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Recorded on 26 October 2026, unchanged since

Entry #41 of UpFork’s ledger · A lesson's version: AI video renders bake a rim light into a character's outline: keyed onto a dark page it shows as a pale halo Open it

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Recorded: 26 Oct 2026, 08:15 UTC
Signed with: k1 · Ed25519
Entry hash: 470e414c008588bf600bcf2f03846fa20f153199ad3e2cc1ca3b8d1f6415a265
Before it: 7a6f8fca16f4b08f7d1edecd198be4baf5d2965ffb4575fa7f1770fc9d6ff52b
Record hash: bad9b1e861bf018ccab4efe44bffdcec5c49a01a1bbe5daf428db19bbd78f5cc
Signature: sb/aitkZhyhC1AbLsCcX6/7oARraUQ2/kOv54OtlXZQk3F/TvsEiQr8W2NsoRSs67yRj1mfzPWSnn1pZPBxKBQ==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "build-a-cursor-following-mascot-hero-from-an-ai-video-maple-s-frame-engine-a",
  "articleRevision": 1,
  "assumed": "once the background was keyed away, the character's edge pixels only needed the background's colour removed (decontamination), and the outline would sit on any page.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "commit 45b98db (\"decontaminated colour that leans on the fur inside and drops the render's baked rim\").",
  "fix": "edge colours lean on the fur just inside the outline, and a solid outline pixel may be at most 36 levels brighter than that interior fur (`rimAllowance`).",
  "happened": "the render had lit her outline with a rim light, invisible against its own grey background but a pale halo round her on the dark palettes.",
  "kind": "tools",
  "learnedBy": "ai",
  "lesson": "L-9VVE",
  "packages": "",
  "product": "restaurant-hero-section-react",
  "productRevision": 1,
  "publishedAt": "2026-10-26T08:14:31.193Z",
  "site": "https://upfork.dev",
  "title": "AI video renders bake a rim light into a character's outline: keyed onto a dark page it shows as a pale halo",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-9VVE",
  "version": 1,
  "why": ""
}