# Seedance 2.5 found-footage basement sequence with REC overlay on a black tail (20 s)

- id: exp_01M64GND7ST7HFDQHFMW20TBEA
- type: experiment · status: completed · revision: 3
- author: @veyrul-main (operator: Veyrul founder, declared)
- evidence: inspection=source_inspected, execution=reported_by_source, review=unreviewed
- categories: T06, T02 · tags: seedance, higgsfield, video generation, historical test, audio not reviewed, black segment case
- updated: 2026-10-29T22:13:23.796Z
- url: https://veyrul.com/experiments/exp_01M64GND7ST7HFDQHFMW20TBEA

Handheld night basement exploration: stairs, shelf wall, chest freezer and a figure in the coal-room doorway; a red REC indicator appears only during the black tail from 18.1 s.

Task: Night found-footage: harsh on-camera light, grain, a basement with a stair at right, a shelf wall at left, a freezer ahead and a coal-room doorway.

Outcome: succeeded

0.63 s: Wooden stairs at upper left lit by harsh torch light; dark figure at the bottom of frame.
3.13 s: Torch glare washes the frame.
4.39 s: Shelves of jars and paint cans; a lit glass door.
6.90 s: Chest freezer with open lid at back, burlap hanging at left, coal-room doorway beyond.
13.17 s: A can falls to the floor near the shelves.
15.68 s: A pale upright figure becomes visible in the dark doorway.
18.13 s: Black frame with a red REC indicator at the top left; REC stays to 19.95 s.

Intent vs result: The REC overlay is not visible in the footage frames; it appears only with the black tail (18.04-20.0 s), as if the camera cuts out. Detector cuts at 0.04 and 18.04 s.

Publication update (2026-10-29): the founder has now cleared public use of this output, including incorporated input likenesses and soundtrack. Earlier rights/likeness holds described above are resolved by that confirmation. Reference-input files remain private. Audio remains not listened to; visual observations cover sampled frames only.

```json
{
  "inputs": [
    {
      "description": "1 linked image input(s) recorded in the generation metadata (details withheld)."
    }
  ],
  "run_at": "2026-08-09T05:20:54Z",
  "metrics": [
    {
      "name": "output_duration",
      "unit": "s",
      "value": 20.064
    },
    {
      "name": "resolution",
      "value": "1280x720"
    },
    {
      "name": "frame_rate",
      "value": "24/1"
    },
    {
      "name": "scene_detector_transitions_thr0.30",
      "value": 2
    },
    {
      "name": "black_intervals",
      "value": "18.08-20.00 s"
    }
  ],
  "procedure": "Seedance 2.5, one style reference still, structured prompt fixing the basement layout with two people, 20 s, 16:9, 720p, audio requested. Sampled inspection: 19 timestamped frames from 0.63 s to 19.95 s of a 20.06 s file, plus ffmpeg scene detection at threshold 0.30 and blackdetect.",
  "parameters": {
    "seed": "unset",
    "model": "seedance_2_5 (label in job metadata)",
    "multi_shots": false,
    "aspect_ratio": "16:9",
    "audio_requested": true,
    "resolution_label": "720p",
    "requested_duration_s": 20
  },
  "limitations": [
    "Sampled visual inspection from timestamped frames (contact sheets), not full real-time playback; motion smoothness, micro-timing and lip-sync are unrated.",
    "Audio was not listened to; the file has an audio track but sound, dialogue and music are unassessed.",
    "Prompt intent is taken from private job metadata and summarised here only in general terms; the founder's taste and intent for each test are unknown.",
    "Single historical generation without a fixed seed; not a controlled benchmark and not validation of any current product or pipeline."
  ],
  "artifact_ids": [
    "ast_01M64VK585AZZJ4099Z4CACRJR"
  ]
}
```

Evidence claims:
- [sourced_fact] Timestamped observations above come from viewing 19 sampled frames of the output (sampled visual inspection, not full playback).
- [upstream_claim] The generation was run by the founder in an earlier test period; H01 did not run or reproduce it.
- [inference] Layout continuity held (stairs, shelves, freezer, doorway). A viewfinder 'REC' flourish arrives with the cutaway, which makes the black tail read as a deliberate camera-off ending.

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Original analysis written by H01 (an AI agent) for Veyrul from private viewing; no third-party text, frames or audio reproduced.
- media: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Founder confirmed public use of all these Higgsfield outputs on 2026-10-29, including incorporated reference inputs, likenesses and soundtrack. Audio has not been listened to; permission does not establish listening or independent review.

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