{
  "captured_at": "20260923T000200Z",
  "feature": "keyboard-real-touch",
  "description": "Operator-guided finger test: Keyboard show, hide, show, then echo 1qaz0plm and Enter. Intended real touch; camera and Goodix events must verify actual actions.",
  "capture_source": {
    "device": "/dev/video0",
    "input_format": "mjpeg",
    "video_size": "1920x1080",
    "framerate": 30
  },
  "interaction_provenance": "real-touch",
  "provenance_note": "Operator-declared metadata does not prove that footage shows a real touch.",
  "artifact": {
    "path": "docs/evidence/shell-real-touch-keyboard/20260923T000200Z-keyboard-real-touch.mp4",
    "kind": "mp4",
    "duration_seconds": 180.0,
    "presentation_rotation": 180,
    "actual_duration_seconds": 85.033333
  },
  "ffmpeg_command": [
    "ffmpeg",
    "-hide_banner",
    "-loglevel",
    "warning",
    "-f",
    "v4l2",
    "-input_format",
    "mjpeg",
    "-video_size",
    "1920x1080",
    "-framerate",
    "30",
    "-i",
    "/dev/video0",
    "-vf",
    "transpose=2,transpose=2,scale=out_range=tv",
    "-t",
    "180.0",
    "-an",
    "-c:v",
    "libx264",
    "-pix_fmt",
    "yuv420p",
    "-color_range",
    "tv",
    "-preset",
    "veryfast",
    "-crf",
    "23",
    "-threads",
    "2",
    "-movflags",
    "+faststart",
    "-y",
    "docs/evidence/shell-real-touch-keyboard/20260923T000200Z-keyboard-real-touch.mp4"
  ],
  "dry_run": false,
  "capture_end": {
    "reason": "Operator reported done; coordinator sent SIGINT to the verified FFmpeg process to finalize the MP4.",
    "ffmpeg_exit_code": 255,
    "container_probe": "ffprobe successfully read the finalized 85.033333-second MP4."
  }
}