Many doubted my report of a near head-on under Tesla FSD 14.3.3: "no proof FSD was on, no proof your intervention avoided anything."
Turns out Tesla embeds per-frame telemetry inside the dashcam video files themselves (H.264 SEI metadata). I had all 433 frames decoded: speed, steering angle, pedals, GPS, and the automation-engagement flag.
What the data show: • Engaged, zero pedal input, steady 50 mph at night • A red lens-flare "ghost" blooms on the right shoulder; ~0.2 s later the system brakes at 0.9 g and steers LEFT toward the double yellow with an oncoming car ~1 second away • My wheel yank (−5.6°→ 34.6° in 0.3 s) drops the engagement flag mid-maneuver, the exact signature of a steering-override disengagement • At closest approach our left flank was at the centerline as the oncoming sedan passed
On the recorded trajectory, one more second would have resulted in an offset head-on at ~70 mph combined closure. The proof was embedded in the video all along.
I'm happy to share the entire report AMAZINGLY analyzed by Claude Fable 5.