What makes embedded-captions notable?

2.3K downloads. Trust evidence available

How should embedded-captions be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this agent.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

agentCLAWHUBUnverified

embedded-captions

Add captions or subtitles to an existing single-subject talking-head video without editing the footage. Use for plain verbatim captions, cinematic captions embedded behind the subject, VFX captions, “炸/特效/酷炫字幕,” or a named identity from the 35-style catalog. Route by visual identity, not by backend engine. The quiet `anchor` rail is the default; embed every word only when the user explicitly wants a fully cinematic treatment. The workflow runs locally end to end, including transcription and subject matting; split multi-shot footage before applying it. Skill: embedded-captions Owner: heygen-com Summary: Add captions or subtitles to an existing single-subject talking-head video without editing the footage. Use for plain verbatim captions, cinematic captions embedded behind the subject, VFX captions, “炸/特效/酷炫字幕,” or a named identity from the 35-style catalog. Route by visual identity, not by backend engine. The quiet anchor rail is the default; embed every word only

OpenClaw

View on ClawHub Homepage

Rank

Safety

Downloads

2.3k

Updated

Oct 9, 2026

Version

1.0.25

Source

CLAWHUB

About

What it does, and when to use it.

Capability contract not published. No trust telemetry is available yet. 2.3K downloads reported by the source. Last updated 10/9/2026.

Avoid when

Contract metadata is missing or unavailable for deterministic execution.

Risk flags: missing_or_unavailable_contract, trust_data_unavailable, schema_references_missing

Public facts

Every fact links back to the source it came from.

Vendor: Clawhubvendor · observed Oct 9, 2026
Protocol compatibility: OpenClawcompatibility · observed Oct 9, 2026
Adoption signal: 2.3K downloadsadoption · observed Oct 9, 2026
Latest release: 1.0.25release · observed Oct 4, 2026
Handshake status: UNKNOWNsecurity

Install and run

Setup complexity: low.

clawhub skill install s17fpgb0p797dzkbtbrxw5x1hh89qs64:embedded-captions

Setup complexity is classified as HIGH. You must provision dedicated cloud infrastructure or an isolated VM. Do not run this directly on your local workstation.
Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Contract: missing

curl -s "https://www.xpersona.co/api/v1/agents/clawhub-heygen-com-embedded-captions/snapshot"

Documentation

CLAWHUB

160,000 characters of source documentation, loaded on request.

Extracted files

5 files captured from the source.

SKILL.md

---
name: embedded-captions
description: >
Add captions or subtitles to an existing single-subject talking-head video without editing the
footage. Use for plain verbatim captions, cinematic captions embedded behind the subject, VFX
captions, “炸/特效/酷炫字幕,” or a named identity from the 35-style catalog. Route by visual
identity, not by backend engine. The quiet `anchor` rail is the default; embed every word only
when the user explicitly wants a fully cinematic treatment. The workflow runs locally end to end,
including transcription and subject matting; split multi-shot footage before applying it.
---

**Plugin installs:** Before setup or freshness commands, follow [plugin execution rules](../hyperframes/references/plugin-installation.md) when this skill is inside a HyperFrames plugin. Standalone installs keep the update instructions below.

> **First, keep this skill fresh — confirm with the user before running:** `npx hyperframes skills update embedded-captions`. A fast no-op when everything is current; otherwise it refreshes this skill plus the core domain skills it depends on before you rely on them.

# Embedded Captions

**One catalog, picked up front** ([CATALOG.md](CATALOG.md) — 35 identities; the engines behind it are backend detail). **Standard** (default) builds a clean verbatim **rail** (lower-third subtitle carrying most text) + an **embed** climax composited _into_ the scene behind the subject at the peak. **Cinematic** is pure embed — no rail, every caption composited behind the subject (hero typography, accumulation, occlusion as the effect). **Theme** is a complete themed constitution — body paradigm × hero setpiece × front fx × plate reaction, composed from registries ([themes/README.md](themes/README.md)): `ordnance` `terminal` `neonsign` `stardust` `stomp`. Most explainer / voiceover is **Standard**; **embed is the scarce, earned peak** — embedding every word is the common mistake; Theme is for VFX-grade asks ("炸", "特效", "像 AE 做的").

---

## Runtime prerequisites

Plugin installs use the bundled, manifest-pinned CLI for matting, transcription,
and rendering; no source checkout is required. The local preview and caption
measurement helpers also need Sharp, Puppeteer (with its Chromium browser), and
GSAP. Install these in the **caption project**, not inside the read-only plugin:

```bash
npm install --prefix <project> --save-dev --save-exact [email protected] [email protected] [email protected]
```

Keep the project's lockfile. If these dependencies already exist, use its locked
versions instead of overwriting them. Bash and FFmpeg/ffprobe must be on PATH.
Matting and transcription may download their own models on first use.

Rendering waits for the CLI to exit successfully before compositing. The old
`HF_TIMEOUT_S` shell watchdog is no longer used: a large partial file is not proof
that rendering finished. An explicit built-checkout argument or `HYPERFRAMES_ROOT`
selects the contributor CLI instead of the plugin pin. Cancel a stalle

dna/README.md

# DNA registry — pick a visual language, not a preset

A **DNA** is a complete, art-directed visual language: typeface, palette logic, motion
grammar, and hero orchestration. It **parameterizes per scene** instead of shipping a
fixed look: the accent color is sampled from THIS scene, the contact shadow falls along
THIS scene's light, embed text blur matches THIS scene's depth-of-field, and the hero's
entrance amplitude follows how hard the word was actually spoken (RMS).

This replaces the template grab-bag. Six deep languages × scene adaptation beats 54
shallow presets — every render is already fitted to its footage.

## Category lock (deliveries field, enforced by the compilers)

Every classic DNA's **home is Cinematic (column)** — that is where all ten were
built and validated. (Standard/rail mode was retired 2026-06-12; the verbatim-rail
need is served by the `anchor` theme. The old rail combos are archived outside
this repo and are not distributed with the skill.)

## The ten

| DNA             | Register       | Scene fit                                       | Voice                                                                                                                                                                       |
| --------------- | -------------- | ----------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **cream**       | premium-warm   | dark / mid warm scenes (band luma < 150)        | Inter, warm cream, screen blend, glowing emergence hero. The poetic default.                                                                                                |
| **ink**         | premium        | **bright scenes (band luma > 150)**             | Inter, near-black, multiply blend — type reads as _printed on_ the wall. Fixes the bright-scene hole.                                                                       |
| **editorial**   | editorial-luxe | introspective / fashion / poetic, mid-dark      | Bodoni Moda, bone, _lowercase italic hero_ — magazine elegance over shout.                                                                                                  |
| **keynote**     | tech-premium   | product / launch / founder updates              | Inter 800, opaque white, line-wipe reveals, hero wipes UP. Stillness = confidence.                                                                                          |
| **documentary** | formal         | interviews, serious subject matter              | Inter, bone, **burn-in reveals**, no hero. Gravitas IS the style.                                                                                                           |
| **loud**        | loud           | hype / sport / music / social                   | Anton, scene-sampled accent hero, single-unit slam + caption-layer ripple; **body announc

modes/cinematic/README.md

# Cinematic mode (pure embed) — one engine, six DNAs

> Cinematic mode compiles **[../../dna/](../../dna/README.md)** through
> **[engine.html](engine.html)** (`make-composition.cjs`). The old per-template HTML
> shells are retired — `cinematic-cream` maps to `dna: "cream"` automatically; the other
> archived templates (memory-wall / champion / portrait-header, in [\_archive/](_archive/))
> remain as design references only.

Use this mode for pure-embed asks (no rail): brand film, hype, social reel, showcase.
The **DNA** locks the visual language (type, palette scheme, blend, motion grammar, hero
three-act); **safe-zones v2** parameterizes it to the scene (sampled accent, light-
direction contact shadow, depth-match blur); **the agent decides layout only** (planes,
blocks, per-line typography within the DNA).

## Workflow

1. `bash scripts/prepare.sh <project>` → matte ∥ transcript ∥ envelope → safe-zones v2
2. Pick a DNA ([../../dna/README.md](../../dna/README.md)): bright hero band → `ink`,
   else by register (cream / editorial / keynote / documentary / loud). Recommend, let
   the user pick.
3. Author `<project>/cinematic.json` — `"dna": "<name>"` + thought-blocks (schema:
   `scripts/make-cinematic.cjs` header)
4. `node scripts/make-cinematic.cjs <project>` → plan.json → engine-compiled index.html
5. `node scripts/preview-frames.cjs <project>` → § Visual QA (failure checks + the 5
   positive checks in [../../references/reference-bar.md](../../references/reference-bar.md))
6. `bash scripts/render-and-composite.sh <project>` → gates → final.mp4

## What the engine generates (never author these)

- word timings from the transcript; accumulate-within-block / page-flip-between-blocks
- the hero hand-off + **three-act orchestration** (dim → RMS-coupled per-letter entrance
  → breathe + glow), per the DNA's `hero` block
- scene tokens: `--accent` (sampled), contact shadow, depth blur
- reading order, re-slot from measured heights, hero size/collision post-pass

## What you DON'T do

- Override `.cap` color / blend / shadow / filter / motion curves — that's the DNA.
  Scene fights the look → pick a different DNA (bright → `ink`), never recolor.
- Hand-position the hero into a clean margin (it belongs ON the subject, ~30–55%
  occluded — safe-zones `heroBands.best`).
- Add full-frame grades/textures over the footage (hard rule: the video ships untouched).

## Adding a DNA

`dna/<name>.json` — copy one, change the voice (see [../../dna/README.md](../../dna/README.md)
§ Adding). The engine consumes it with no code change. A DNA must be a distinct voice
with a reason to exist, not a recolor.

themes/README.md

# THEME mode — composed visual constitutions

Theme mode is the third compiler (`scripts/make-theme.cjs`), beside Standard and
Cinematic. It exists because "mode" was a bundle of orthogonal axes pretending
to be one switch. A theme DNA composes its identity from registries implemented
ONCE in the compiler — **paradigms are the unit of code; DNAs are the unit of
identity**. A new look is a JSON file; only a genuinely new paradigm/setpiece
(rare) touches the compiler.

```
theme DNA = body PARADIGM   how the transcript surface lives
          × body LAYER      fg-alpha (rail.html channel) | bg-embed
          × hero SETPIECE   the climax choreography
          × front FX        flash / rings / sparks / scanband / crowdflash / paflash (fg, over subject)
          × PLATE budget    charge-dim (in-page) + punch/shake/grain (_postfx.sh)
          × LINKAGES        declarative theme interactions
```

Standard and Cinematic were, in retrospect, two fixed points of this space.
Standard is now RETIRED (2026-06-12): its rail×embed-climax point is served by
the `anchor` theme (rail paradigm × settle setpiece — the quiet default).
Cinematic remains a separate compiler; do not re-implement it as a theme yet.

## Unification roadmap (strangler fig — interface first, engines later)

The user-facing model is already unified (SKILL.md Step 0): one catalog of
LOOKS; classic looks pick a DELIVERY (rail | column), themed looks bind their
own. "Standard/Cinematic" are delivery/compiler names, not modes. Remaining
phases, each gated on need — never rewrite for tidiness alone:

- **Phase 2 — one authoring schema.** `lines`/`minors`/`hero` are already
  ~90% shared between standard.json and theme.json; a router that translates a
  single `caption.json` into the engine-specific file removes the last
  user-visible seam. cinematic.json's blocks/planes are the odd one — map the
  common fields, pass engine-specific ones through.
- **Phase 3 — engine convergence.** Port a classic delivery into make-theme
  ONLY when something forces it (e.g. a classic DNA wants a plate budget or a
  setpiece). Acceptance bar: blind A/B on the cap_multi regression scenes vs
  the old compiler — swap engines only when indistinguishable or better. Until
  then the old compilers are the reference implementation of 8 rounds of
  validated typography (lockup/orbit, multi-climax, ratio-lock, per-plane
  legibility, occlusion adjudication) — that machinery is the moat, not debt.

## Body paradigms (registry)

| paradigm      | surface

_meta.json

{
  "ownerId": "kn77d06grj6xqp3dqwkk4bavhn89pegt",
  "slug": "embedded-captions",
  "version": "1.0.25",
  "publishedAt": 1791142135378
}

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