--mpv-ao=pipewire: Audio output pipewire not found

[gistart]

Overview

mpv standalone detects pipewire and plays sound, but celluloid selects pulse by default and when forced -- fails to use pipewire.

% mpv --msg-level=hwdec=info --ao=pipewire fake_05.mp4  
 (+) Video --vid=1 (*) (h264 1920x1080 30.000fps)
 (+) Audio --aid=1 (*) (aac 2ch 48000Hz)
Using hardware decoding (vaapi).
AO: [pipewire] 48000Hz stereo 2ch floatp
VO: [gpu] 1920x1080 vaapi[nv12]
Exiting... (Quit)

With and without extra mpv options: --hwdec=auto --vo=gpu-next --hwdec-codecs=all

% celluloid --mpv-msg-level=hwdec=info --mpv-ao=pipewire fake_05.mp4
celluloid-Message: 15:17:50.823: [cplayer] ● Video  --vid=1  (h264 1920x1080 30 fps) [default]
celluloid-Message: 15:17:50.823: [cplayer] ● Audio  --aid=1  (aac 2ch 48000 Hz 128 kbps) [default]
celluloid-Message: 15:17:50.823: [vd] Using hardware decoding (vaapi).
celluloid-Message: 15:17:50.823: [ao] Audio output pipewire not found!
celluloid-Message: 15:17:50.823: [ao] Failed to initialize audio driver 'pipewire'
celluloid-Message: 15:17:50.823: [cplayer] Could not open/initialize audio device -> no sound.
celluloid-Message: 15:17:50.823: [cplayer] Audio: no audio
celluloid-Message: 15:17:50.823: [cplayer] VO: [libmpv] 1920x1080 vaapi[nv12]

versions

• mpv 0.37.0
• celluloid 0.29
• pipewire 1.0.5

Steps to reproduce

1. force ao=pipewire: celluloid --mpv-ao=pipewire
2. open video file

Actual results

[ao] Failed to initialize audio driver 'pipewire'
[cplayer] Could not open/initialize audio device -> no sound.
[cplayer] Audio: no audio

Expected results

audio working

Version

0.29

Install method

ubuntu 24.04 snap

Additional information

No response

[gnome-mpv]

I'm unable to reproduce this with Celluloid compiled from source, so this might be specific to the Snap package.

/cc @sameersharma2006

[sameersharma2006]

The mpv packaged along with celluloid snap isn't compiled with pipewire due to snap core like content snaps & snapd along with xdg portal related issues, in upcoming core26 & gnome50 content snap will try re-enabling.