online music racer
Find a YouTube video and Beatline will prebuild an immutable road from its beats and frequency bands. Swipe to steer, collect notes on beat, and compete on that video’s global ranking.
BEATLINE / RESULT
Before a run, Beatline detects beat times and the energy of the bass, mid, and high bands. That map builds the climbs, drops, banked turns, loops, rings, colors, and notes once. Geometry stays fixed during play, so music never shakes the camera. Every YouTube video ID owns a separate global leaderboard.
Video plays through the official YouTube player. For the first track build, the server temporarily decodes the audio, stores only a numerical beat and frequency map, and immediately removes the source file. No microphone is used.