Snapcast: Difference between revisions

imported>Mweinelt
m Add audio category
Article was severly outdated. I updated it using the settings I used.,
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https://github.com/badaix/snapcast
https://github.com/badaix/snapcast
If you are using MPD, you can directly output audio to a FIFO sink and read that sink using Snapcast. For example, see the setup in this blog: https://blog.firedrake.org/archive/2022/11/Home_audio_with_mpd_and_snapcast.html.


== Pipewire Sink ==
== Pipewire Sink ==
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First create a local snapserver instance that creates the FIFO queue to stream into.
First create a local snapserver instance that creates the FIFO queue to stream into.


<syntaxHighlight lang=nix>
<syntaxhighlight lang="nix">
   services.snapserver = {
   services.snapserver = {
     enable = true;
     enable = true;
     codec = "flac";
     settings = {
    streams = {
       stream.source = "pipe:///tmp/snapfifo?name=NAME";
       pipewire  = {
        type = "pipe";
        location = "/run/snapserver/pipewire";
      };
     };
     };
    openFirewall = true;
   };
   };
</syntaxHighlight>
</syntaxhighlight>


Then create a systemd user unit to attach the pipe-sink after pipewire has started.
Tell Pipewire about the sink used by Snapcast.


<syntaxHighlight lang=nix>
<syntaxhighlight lang="nix">
   systemd.user.services.snapcast-sink = {
   services.pipewire.extraConfig.pipewire-pulse."40-snapcast-sink" = {
     wantedBy = [
     "pulse.cmd" = [
      "pipewire.service"
       {
    ];
        cmd = "load-module";
    after = [
        args = "module-pipe-sink file=/tmp/snapfifo sink_name=Snapcast format=s16le rate=48000";
       "pipewire.service"
       }
    ];
    bindsTo = [
      "pipewire.service"
    ];
    path = with pkgs; [
      gawk
       pulseaudio
     ];
     ];
    script = ''
      pactl load-module module-pipe-sink file=/run/snapserver/pipewire sink_name=Snapcast format=s16le rate=48000
    '';
   };
   };
</syntaxHighlight>


</syntaxhighlight>


There is a new direct connection of Pipewire with Snapcast in the making. However, as of March 16, 2026, the version of Pipewire in Nixpkgs (1.4.X) does not support this new feature yet (available starting with Pipewire version 1.6.0).
== Playback ==
== Playback ==


To have local audio synced up with remote clients it needs to be routed through a local snapclient instance.
To have local audio synced up with remote clients it needs to be routed through a local snapclient instance.


<syntaxHighlight lang=nix>
<syntaxhighlight lang="nix">
   systemd.user.services.snapclient-local = {
   systemd.user.services.snapclient-local = {
     wantedBy = [
     wantedBy = [
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     ];
     ];
     serviceConfig = {
     serviceConfig = {
       ExecStart = "${pkgs.snapcast}/bin/snapclient -h ::1";
       ExecStart = "${pkgs.snapcast}/bin/snapclient tcp://localhost:1704";
     };
     };
   };
   };
</syntaxHighlight>
</syntaxhighlight>


[[Category:Audio]]
[[Category:Audio]]