voice_over

{
  "detector_name": "voice_over",
  "config": {
    "fail_if_voice_over": true
  }
}

{
  "detector_name": "voice_over",
  "pass_check": false,
  "score": 0.22,
  "rationale": "Voice-over detected: only 12.0% of speech has face visible (min: 50.0%)",
  "metrics": {
    "is_voice_over": true,
    "is_silent": false,
    "speech_duration_sec": 18.4,
    "on_camera_speech_duration_sec": 2.2,
    "on_camera_speech_ratio": 0.12,
    "face_presence_ratio": 0.2,
    "mouth_motion_ratio": 0.3,
    "total_frames": 60,
    "frames_with_face": 12,
    "speech_frames": 22,
    "requirements": {
      "min_on_cam_ratio": 0.5,
      "min_face_presence_ratio": 0.5,
      "mouth_motion_threshold": 1.5
    }
  }
}