somewhat experimental update for voice chat but it aint making it worse i guess

streaming-agent/gst_agent.py

@@ -125,10 +125,18 @@ class CSSStreamAgent:
             f'webrtcbin. '
 
             # Game audio: pipewiresrc → Opus
-            # pipewiresrc is the native PipeWire GStreamer source (Ubuntu 24+/26).
-            # It connects to the default audio output monitor via PipeWire directly,
-            # avoiding the PulseAudio compatibility layer entirely.
-            f'pipewiresrc ! '
+            # pipewiresrc with no target follows PipeWire's default *capture*
+            # node (the microphone, virtual_mic) — not the default sink's
+            # monitor — so without explicit targeting it silently captured
+            # the mic into this track instead of game audio.
+            # game_output is a single PipeWire node with both playback ports
+            # (what CSS writes to) and monitor ports (the loopback read side)
+            # on the same node — there's no separate "game_output.monitor"
+            # node. stream.capture.sink=true tells PipeWire's autoconnect to
+            # link to that node's monitor/capture-sink ports rather than
+            # treating it as a regular source.
+            f'pipewiresrc target-object=game_output '
+            f'stream-properties="props,stream.capture.sink=(boolean)true" ! '
             f'audio/x-raw,format=F32LE,rate=48000,channels=2 ! '
             f'audioconvert ! '
             f'opusenc ! '