Manim Video Production
browser-use/video-use
Produces math and technical explainer videos with Manim Community Edition: concept animations, equation derivations, algorithm walkthroughs and data stories.
Renders, previews, validates and burns in production subtitles from QC-passed caption timing, with fixed dark or light caption styles scaled to the video size.
Install Skill Captions
$ npx skills add Pluviobyte/rnskill --skill skill-captions -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Pluviobyte/rnskill skill-captions --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Pluviobyte/rnskill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/skill-captions .claude/skills/skill-captions && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "skill-captions" agent skill from https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captions into .claude/skills/skill-captions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-captions", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captionsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Pluviobyte/rnskill --skill skill-captions -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Pluviobyte/rnskill skill-captions --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Pluviobyte/rnskill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/skill-captions .agents/skills/skill-captions && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "skill-captions" agent skill from https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captions into .agents/skills/skill-captions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-captions", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Pluviobyte/rnskill --skill skill-captions -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Pluviobyte/rnskill skill-captions --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Pluviobyte/rnskill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/skill-captions .cursor/skills/skill-captions && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "skill-captions" agent skill from https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captions into .cursor/skills/skill-captions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-captions", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Pluviobyte/rnskill.git --path skills/skill-captions--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Pluviobyte/rnskill --skill skill-captions -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Pluviobyte/rnskill skill-captions --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Pluviobyte/rnskill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/skill-captions .gemini/skills/skill-captions && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "skill-captions" agent skill from https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captions into .gemini/skills/skill-captions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-captions", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Pluviobyte/rnskill skill-captionsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Pluviobyte/rnskill --skill skill-captions -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Pluviobyte/rnskill.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/skill-captions .github/skills/skill-captions && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "skill-captions" agent skill from https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captions into .github/skills/skill-captions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-captions", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Pluviobyte/rnskill --skill skill-captions -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Pluviobyte/rnskill skill-captions --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Pluviobyte/rnskill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/skill-captions .opencode/skills/skill-captions && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "skill-captions" agent skill from https://github.com/Pluviobyte/rnskill/tree/main/skills/skill-captions into .opencode/skills/skill-captions/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-captions", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
skill-captions- GitHub stars
- 1.6k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 429 words
- Files
- 81 (incl. scripts, references, assets)
- Skills in repo
- 45
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Renders, previews, validates and burns in production subtitles from QC-passed caption timing, with fixed dark or light caption styles scaled to the video size.
- Works in 8 steps: Lock the final narration audio or final… → Run ra-audio-to-subtitles unless the… → Require caption-qc.json to report… → …
- Burning consistent subtitles into a finished video from real word timestamps
- SKILL.md covers Required workflow, Registered styles, Commands and Hard rules, plus 1 more section
- Calls python3
What it does
The skill separates subtitle timing from subtitle appearance. A companion skill, `ra-audio-to-subtitles`, owns speech recognition, phrase grouping, timestamps, SRT and VTT files and a `caption-qc.json` report; this one owns typography, panel geometry, fixed anchoring, previews, overlay rendering, burn-in and render checks. It never estimates timing from character count, scene length or text-to-speech segment length.
The workflow locks the final audio or video, requires the QC report to show a pass, picks a style from the registry, renders a still preview, checks it against the layout QC notes, renders the captioned copy while keeping the clean video and portable subtitle files, and runs `validate_caption_render.py`. The `anchor-dark` style, the default, uses a charcoal translucent rounded panel with warm white text, and `anchor-light` swaps in a warm-white panel; metrics scale with target height, so 4K captions are twice their 1080p size.
When your agent uses it
- Burning consistent subtitles into a finished video from real word timestamps
- Previewing caption style and position before rendering a full video
- Fixing caption size, position, shadow or drift, including at 4K
- Switching a video between dark and light translucent caption panels
Example prompts
- “Burn the default captions into final-clean.mp4 using the QC-passed caption files.”
- “Render a still preview of the light caption style before we process the whole video.”
- “The captions look too big on the 4K export; fix the scaling and validate the render.”
Requirements
- Python 3
- Caption timing and a caption-qc.json report that passes QC
- The ra-audio-to-subtitles skill when final word timestamps do not exist yet
Workflow steps
8 steps, taken from the first numbered list in SKILL.md.
- Lock the final narration audio or final merged video.
- Run ra-audio-to-subtitles unless the project already has the canonical
- Require caption-qc.json to report status: pass.
- Select a style from references/style-registry.json. Use anchor-dark
- Generate a representative still preview before rendering a full video.
- Inspect the preview against references/layout-qc.md.
- Render the captioned derivative. Preserve the clean video and portable
- Run scripts/validate_caption_render.py and archive its JSON report.
What it can do on your machine
Read from SKILL.md and the folder at commit 83d1783. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/, which the agent can run.
Shell commands in SKILL.md call:
python3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Skill Captions loads about 1.3k tokens when it runs, and up to ~3.1k if it reads all its reference files. Until then it costs about 128 tokens; SKILL.md has 429 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 429 words (~1,311 tokens).
“Separate subtitle timing from subtitle appearance:”
- name
- skill-captions
Files
SKILL.md and 80 other files (scripts, references, assets) in skills/skill-captions of Pluviobyte/rnskill.
- SKILL.md
- agents/openai.yaml
- assets/style-reference/anchor-dark/anchor-dark-caption-crop.png
- assets/style-reference/anchor-dark/anchor-dark-render-regression-1080p.png
- assets/style-reference/anchor-dark/anchor-dark-render-regression-4k.png
- assets/style-reference/anchor-dark/kimi-reference-32s.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0001.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0002.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0003.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0004.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0005.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0006.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0007.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0008.png
- assets/style-reference/anchor-light/anchor-light-render-regression-1080p-caption-work/cue-0009.png
- … and 66 more
Open the folder on GitHubat commit 83d1783
Compare with similar skills
Skill Captions next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Skill Captions this skillPluviobyte/rnskill | 1.6k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Manim Video Productionbrowser-use/video-use | 28k | 6 repos | ~3k | Automated safety check: Pass | MIT | |
| HyperFrames Animationheygen-com/hyperframes | 59k | 3 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| Brag Launch Videolatent-spaces/brag | 14k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Stitch to Remotion Walkthrough Videosgoogle-labs-code/stitch-skills | 8.4k | 6 repos | ~3.2k | Automated safety check: Notes | Apache-2.0 | |
| Embedded Video Captionsheygen-com/hyperframes | 59k | 3 repos | ~8.6k | Automated safety check: Pass | Apache-2.0 |
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- Official
Stitch to Remotion Walkthrough Videos
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Embedded Video Captions
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Turns a weekly changelog markdown file into a branded HyperFrames video with voiceover, animated mock-UI scenes and captions, using fonts, background and scripts bundled in the skill.
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Audio-Timed Subtitle Generator
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Generates SRT, VTT and caption JSON for final narration audio or a merged video using Volcengine Doubao ASR word timestamps, with a quality gate before delivery.
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Related
Categories
Questions about Skill Captions
What does Skill Captions do?
Renders, previews, validates and burns in production subtitles from QC-passed caption timing, with fixed dark or light caption styles scaled to the video size. The skill separates subtitle timing from subtitle appearance.json` report; this one owns typography, panel geometry, fixed anchoring, previews, overlay rendering, burn-in and render checks.
When should I use Skill Captions?
Skill Captions fits situations like: burning consistent subtitles into a finished video from real word timestamps; previewing caption style and position before rendering a full video; fixing caption size, position, shadow or drift, including at 4K; switching a video between dark and light translucent caption panels.
How do I install Skill Captions in Claude Code?
Run `npx skills add Pluviobyte/rnskill --skill skill-captions -a claude-code`. Or copy the skill folder (skills/skill-captions in Pluviobyte/rnskill) into .claude/skills/skill-captions in your project. Claude Code loads it when a task matches its description.
How do I install Skill Captions in Codex?
Run `npx skills add Pluviobyte/rnskill --skill skill-captions -a codex`. Or copy the skill folder (skills/skill-captions in Pluviobyte/rnskill) into .agents/skills/skill-captions in your project. Codex loads it when a task matches its description.
Can I use Skill Captions in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Pluviobyte/rnskill --skill skill-captions -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-captions, .gemini/skills/skill-captions, .github/skills/skill-captions and .opencode/skills/skill-captions in your project.
What does Skill Captions need to run?
Going by SKILL.md and its folder, Skill Captions needs the command-line tools its instructions call (python3). Our summary lists: Python 3; Caption timing and a caption-qc.json report that passes QC; The ra-audio-to-subtitles skill when final word timestamps do not exist yet.
Does Skill Captions access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Skill Captions safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Skill Captions use?
Skill Captions has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Skill Captions use?
About 1.3k tokens (SKILL.md is roughly 5.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.8k tokens, read only when the agent opens those files.
What are the alternatives to Skill Captions?
Skills that share tags, products or a category with Skill Captions: Manim Video Production (browser-use/video-use, 28k stars), HyperFrames Animation (heygen-com/hyperframes, 59k stars), Brag Launch Video (latent-spaces/brag, 14k stars) and Stitch to Remotion Walkthrough Videos (google-labs-code/stitch-skills, 8.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Skill Captions?
Pluviobyte (a GitHub user) maintains it in Pluviobyte/rnskill, which has 1,636 GitHub stars. The repository holds 45 skills in this directory. The repository was last updated on September 21, 2026.
Source: Pluviobyte/rnskill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.