{
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      "check": "container_and_streams",
      "detail": "Streams match the output contract.",
      "limits": {
        "audio": "aac 48000 Hz stereo",
        "video": "h264 yuv420p 1920x1080 30 fps"
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      "measured": {
        "audio_codec": "aac",
        "channels": "stereo",
        "color": "tv, bt709, progressive",
        "duration_s": 180,
        "fps": 30,
        "height": 1080,
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        "sample_rate_hz": 48000,
        "video_codec": "h264",
        "width": 1920
      },
      "passed": true
    },
    {
      "check": "duration_and_frames",
      "detail": "5400 of 5400 planned frames decoded.",
      "limits": {
        "duration_s": 180,
        "frames": 5400,
        "tolerance_s": 0.083333
      },
      "measured": {
        "container_duration_s": 180,
        "decoded_frames": 5400
      },
      "passed": true
    },
    {
      "check": "frame_hash_spot_checks",
      "detail": "12 of 12 sampled frames match their scene evaluation.",
      "limits": {
        "frame_hash": "equal",
        "min_ssim": 0.95,
        "png_sha256": "equal"
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      "measured": {
        "discriminating_spots": 12,
        "failures": [],
        "min_ssim": 0.996443,
        "spots": 12
      },
      "passed": true
    },
    {
      "check": "black_frames",
      "detail": "No black run.",
      "limits": {
        "max_black_run_s": 0.5
      },
      "measured": {
        "segments": []
      },
      "passed": true
    },
    {
      "check": "frozen_frames",
      "detail": "2 freeze(s) outside planned holds.",
      "limits": {
        "allowed": "inside planned holds",
        "min_freeze_s": 2
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      "measured": {
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            "start_s": 1.7
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            "start_s": 113.8
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            "start_s": 121.9
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            "start_s": 134.6
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            "start_s": 144.3
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        "unexplained": [
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      "passed": false
    },
    {
      "check": "integrated_loudness",
      "detail": "Integrated -15.6 LUFS, true peak -1.4 dBTP.",
      "limits": {
        "target_lufs": -15.6,
        "tolerance_lu": 1,
        "true_peak_max_dbtp": -1
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      "measured": {
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        "lra_lu": 2.4,
        "true_peak_dbfs": -1.4
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      "passed": true
    },
    {
      "check": "caption_timing_coverage",
      "detail": "Captions cover 99.9% of measured narration speech.",
      "limits": {
        "min_coverage": 0.95,
        "sidecar": "equal to the caption track"
      },
      "measured": {
        "coverage": 0.9987,
        "covered_s": 141.039,
        "cues": 44,
        "cues_without_speech": [],
        "sidecar_cues": 44,
        "speech_s": 141.223
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      "passed": true
    },
    {
      "check": "synthetic_disclosure",
      "detail": "File metadata states what is synthetic or generated.",
      "limits": {
        "comment": "Synthetic visuals: procedural motion graphics rendered from code. Generated media: AI-generated voice (Kokoro-82M v1.0, voice af_heart, run locally), disclosed in MP4 metadata and deliverables; not a person. Four multi-section instrumental stems generated locally from text prompts with Meta MusicGen (facebook/musicgen-small), EQ-notched at 1850 Hz for speech clarity and lookahead-ducked under narration. Motion graphics rendered from code by this video's stage; example data on screen is synthetic. Narration is an AI-generated voice (Kokoro-82M v1.0, voice af_heart), disclosed in file metadata and delivery manifests. Background underscore is synthesized locally with Meta MusicGen (facebook/musicgen-small) across four acts, EQ-notched and ducked under the voice. Interface shots are real captures: the live public pages of eranos.ta-amps.workers.dev and agora.ta-amps.workers.dev, and a local Eranos and Tessera run with scripted agents and synthetic data. The reveal board shows what the local production Tessera store held when the board was composed; the render and check receipts were written after it."
      },
      "measured": {
        "comment": "Synthetic visuals: procedural motion graphics rendered from code. Generated media: AI-generated voice (Kokoro-82M v1.0, voice af_heart, run locally), disclosed in MP4 metadata and deliverables; not a person. Four multi-section instrumental stems generated locally from text prompts with Meta MusicGen (facebook/musicgen-small), EQ-notched at 1850 Hz for speech clarity and lookahead-ducked under narration. Motion graphics rendered from code by this video's stage; example data on screen is synthetic. Narration is an AI-generated voice (Kokoro-82M v1.0, voice af_heart), disclosed in file metadata and delivery manifests. Background underscore is synthesized locally with Meta MusicGen (facebook/musicgen-small) across four acts, EQ-notched and ducked under the voice. Interface shots are real captures: the live public pages of eranos.ta-amps.workers.dev and agora.ta-amps.workers.dev, and a local Eranos and Tessera run with scripted agents and synthetic data. The reveal board shows what the local production Tessera store held when the board was composed; the render and check receipts were written after it.",
        "title": "Eranos \u00b7 3:00 \u00b7 open captions"
      },
      "passed": true
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  "format": "video_motion.video-qa.v1",
  "mp4_sha256": "a875bbbd75ad1a66e4200c32d0ee337e6a28db49e09a2cff2bb9f02d999172fc",
  "passed": false,
  "plan_sha256": "2e63633b8bd053eed15a1ee54c85e3dd9c0e690eacf96dce0de65dd103e6a630",
  "receipt_sha256": "a8769c4c97e6f52f1408ef2f86253fe30a07ffd0a92eeab3d0738504d935f82c",
  "render_manifest_sha256": "d5824b9d88e6797cf5ea4bc9773717b9a2e6432fa96c2669191d229ea770ad4a",
  "sequence_id": "eranos-3m-open-captions"
}