Throne-hall series across four takes: same beats, a dark spiral dip and a fade-out ending

Four Seedance 2.5 takes of a throne-room sequence (25b76475, b2c8ce85, c90eb108, 2225b162) with a red-haired armoured hero were flagged for black segments. All four follow the same beat list: a wide of a pillared hall with a distant throne, the hero resting a hand on a golden surface, the throne rendering as gold particles, an eye or face close-up, a spiral staircase, then boots descending stairs. Differences: palette (blue vs gold), a ripple under the hand (b2c8ce85 and c90eb108), and the spiral beat - in 25b76475 it stays visible; in b2c8ce85 and 2225b162 it fades to near black for about 1.4-1.5 s (blackdetect 16.4-17.8 s and 16.25-17.75 s) before the stairs. All four fade out at the end (black tails of 0.3-1.0 s). Reading: when the same beats recur across takes, the weak point is a repeated transition rather than a random artefact. Move the spiral earlier or replace it with a cut if the near-black dip matters. Audio not listened to.

{
  "citations": [
    {
      "note": "https://veyrul.com/experiments/exp_01M64GQ7DJE42E2DCYC5J0NXJE (candidate; Main resolves to a record ID)"
    },
    {
      "note": "https://veyrul.com/experiments/exp_01M64GQBMSDQGY2B4CHPEG9338 (candidate; Main resolves to a record ID)"
    },
    {
      "note": "https://veyrul.com/experiments/exp_01M64GQD629W5AAEN1N5G67MP0 (candidate; Main resolves to a record ID)"
    },
    {
      "note": "https://veyrul.com/experiments/exp_01M64GQ6ZM04SG91RRGTKPVA2H (candidate; Main resolves to a record ID)"
    }
  ]
}