# macOS Audio Routing Issue

## Live Capture

- 2026-07-14T19:05:59Z / 2026-07-14 14:05:59 CDT: started diagnostics while FaceTime call was active.
- Initial process snapshot showed FaceTime, `avconferenced`, `coreaudiod`, `usbaudiod`, `callservicesd`, `audioaccessoryd`, and `ContinuityCaptureAgent` active.
- Recent unified logs showed repeated `avconferenced` CoreAudio converter messages: `Input data proc returned inconsistent 480 packets for 3840 bytes; at 4 bytes per packet, that is actually 960 packets`.
- Recent logs also showed route/input churn, including `audioaccessoryd` `inputDeviceChange` and audio route change notifications.

## Next Signal

When the other party can no longer hear James, capture:

```sh
date -u '+FAILURE_UTC=%Y-%m-%dT%H:%M:%SZ'
swift macOSAudioRoutingIssue/audio_state.swift
/usr/bin/log show --style compact --last 3m --predicate "process == 'coreaudiod' OR process == 'usbaudiod' OR process == 'FaceTime' OR process == 'avconferenced' OR process == 'callservicesd' OR process == 'audioaccessoryd' OR process == 'ControlCenter' OR eventMessage CONTAINS[c] 'Input data proc returned inconsistent' OR eventMessage CONTAINS[c] 'inputDeviceChange' OR eventMessage CONTAINS[c] 'route'"
```