Hi, see https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3352 htimestamp returns nonesensical values when recording is active on a EMU20k device lspci: 03:00.0 Audio device: Creative Labs EMU20k2 [Sound Blaster X-Fi Titanium Series] (rev 03) Subsystem: Creative Labs EMU20k2 [Sound Blaster X-Fi Titanium Series] Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at d1200000 (64-bit, non-prefetchable) [size=64K] Memory at d1000000 (64-bit, non-prefetchable) [size=2M] Memory at d0000000 (64-bit, non-prefetchable) [size=16M] Capabilities: <access denied> Kernel driver in use: snd_ctxfi Kernel modules: snd_ctxfi With regards, Carl Klemm