > thogh log says it is encoding. > > Thanks and regards > Anand > > > > On 02/11/2009, Sergio Garcia Murillo <[email protected]> wrote: >> >> Hi anandadip >> >> Get the core dump and a back trace of asterisk when it seg faults >> >> Best regards >> Sergio >> >> anandadip mandal escribió: >> >> Hi >> I want to make video call between two sip phone having different video >> codecs using app_transcoder. >> I have used the following dialplan >> [default] >> exten => 101,1,Answer >> exten => 101,2,transcode(,1...@default,h...@qcif >> /fps=12/kb=52/qmin=4/qmax=12/gs=50) >> exten => 102,1,Dial(SIP/101) >> >> the 102 ( having h263-1998 codec) extension is calling 101 (having h263 >> codec). >> I can see the call between the two phone established but no video; also i >> dont see any ack coming from 101 and within seconds asterisk gives a >> segfault. >> Without app transcoder, video call works fine when both phone use >> h263-1998 codec. >> I am using asterisk 1.4; the transcode module loads succesfully; even it >> executes and places a call to the configured extension) >> >> Please help me if i am using the correct dialplan or am i missing >> something. >> >> Any help will be much appreciated. >> >> Regards >> Anand >> >> >> >> On 26/10/2009, anandadip mandal <[email protected]> wrote: >>> >>> Hi >>> I have successfully compiled and able to load the app_transcoder.so; >>> I want to know the configuration of extension.conf to put the >>> app_transcoder in use. >>> I have two sip soft phone(video capable) 3000, 3001 which are already >>> registered to asterisk and I can make audio call between them; >>> Also please let me know if i have to add anything specific to >>> extesion.conf and sip.conf for enabling video call. >>> Any help will be very much appreciated. >>> Thanks and regards >>> Anand >>> >>> >>> 2009/10/20 anandadip mandal <[email protected]> >>> >>>> is there any document for compilation procedure of app transcoder?also >>>> could someone point me how to integrate it with asterisk? >>>> Thanks >>>> Anand >>>> >>>> >>> >>> >>> -- >>> Anandadip Mandal >>> >> >> >> >> -- >> Anandadip Mandal >> >> ------------------------------ >> >> >> _______________________________________________ >> --Bandwidth and Colocation Provided by http://www.api-digital.com-- >> >> asterisk-video mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-video >> >> >> >> >> _______________________________________________ >> --Bandwidth and Colocation Provided by http://www.api-digital.com-- >> >> asterisk-video mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-video >> > > > > -- > Anandadip Mandal > > ------------------------------ > > _______________________________________________ > --Bandwidth and Colocation Provided by http://www.api-digital.com-- > > asterisk-video mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-video > > > > _______________________________________________ > --Bandwidth and Colocation Provided by http://www.api-digital.com-- > > asterisk-video mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-video > -- Anandadip Mandal
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