On 22.03.2016 17:06, James Greenlee wrote: > > I'll check out ffmpeg and gstreamer. > > Audio encoding/decoding takes time (latency). Perhaps I should have said "low-latency." So what I want is a low-latency audio encoding/streaming system. > > Here's one solution that works using icecast: gst-launch-1.0 jackaudiosrc connect=0 ! audio/x-raw,channels=8 ! vorbisenc ! webmmux ! shout2send ip=HOSTNAME port=12000 password=PASSWORD mount=/8ch.webm Currently, opus in gstreamer doesn't support more than two channels, but opus should have a lower latency (and quality per bits) than vorbis. Of course you are right that audio encoding introduces latency. Additionally you have two TCP connections (sender -> icecast and icecast -> receiver) which introduce latency. Furthermore, icecast buffers every stream (configurable) but icecast cannot be used for low-latency audio distribution. If you want a low-latency system, you have a fast, low-latency network (i.e. not "the internet") and you have control over both sender and receiver, netjack is the best solution (http://jackaudio.org/faq/netjack.html and https://github.com/jackaudio/jackaudio.github.com/wiki/WalkThrough_User_NetJack2) Best regards, Jannis > > ----- Original Message ----- > From: "Markus Seeber" <markus.seeber@xxxxxxxxxxxxxxx> > To: linux-audio-user@xxxxxxxxxxxxxxxxxxxx > Sent: Tuesday, March 22, 2016 11:27:00 AM > Subject: Re: Multi-input streaming > > On 03/22/2016 03:53 PM, James Greenlee wrote: >> I'm looking to setup something to take multiple inputs from a audio interface (say 8 channels) and then encode those inputs to several (MP3?) streams and send them to a icecast server for distribution. >> >> I've used darkice/icecast on the same system with the built-in sound card (2 inputs), and now I want to ramp that up to say 8 inputs / streams. >> > > Maybe have a closer look at ffmpeg/avconv or gstreamer? > > ffmpeg can grab input devices and do all kinds of stuff with the streams. > >> I'd prefer this to be as close to real-time as possible > > What is that supposed to mean? > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
