[pulseaudio-discuss] Multiple simultaneous sinks for a single stream

Mark Greenwood fatgerman at ntlworld.com
Tue Mar 10 03:30:21 PDT 2009

On Tuesday 10 March 2009 03:45:04 Jud Craft wrote:
> Is this possible?  I haven't used Fedora in a month or two (which I
> regard as close to upstream as I dare to venture), but I recall that
> it was only possible to move a stream between sinks, as opposed to
> selecting different sinks for playback.
> I'm not sure of a good use case for that one -- perhaps the ability to
> listen to audio locally, and stream it over network to a nearby
> location at the same time.  Or, for multiple sets of outputs (I think
> I seem to recall a discussion post Pulseaudio developers where it said
> that Pulse could help link two or three different stereo outputs into
> a virtual surround output, or something like that.  Possibly my
> understanding is in over it's league).
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You can use RTP multicast to stream from one to many. Multicast reception can be enabled/disabled on each sink depending on who wants to listen to whatever you're broadcasting. Not quite what you're asking for but it does work. You can either multicast whatever you're listening to locally, or create a separate sink for multicasting.

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