Larry and Pete, Thanks a bunch for jumping in and giving me some ideas! I am hoping to have something working soon with what you guys have given me. The end game for me is to be able to stream MP3s from a playlist. It appears like both solutions you guys have proposed may give me what I need. I will actually try both and let you know how it goes. --Matt
From: [email protected] To: [email protected] Date: Thu, 1 Oct 2015 06:15:17 +0800 Subject: Re: [asterisk-users] Change Asterisk MulticastRTP codec On my Asterisk 11 system I have the following in extensions.ael for chan_sip. 8001 => { Set(SIP_CODEC=alaw); //Dial(MulticastRTP/linksys/224.168.168.168:34567/224.168.168.168:6061); Page(MulticastRTP/linksys/224.168.168.168:34567/224.168.168.168:6061,q,5); Hangup(); }; I believe in your case you need to set PJSIP_MEDIA_OFFER(ulaw) in a pre-dial handler prior to making the call. See https://wiki.asterisk.org/wiki/display/AST/Pre-dial+handlers+Specification. On 1/10/2015 1:51 AM, Matthew Murphy wrote: Greetings everyone, I was wondering if there was a way to change the codec that Asterisk uses when streaming via MulticastRTP. Or perhaps a way to transcode the multicast stream. In the CLI, when I have a multicast stream in progress, I am typing 'core show channel MulticastRTP/0x7f7........' to get lots of helpful information. I have noticed that when I do a MULTICAST page and send data from MP3Player, I get no sound on my speakers and get the following from 'core show channel PJSIP/xxx': NativeFormats: (slin) WriteFormat: slin ReadFormat: slin WriteTranscode: No ReadTranscode: No I have noticed that when I do a UNICAST page and send data from MP3Player, everything works flawlessly and I get the following from 'core show channel MulticastRTP': NativeFormats: (ulaw) WriteFormat: slin ReadFormat: slin WriteTranscode: Yes (slin@8000)->(ulaw@8000) ReadTranscode: Yes (ulaw@8000)->(slin@8000) The only thing that is changing is the following line in my extensions.conf file: ; For Multicast Paging same => n(next),Page(MulticastRTP/basic/239.1.1.2:6061,q) ; For Unicast Paging same => n(next),Page(PJSIP/107&PJSIP/108,ib(pjsip-auto-answer-header^addheader^1)|p}) Is there any way to get the MP3Player stream to transcode (as it does on the UNICAST stream) when I try to MULTICAST? Thanks for the help, --Matt -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
-- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
