Allow camera · Move face into frame · Drag to orbit
Mouth vertical span (landmarks 13–14) drives the breath estimate — slow inhale/exhale reads as motion on the lower bar.
Optional: Enable sound (bottom‑right). You should hear a short test tone first; breath‑out uses piano if the WAV loads, otherwise a soft synth. Needs http(s) (not file://). Press M to retry audio.

Breath estimate (mouth motion, not medical)
Openness

Experimental visualization only. Camera frames stay in your browser for this session.