Lua scripts, modules, and WirePlumber clients can use PipeWire metadata tools and API to change the settings at runtime. Lua scripts, modules, or WirePlumber clients interested in any of the settings can also subscribe for callbacks to know the changes in settings. If a User/Client wants to change the settings at runtime (using pw-metadata as explained in Dynamic settings) then we recommend considering enabling persistent behavior (or simply persistency), so that the setting changes are saved to state file and are remembered across reboots.