PipeWire — Next-Generation Audio and Video Framework for Linux

Introduction

PipeWire is a server and API for handling multimedia on Linux, designed to replace both PulseAudio (consumer audio) and JACK (professional low-latency audio) with a single unified framework. It also handles video streams, enabling secure screen sharing under Wayland compositors.

What PipeWire Does

• Routes audio and video streams between applications and hardware devices
• Provides PulseAudio and JACK compatibility layers for existing applications
• Enables low-latency audio processing suitable for professional music production
• Handles screen capture and camera streams for Wayland-native applications
• Manages Bluetooth audio codecs including AAC, LDAC, and aptX

Architecture Overview

PipeWire is written in C and runs as a user-space daemon managed by a session manager (WirePlumber by default). It processes media through a graph of linked nodes, where each node represents a source, sink, or filter. The graph executes in a real-time thread with configurable quantum (buffer) sizes as low as 32 samples. Compatibility modules translate PulseAudio and JACK API calls into native PipeWire operations.

Self-Hosting & Configuration

• Ships as the default audio stack on Fedora, Ubuntu 22.10+, and many modern distros
• On older systems, install pipewire, pipewire-pulse, and wireplumber packages
• Configure default sample rate and buffer size in pipewire.conf
• Use WirePlumber Lua scripts to define routing policies and device profiles
• Adjust Bluetooth codec preferences in the bluetooth configuration files

Key Features

• Drop-in replacement for both PulseAudio and JACK simultaneously
• Sub-millisecond latency capability for real-time audio work
• Secure video capture for screen sharing under Wayland using xdg-desktop-portal
• Per-stream volume control, routing, and format negotiation
• Bluetooth audio with support for modern high-quality codecs

Comparison with Similar Tools

• PulseAudio — the previous standard for desktop Linux audio; PipeWire replaces it with lower latency
• JACK — professional audio server; PipeWire provides equivalent latency with simpler setup
• ALSA — kernel-level audio layer; PipeWire sits above ALSA and adds routing and mixing
• CoreAudio (macOS) — Apple's integrated audio stack; PipeWire serves a similar unified role on Linux

FAQ

Q: Can I use PipeWire for professional audio production? A: Yes. With buffer sizes down to 32 samples, it matches JACK's latency for real-time work.

Q: Will my PulseAudio applications still work? A: Yes. PipeWire includes a PulseAudio compatibility daemon that handles existing apps transparently.

Q: Does PipeWire handle screen sharing? A: Yes. It provides the video capture backend for Wayland screen sharing via xdg-desktop-portal.

Q: How do I switch from PulseAudio to PipeWire? A: Install pipewire-pulse and wireplumber, then disable PulseAudio. Most modern distros handle this automatically.

Sources

• https://gitlab.freedesktop.org/pipewire/pipewire
• https://pipewire.org