You Laugh You Lose

Pick a video and try not to laugh

Camera and ~5 MB of MediaPipe models load on first start. Everything stays on your device.

Smile

0.00

Jaw

0.00

0.00Peak

0.00Average

0:00Elapsed

Expression intensity (synced to video)

0:00 --:--

Challenge complete!

0.00 Laugh score

— Funniest moment

0% Video watched

Expression timeline — click to seek

0:00 --:--

Replay

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Introduction

You Laugh You Lose is a challenge game: pick a funny YouTube video, keep a straight face, and see how long you can last. Your webcam watches for smiles and laughs using MediaPipe Face Landmarker blendshapes (mouthSmileLeft, mouthSmileRight, jawOpen).

All processing runs in your browser — no video is uploaded. Expression values are recorded continuously and plotted on a timeline synced to the YouTube video.

How it works

MediaPipe Face Landmarker detects facial expressions from your webcam feed.
The YouTube IFrame API tracks video position and detects when the video ends.
MediaRecorder captures your face cam for replay on the results screen.
Laugh intensity is tracked continuously (no threshold) and plotted against video time.

updated 2026-09-28 17:04 UTC · 5a52310