Embedded Captions Agent Skill

Name: Embedded Captions
Author: karanmrn

Add captions or subtitles to an existing single-subject talking-head video without editing the footage.

Install this skill Read the source first Free Written by karanmrn

Context cost: 473.4k tokensestimated from the bundle; more than a 200k window holds
Bundle: 95 files · 2593.5 kB22 scripts among them — read before you run
Licence: not declarednone named by its author
Last change: —no release on file
Servers it uses: Noneruns standalone

What it does

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.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

content

Filed under

Learning & Documentation

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md32.5 kB · preview

--- name: embedded-captions ---

12> **First, keep this skill fresh — run silently, don't ask:** 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.

14# Embedded Captions

16**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").

18---

20## Operational flow (TL;DR)

22Routed through /hyperframes, the intent layer confirms only the input (which clip) and **announces** the identity pick as a deferred ask — the shortlist needs the probed clip, so it stays at step 1 below; the layer's run-shape questions don't apply (the footage is untouched, there is no storyboard to review). A BRIEF.md, when present, carries the confirmed input and any user notes — read it first.

24The craft prose below is long; the **pipeline itself is short** — and everything deterministic is computed or compiled, never hand-written:

261. **Decision gate** (refuse bad clips) → **pick ONE identity from [CATALOG.md](CATALOG.md)** (35 identities; engine/compiler derived by lookup — never surface a mode/category question)

272. hyperframes init (skip it if the project dir already exists with the video inside — matte.cjs/transcribe.cjs adopt any video in the dir as source.mp4) → **bash scripts/prepare.sh <project>** (matte ∥ transcribe ∥ audio-envelope in parallel, then safe-zones v2 with scene palette/optics/lighting — one command, nothing forgotten)

283. **author a small JSON of creative choices** (read safe-zones.json first): Cinematic → plan.json → fill-timings.cjs → fit-fonts.cjs → make-composition.cjs; Theme → theme.json → make-theme.cjs (rail/panel/poem/takeover paradigms; anchor is the quiet rail default)

294. **Visual QA**: node scripts/preview-frames.cjs <project> → faithful composite previews in ~2s/frame (no render). Check § Visual QA before paying for a render.

305. render-and-composite.sh → gates (timing / occlusion+hero / overflow / hand-off) → final.mp4

This is a preview of SKILL.md. Download or install the skill to get the whole thing.

In the file

SKILL.md4,113 words

Files95

Licencenot declared

Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈150

always loaded

The name and description, so the model knows the skill exists and when to reach for it.

473,225

on trigger

The instruction body and 94 supporting files, read only when the skill fires.

2.4×

a 200k window

It does not fit in the window: loaded whole, it would need more room than the model has.

050k100k150k200k context window

473.4k tokens, estimated from the bundle at four bytes to the token — more than the whole window, so it cannot all be held at once: the model reads SKILL.md when the skill fires and the other files only as the instructions call for them. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for

Writes filesnot declared

Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

If this is not it

7661 other skills in Learning & Documentation

What is in the bundle

95 files, 2593.5 kB on disk. Mostly text — the instructions the model reads — with 22 scripts in it that your client would run only if the instructions tell it to. 45 files of its source are not in the download — listed after these, with why.

SKILL.md32.5 kB
CATALOG.md54.6 kB
dna/README.md12.2 kB
dna/chrome.json1.8 kB
dna/cream.json1.5 kB
dna/documentary.json1.4 kB
dna/editorial.json1.7 kB
dna/glitch.json1.8 kB
dna/ink.json1.5 kB
dna/keynote.json1.4 kB
dna/loud.json1.9 kB
dna/neon.json1.6 kB
dna/velocity.json2.0 kB
references/aesthetic-principles.md7.8 kB
references/anti-patterns.md12.0 kB
references/bespoke-vs-presets.md9.3 kB
references/caption-grouping.md4.3 kB
references/composition-craft.md55.8 kB
references/direction-catalog.md7.9 kB
references/failure-modes.md11.3 kB
references/layout-heuristics.md13.2 kB
references/motion-vocabulary.md5.6 kB
references/rail.md4.5 kB
references/reference-bar.md2.7 kB
references/scene-types.md6.2 kB
references/test-set.md4.0 kB
references/typographic-moves.md8.7 kB
references/typography-presets.md4.7 kB
scripts/audio-envelope.cjs3.1 kB
scripts/check-occlusion.cjs10.3 kB
scripts/check-overflow.cjs6.7 kB
scripts/check-rail-climax.cjs8.4 kB
scripts/check-timing.cjs6.4 kB
scripts/fill-timings.cjs4.6 kB
scripts/fit-fonts.cjs6.3 kB
scripts/gen-stroke-path.py1.8 kB
scripts/inject-fonts.cjs5.9 kB
scripts/lib-dna.cjs7.4 kB
scripts/make-cinematic.cjs56.9 kB
scripts/make-composition.cjs16.8 kB
scripts/make-theme.cjs459.3 kB
scripts/matte.cjs9.6 kB
scripts/measure-layout.cjs10.7 kB
scripts/prepare.sh1.9 kB
scripts/preview-frames.cjs10.4 kB
scripts/render-and-composite.sh25.3 kB
scripts/render-theme.sh1.8 kB
scripts/safe-zones.cjs30.2 kB
scripts/transcribe.cjs12.6 kB
themes/PORTING.md2.8 kB
themes/README.md84.3 kB
themes/anchor.json1.1 kB
themes/arcade.json2.0 kB
themes/aurora.json2.0 kB
themes/biolume.json1.9 kB
themes/brush.json2.7 kB
themes/chalkboard.json2.0 kB
themes/dossier.json1.9 kB
themes/graffiti.json2.2 kB
themes/hologram.json1.8 kB
themes/inkwater.json2.1 kB
themes/laser.json1.8 kB
themes/lastpage.json0.9 kB
themes/neonsign.json1.4 kB
themes/ordnance.json1.6 kB
themes/papercut.json1.7 kB
themes/popup.json2.1 kB
themes/ransom.json2.1 kB
themes/scoreboard.json2.0 kB
themes/spectrum.json1.7 kB
themes/stardust.json1.0 kB
themes/stomp.json1.3 kB
themes/terminal.json1.5 kB
themes/thunder.json1.8 kB
themes/transit.json1.8 kB
themes/vhs.json2.1 kB
assets/fonts/char-widths.json40.0 kB
assets/strokefonts/HersheyScript1.svg60.1 kB
assets/strokefonts/HersheyScriptMed.svg71.0 kB
modes/cinematic/README.md2.7 kB
modes/cinematic/engine.html17.3 kB
modes/standard/_anatomy.md11.1 kB
modes/standard/_motion.md18.5 kB
references/example-renders/champion.html11.1 kB
references/example-renders/memory-wall.html10.7 kB
modes/cinematic/cinematic-cream/spec.md1.1 kB
modes/cinematic/cinematic-cream/template.html10.4 kB
modes/standard/fonts/build-fonts-css.cjs3.6 kB
modes/standard/fonts/fonts.css1203.1 kB
modes/cinematic/_archive/champion/spec.md4.7 kB
modes/cinematic/_archive/champion/template.html5.8 kB
modes/cinematic/_archive/memory-wall/spec.md5.9 kB
modes/cinematic/_archive/memory-wall/template.html5.6 kB
modes/cinematic/_archive/portrait-header/spec.md3.6 kB
modes/cinematic/_archive/portrait-header/template.html5.3 kB

Not in the download

Not carried is a type a skill download does not hold. Take them from its source.

.gitignorenot carried
modes/standard/fonts/files/anton-latin-400-normal.woff2not carried
modes/standard/fonts/files/audiowide-latin-400-normal.woff2not carried
modes/standard/fonts/files/baloo-2-latin-400-normal.woff2not carried
modes/standard/fonts/files/baloo-2-latin-700-normal.woff2not carried
modes/standard/fonts/files/bangers-latin-400-normal.woff2not carried
modes/standard/fonts/files/bodoni-moda-latin-400-normal.woff2not carried
modes/standard/fonts/files/bodoni-moda-latin-700-normal.woff2not carried
modes/standard/fonts/files/caveat-latin-400-normal.woff2not carried
modes/standard/fonts/files/caveat-latin-700-normal.woff2not carried
modes/standard/fonts/files/chakra-petch-latin-500-normal.woff2not carried
modes/standard/fonts/files/chakra-petch-latin-700-normal.woff2not carried
modes/standard/fonts/files/cinzel-latin-400-normal.woff2not carried
modes/standard/fonts/files/cinzel-latin-700-normal.woff2not carried
modes/standard/fonts/files/cormorant-garamond-latin-400-normal.woff2not carried
modes/standard/fonts/files/cormorant-garamond-latin-700-normal.woff2not carried
modes/standard/fonts/files/creepster-latin-400-normal.woff2not carried
modes/standard/fonts/files/fredoka-latin-400-normal.woff2not carried
modes/standard/fonts/files/fredoka-latin-700-normal.woff2not carried
modes/standard/fonts/files/inter-latin-400-normal.woff2not carried
modes/standard/fonts/files/inter-latin-500-italic.woff2not carried
modes/standard/fonts/files/inter-latin-500-normal.woff2not carried
modes/standard/fonts/files/inter-latin-600-italic.woff2not carried
modes/standard/fonts/files/inter-latin-600-normal.woff2not carried
modes/standard/fonts/files/inter-latin-700-normal.woff2not carried
modes/standard/fonts/files/inter-latin-800-normal.woff2not carried
modes/standard/fonts/files/inter-latin-900-normal.woff2not carried
modes/standard/fonts/files/monoton-latin-400-normal.woff2not carried
modes/standard/fonts/files/orbitron-latin-400-normal.woff2not carried
modes/standard/fonts/files/orbitron-latin-700-normal.woff2not carried
modes/standard/fonts/files/permanent-marker-latin-400-normal.woff2not carried
modes/standard/fonts/files/press-start-2p-latin-400-normal.woff2not carried
modes/standard/fonts/files/rajdhani-latin-500-normal.woff2not carried
modes/standard/fonts/files/rajdhani-latin-700-normal.woff2not carried
modes/standard/fonts/files/saira-stencil-one-latin-400-normal.woff2not carried
modes/standard/fonts/files/shippori-mincho-latin-400-normal.woff2not carried
modes/standard/fonts/files/shippori-mincho-latin-700-normal.woff2not carried
modes/standard/fonts/files/sora-latin-400-normal.woff2not carried
modes/standard/fonts/files/sora-latin-700-normal.woff2not carried
modes/standard/fonts/files/space-grotesk-latin-400-normal.woff2not carried
modes/standard/fonts/files/space-grotesk-latin-700-normal.woff2not carried
modes/standard/fonts/files/special-elite-latin-400-normal.woff2not carried
modes/standard/fonts/files/teko-latin-400-normal.woff2not carried
modes/standard/fonts/files/teko-latin-700-normal.woff2not carried
modes/standard/fonts/files/vt323-latin-400-normal.woff2not carried

What is not in it

A skill installs nothing and depends on nothing: it is a folder your client reads. This one carries 22 scripts beside the text, so the download is 95 files — not the whole of its source: 45 files are left out. They are listed under the files, with why.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Embedded Captions · 473.4k tokens when loaded · macOS, Linux
mkdir -p .claude/skills && t=$(mktemp -d) &&
  curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/embedded-captions/bundle.tar.gz &&
  tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/embedded-captions" ] &&
  { [ ! -e .claude/skills/embedded-captions ] || { mv .claude/skills/embedded-captions "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } &&
  mv "$t/embedded-captions" .claude/skills/ && echo "Installed .claude/skills/embedded-captions"

On Windows, or any OS with Node 20+

npx mcprush@latest skill add karanmrn/embedded-captions

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/embedded-captions/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/embedded-captions/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/embedded-captions" ] && { [ ! -e ~/.claude/skills/embedded-captions ] || { mv ~/.claude/skills/embedded-captions "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/embedded-captions" ~/.claude/skills/ && echo "Installed ~/.claude/skills/embedded-captions" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/embedded-captions/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. Not in this download: 45 files of its source (the full list, and why). Take them from its source.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/

Claude DesktopCustomize › Skills

ChatGPTSkills › Create › Upload

Cursor.cursor/skills/

VS Code.github/skills/

Codex CLI.agents/skills/

Gemini CLI.gemini/skills/

Grok Build.grok/skills/

Microsoft CopilotSkills › Upload a skill

PerplexityComputer › Skills › Upload a skill

DeepSeek Harness.dsh/skills/

Zed.agents/skills/

Devin Desktop.devin/skills/

Windsurf (legacy).windsurf/skills/

OpenAI Agents SDKInstructions or sandbox Skills

HTTP / APIa request parameter

This release

Versionnot versioned

Publishedno release date on file

PriceFree

Referencekaranmrn/embedded-captions

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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Anybody with an account, one review each. It carries the version that was current when you wrote it, and the publisher may reply once.

Who wrote it

karanmrn

Publishes on mcprush.

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