---
title: "Set input-group member volume"
method: POST
path: "/api/pipewire/control/input-groups/{id}/members/{memberIndex}/volume"
tags: ["pipewire"]
---

# Set input-group member volume

`POST /api/pipewire/control/input-groups/{id}/members/{memberIndex}/volume`

Sets the volume (0-100%) of a member within an input group (mix bus), addressed by its zero-based member index. Applied live to the member loopback via channelmix and persisted. Note: the primary fppd stream's volume is governed by fppd itself, not a loopback.

## Request body

- object

## Response `200`

Member volume applied and persisted

- object

## Other responses

- `400` — Missing 'volume'
- `404` — Member not found in input group
- `409` — PipeWire backend not active

## Changes

- **2026-05-17** `b06d8ae6f3f2` — 1 info
  - endpoint added
- **2026-05-13** `34a577bdabff` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/falconchristmas/apis/fpp-api/changes/api/pipewire/control/input-groups/:id/members/:memberIndex/volume/post.md)

---

[API](https://skmtc.dev/falconchristmas/apis/fpp-api.md) · [All operations](https://skmtc.dev/falconchristmas/apis/fpp-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/falconchristmas/fpp-api/revisions/2d744b175449/schema)