Hello again James, Thank you so much for your reply and such helpfull information!
I'll read all the info on these links you suplied, than you again! Atenciosamente,**** ** ** *Fernando Della Torre* Tecnologia da Informação**** (: +55 16 8137-1240 (: +55 16 9137-2886 *: *[email protected]***** V.D.I.T. Soluções em Virtualização**** ** ** ** ** A utilização deste e-mail não implica em autorização ou outorga de poderes para seu usuário praticar qualquer ato em nome das empresas citadas, cuja representação considera-se válida se praticada exclusivamente por representante legal ou procurador devidamente constituído, na forma estabelecida em seu respectivo estatuto ou contrato social 2012/11/29 James Harrison <[email protected]> > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Couple of things can affect delay. Sound cards is one thing - the > jitter buffer in OpenOB is the other. By default this is 150ms, > suitable for decent Internet links, and is tweaked with the -j option > on the transmitter. -j 5 should be fine on fast ethernet for 5ms > latency internal to OpenOB. There's nowhere else inside OpenOB itself > that can add latency. > > Sound cards will almost certainly make up the rest of the latency, and > that's down to system config like using a low-latency kernel and small > period sizes. See http://www.alsa-project.org/main/index.php/Asoundrc > and http://www.alsa-project.org/main/index.php/FramesPeriods for more > info there - basically, tweak period_size and periods. You may find > you need a non-onboard sound card, but some onboard drivers can be > fine. There's loads of info out there for low-latency Linux operation > and I should really write up some of it into the OpenOB docs or a > supporting site, and I will once I get some spare time. > > Hope that helps! > > Cheers, > James Harrison > > On 29/11/2012 16:03, Fernando Della Torre wrote: > > Hello James, > > > > This is my very first time experience with OpenOB. > > > > I have set up 2 old IBM P4 HT 3Ghz desktops running Wheezy and > > installed OpenOB on both. They are running OpenOB on the onboard > > sound cards through ALSA over a 100Mbit fast ethernet. > > > > Using 96kbps Opus I get 390ms of delay, and using PCM 360ms, far > > above the mentioned 50ms, what am I doing wrong? > > > > Thanks for building such usefull software! Congratulations, > > > > > > Regards, > > > > > > > > Atenciosamente,____ > > > > __ __ > > > > *Fernando Della Torre__* > > > > Tecnologia da Informação____ > > > > (: +55 16 8137-1240 > > > > (: +55 16 9137-2886 > > > > *: [email protected] <mailto:[email protected]>_____ > > > > V.D.I.T. Soluções em Virtualização____ > > > > __ __ > > > > __ __ > > > > A utilização deste e-mail não implica em autorização ou outorga de > > poderes para seu usuário praticar qualquer ato em nome das > > empresas citadas, cuja representação considera-se válida se > > praticada exclusivamente por representante legal ou procurador > > devidamente constituído, na forma estabelecida em seu respectivo > > estatuto ou contrato social > > > > > > > > > > 2012/10/22 James Harrison <[email protected] > > <mailto:[email protected]>> > > > > > > I know a few Rivendellers have used the earlier (beta) versions of > > OpenOB in the past so here's a quick notice to all that OpenOB 2.3 > > is out, with stable support for the Opus codec recently standarized > > by the IETF, which supports bitrates as low as 16kbps or up to > > 384kbps with a variety of audio bandwidths. > > > > OpenOB is the open outside broadcast tool, an audio over IP link > > tool which makes moving audio over a network in realtime with very > > low latencies (<10ms in PCM mode, <50ms in Opus mode) fairly > > trivial. > > > > Other improvements include proper Python packaging for easy > > installation, reliability improvements, visual feedback changes and > > an improved command line interface. > > > > Support for the Raspberry Pi single-board computer has now been > > tested, confirmed and verified. It works out of the box with no > > issues using USB sound cards. This means you can put a link > > together (both ends) for under £200. > > > > You can nab yourself a copy here: > > http://jamesharrison.github.com/openob/ - all you need is two > > computers running Linux. > > > > </list-hijack - sorry!> > > > > _______________________________________________ Rivendell-dev > > mailing list [email protected] > > <mailto:[email protected]> > > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev > > > > > > > > > > _______________________________________________ Rivendell-dev > > mailing list [email protected] > > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.17 (MingW32) > Comment: Using GnuPG with undefined - http://www.enigmail.net/ > > iEYEARECAAYFAlC3xAAACgkQ22kkGnnJQAya/ACdEuo5vLqC/24ERAf9GizARSjX > dn4AoIpsXhDPdttcrwV11yxZNVGe+5rG > =liz1 > -----END PGP SIGNATURE----- > _______________________________________________ > Rivendell-dev mailing list > [email protected] > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev >
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