-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 apt-X is actually inferior to Opus from what I've heard. Opus is the maturation of the CELT and SILK codecs, is patent-unencumbered and open, and is an IETF standard: http://www.opus-codec.org/ and http://tools.ietf.org/html/rfc6716 - it's also damn good, with a wide range of bandwidths supported (both audio and network bandwidths), and low latency.
http://www.opus-codec.org/comparison/ has graphs and tests. To my ears and spectrograms at least, Opus is superior to AAC, Ogg and MPEG for transmission. These days LPCM is the no-brainer for storage, with storage being cheap now. I suspect I need to move this off-list; I'll get a mailing list set up in due course... Cheers, James Harrison On 24/10/2012 16:06, Rob Landry wrote: > > ...Opus codec? That's a new one to me. > > How does it compare with AAC, Ogg, and MPEG? > > I'd love to see apt-X become available some day. The patents must be running out one of these days. > > > Rob > > On Mon, 22 Oct 2012, James Harrison wrote: > >> > 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] >> 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 Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlCIQXAACgkQ22kkGnnJQAyl5QCcCDQm+85hnKMMDgKb1d/7jA2x /mgAn0sRBHOtjsdsf7rflyLdM6MRXCtJ =dLvG -----END PGP SIGNATURE-----
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