PipeWire: Difference between revisions

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[https://www.pipewire.org/ PipeWire] is a relatively new (first release in 2017) low-level multimedia framework. It aims to offer capture and playback for both audio and video with minimal latency ~~and~~ support for [[PulseAudio]]-, [[JACK]]-, [[ALSA]]- and [[GStreamer]]-based applications. PipeWire has great [[Bluetooth~~|bluetooth~~]] support~~: because~~ Pulseaudio ~~was~~ [https://github.com/NixOS/nixpkgs/issues/123784 reported to have troubles with ~~bluetooth~~], PipeWire ~~can~~ be a good alternative.

[https://www.pipewire.org/ PipeWire] is a relatively new (first release in 2017) low-level multimedia framework. It aims to offer capture and playback for both audio and video with minimal latency while retaining support for [[PulseAudio]]-, [[JACK]]-, [[ALSA]]-, and [[GStreamer]]-based applications. PipeWire has great [[Bluetooth]] support; due to Pulseaudio being [https://github.com/NixOS/nixpkgs/issues/123784 reported to have troubles with Bluetooth], PipeWire may be a good alternative.

The daemon based on the framework can be configured to be both an audio server (with PulseAudio and JACK features) ~~and~~ a video capture server.

The daemon based on the framework can be configured to be both an audio server (with PulseAudio and JACK features) as well as a video capture server.

PipeWire also supports containers ~~like~~ [[Flatpak]] and does not rely on <code>audio</code> and <code>video</code> user groups, ~~but~~ rather it uses a [[Polkit]]-like security model, asking Flatpak or [[Wayland]] for permission to record screen or audio.

PipeWire also supports containers such as [[Flatpak]] and does not rely on <code>audio</code> and <code>video</code> user groups, rather it uses a [[Polkit]]-like security model, asking Flatpak or [[Wayland]] for permission to record the screen or audio.

As of [https://nixos.org/manual/nixos/stable/release-notes#sec-release-24.11 NixOS 24.11], PipeWire is the default sound server for most graphical sessions.

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systemd.services.myservice2.serviceConfig.SupplementaryGroups = [ "pipewire" ];

}}

=== Setting default sink volume via wireplumber ===

It's possible to declare your desired volume through {{nixos:option|services.pipewire.wireplumber.extraConfig}} by setting [https://pipewire.pages.freedesktop.org/wireplumber/daemon/configuration/configuration_option_types.html wireplumber.settings]'s [https://pipewire.pages.freedesktop.org/wireplumber/daemon/configuration/settings.html default-sink-volume]:<syntaxhighlight lang="nix">

services.pipewire.wireplumber = {

extraConfig = {

"10-default-volume" = {

"wireplumber.settings"."device.routes.default-sink-volume" = 0.8; # default is 0.4

};

</syntaxhighlight>

==Troubleshooting==

@@ Line 1: / Line 1: @@
-[https://www.pipewire.org/ PipeWire] is a relatively new (first release in 2017) low-level multimedia framework. It aims to offer capture and playback for both audio and video with minimal latency and support for [[PulseAudio]]-, [[JACK]]-, [[ALSA]]- and [[GStreamer]]-based applications. PipeWire has great [[Bluetooth|bluetooth]] support: because Pulseaudio was [https://github.com/NixOS/nixpkgs/issues/123784 reported to have troubles with bluetooth], PipeWire can be a good alternative.
+[https://www.pipewire.org/ PipeWire] is a relatively new (first release in 2017) low-level multimedia framework. It aims to offer capture and playback for both audio and video with minimal latency while retaining support for [[PulseAudio]]-, [[JACK]]-, [[ALSA]]-, and [[GStreamer]]-based applications. PipeWire has great [[Bluetooth]] support; due to Pulseaudio being [https://github.com/NixOS/nixpkgs/issues/123784 reported to have troubles with Bluetooth], PipeWire may be a good alternative.
-The daemon based on the framework can be configured to be both an audio server (with PulseAudio and JACK features) and a video capture server.
+The daemon based on the framework can be configured to be both an audio server (with PulseAudio and JACK features) as well as a video capture server.
-PipeWire also supports containers like [[Flatpak]] and does not rely on <code>audio</code> and <code>video</code> user groups, but rather it uses a [[Polkit]]-like security model, asking Flatpak or [[Wayland]] for permission to record screen or audio.
+PipeWire also supports containers such as [[Flatpak]] and does not rely on <code>audio</code> and <code>video</code> user groups, rather it uses a [[Polkit]]-like security model, asking Flatpak or [[Wayland]] for permission to record the screen or audio.
 As of [https://nixos.org/manual/nixos/stable/release-notes#sec-release-24.11 NixOS 24.11], PipeWire is the default sound server for most graphical sessions.
@@ Line 294: / Line 294: @@
 systemd.services.myservice2.serviceConfig.SupplementaryGroups = [ "pipewire" ];
 }}
+=== Setting default sink volume via wireplumber ===
+It's possible to declare your desired volume through {{nixos:option|services.pipewire.wireplumber.extraConfig}} by setting [https://pipewire.pages.freedesktop.org/wireplumber/daemon/configuration/configuration_option_types.html wireplumber.settings]'s [https://pipewire.pages.freedesktop.org/wireplumber/daemon/configuration/settings.html default-sink-volume]:<syntaxhighlight lang="nix">
+  services.pipewire.wireplumber = {
+    extraConfig = {
+      "10-default-volume" = {
+        "wireplumber.settings"."device.routes.default-sink-volume" = 0.8; # default is 0.4
+      };
+    };
+  };
+</syntaxhighlight>
 ==Troubleshooting==