The player start and the video play but with no audio track selected, trying to click on the OSC ( mpv gui ) to select the audio track do nothing and log errors
mpv --ao=pipewire video.webm
Resuming playback. This behavior can be disabled with --no-resume-playback.
(+) Video --vid=1 (*) (vp9 1920x1080 25.000fps)
(+) Audio --aid=1 --alang=eng (*) (opus 2ch 48000Hz)
Using hardware decoding (nvdec).
[ao] Failed to initialize audio driver 'pipewire'
Could not open/initialize audio device -> no sound.
Audio: no audio
VO: [gpu] 1920x1080 cuda[nv12]
Track switched:
(+) Video --vid=1 (*) (vp9 1920x1080 25.000fps)
(+) Audio --aid=1 --alang=eng (*) (opus 2ch 48000Hz)
[ao] Failed to initialize audio driver 'pipewire'
Could not open/initialize audio device -> no sound.
Audio: no audio
(Paused) V: 00:00:50 / 00:26:38 (3%)
So no the native version using pipewire backend cannot play audio, but it does not stall like the flatpak version.