Salida de sprint con silencio repentino

A 12-second athletics spot, one continuous take, real-time, no slow motion at any point. A sprinter in an unbranded charcoal kit in the blocks of lane four, a full stadium at night under white light. No logo and no readable text anywhere in frame. 0-3s: Camera on the track surface in front of the blocks, low enough that her knuckles are at lens height. Full stadium noise: crowd, a PA echo, camera shutters, a whistle. 3-6s: The starter's gun fires. On that exact frame every sound in the stadium cuts out and only her breathing remains, close and dry, as though the microphone were inside her chest. She comes out of the blocks and takes three strides. 6-9s: The camera pulls back down the track faster than she accelerates so the gap between her and the lens opens. Her spikes bite, the track compresses under each plant, and her shadow runs beside her. The stadium is still visibly roaring and still inaudible. 9-12s: On the fourth stride the crowd comes back all at once at full volume. The camera stops and lets her run through frame and out of it. The shot ends on empty track with the blocks still in it. Same athlete, kit, lane and light throughout. Spikes make contact with the surface on every plant. No product appears in the frame at any point. Audio: full stadium for three seconds, then breath alone with a low room tone under it, then the crowd returning on one frame. No music and no voiceover.