OK I've been testing 0.3.56-1 and the ffmpeg encoding problem is fixed too, so you can close this bug.
- Bug#1014522: pipewire: Regressions in 0.3.53-1 Dylan Aïssi
- Bug#1014522: pipewire: Regressions in 0.3.53-1 Cristian Rigamonti
- Bug#1014522: pipewire: Regressions in 0.3.53-1 Cristian Rigamonti