[teamai] Push 87 resource(s) from XingfenD

2026-09-10 16:10:45 +08:00
parent 425c9c078a
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+# LUT library (authoring)
+
+`index.json` is the agent-consumed catalog of color-grade looks. Each entry resolves
+on demand — no `.cube` bodies are committed to the repo.
+
+Each look has:
+
+- `id`, `description`, `tags`, `intensity` — matching + application metadata.
+- `url` (optional) — a hosted `.cube` downloaded, validated, and frozen at resolve
+  time, exactly like bgm/image assets.
+- `params` (optional) — a deterministic `buildCube` spec used offline (`--local-only`)
+  or as a fallback if the `url` download/validation fails.
+
+An entry needs at least one of `url` or `params`; prefer both (CDN url with a params
+fallback) so resolution is never blocked on the network.
+
+## Hosting a new look (operators)
+
+1. Generate the `.cube` (e.g. `resolve -t lut --params '{...}'` or a graded export).
+2. Upload it to the public CDN origin bucket:
+
+   ```
+   aws s3 cp <id>.cube s3://heygen-public/luts/<id>.cube
+   ```
+
+   It is then served at `https://static.heygen.ai/luts/<id>.cube` (CloudFront).
+
+3. Add an entry to `index.json` with that `url` (and ideally a `params` fallback).
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+{
+  "notes": "Look entries resolve on-demand from a CDN .cube `url` (downloaded + frozen, like bgm/image); `params` is a deterministic buildCube fallback used offline (--local-only) or if the download/validation fails. No .cube bodies are committed. See README.md to author or host a new look.",
+  "looks": [
+    {
+      "id": "teal-orange-blockbuster",
+      "description": "Teal shadows and warm orange highlights for blockbuster-style cinematic footage.",
+      "tags": ["teal", "orange", "blockbuster", "cinematic", "split tone", "movie"],
+      "intensity": 0.85,
+      "url": "https://static.heygen.ai/luts/teal-orange-blockbuster.cube",
+      "params": {
+        "contrast": 0.18,
+        "saturation": 0.08,
+        "vibrance": 0.12,
+        "splitTone": {
+          "intensity": 0.62,
+          "balance": 0.52,
+          "shadows": [-0.04, 0.05, 0.09],
+          "highlights": [0.1, 0.04, -0.03]
+        }
+      }
+    },
+    {
+      "id": "bleach-bypass",
+      "description": "High-contrast desaturated bleach bypass look with strong blacks.",
+      "tags": ["bleach", "bypass", "desaturated", "high contrast", "gritty", "film"],
+      "intensity": 0.8,
+      "url": "https://static.heygen.ai/luts/bleach-bypass.cube",
+      "params": {
+        "blacks": 0.04,
+        "shadows": -0.08,
+        "highlights": 0.08,
+        "whites": 0.18,
+        "contrast": 0.55,
+        "temperature": -0.02,
+        "saturation": -0.72,
+        "vibrance": -0.25
+      }
+    },
+    {
+      "id": "film-fade",
+      "description": "Soft faded film wash with lifted blacks and warm highlights.",
+      "tags": ["film", "fade", "faded", "wash", "warm", "vintage"],
+      "intensity": 0.75,
+      "url": "https://static.heygen.ai/luts/film-fade.cube",
+      "params": {
+        "blacks": 0.35,
+        "shadows": 0.18,
+        "highlights": 0.02,
+        "whites": -0.03,
+        "contrast": -0.28,
+        "temperature": 0.16,
+        "saturation": -0.12,
+        "vibrance": -0.08
+      }
+    }
+  ]
+}