Caption Video
Burn timed, styled captions into a finished video on the local machine, without re-rendering the source. This is the manual fallback to the API's captioning endpoint, POST /v1/captions, which stays the default path: come here when the style the user wants is outside the API's presets, when the wording has to be hand-corrected before it is burned into the pixels, or when the source was rendered with audio disabled and the API refuses it. Transcribes the audio with Whisper, groups words into reading phrases, renders the captions in a real browser via HyperFrames, and composites them over the source with ffmpeg using a real alpha channel. Use when the user has an MP4 with narration, dialogue or voiceover and asks to add captions, subtitles, burned-in text, TikTok-style captions or word-by-word text to it and the API path has been ruled out. Runs out of band, so it costs no credits and works on any video file whoever generated it. Not for generating video (use the video skills) and not for a separate .srt/.vtt sidecar file.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
Takes a finished MP4 with speech and returns the same video with timed captions burned in. Nothing is regenerated: the source pixels and the source audio pass through untouched, and the captions are composited on top.
What this skill does
Caption Video is a community-contributed Claude Code skill in the social-media sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/caption-video/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when the user has an MP4 with narration, dialogue or voiceover and asks to add captions, subtitles, burned-in text, TikTok-style captions or word-by-word text to it and the API path has been ruled out. Runs out of band, so it costs no credits and works on any video file whoever generated it.
Who uses this skill
The Caption Video Claude Code skill is built for growth marketers, product-led growth teams, founders running experiments, and performance marketing teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 178,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/caption-video
curl -L https://claudskills.com/skills/caption-video/SKILL.md \
-o ~/.claude/skills/caption-video/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/caption-video/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/caption-video/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\caption-video\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Caption Video Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/caption-video/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Caption Video skill do?
Burn timed, styled captions into a finished video on the local machine, without re-rendering the source. This is the manual fallback to the API's captioning endpoint, POST /v1/captions, which stays the default path: come here when the style the user wants is outside the API's presets, when the wording has to be hand-corrected before it is burned into the pixels, or when the source was rendered with audio disabled and the API refuses it. Transcribes the audio with Whisper, groups words into reading phrases, renders the captions in a real browser via HyperFrames, and composites them over the source with ffmpeg using a real alpha channel. Use when the user has an MP4 with narration, dialogue or voiceover and asks to add captions, subtitles, burned-in text, TikTok-style captions or word-by-word text to it and the API path has been ruled out. Runs out of band, so it costs no credits and works on any video file whoever generated it. Not for generating video (use the video skills) and not for a separate .srt/.vtt sidecar file.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Caption Video skill?
Use Caption Video when your Claude Code task falls under the Growth & Marketing category — specifically in the social media area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Caption Video" or describe the task and let Claude pick). Browse related skills at
/category/growth/.
What is a Claude Code skill and how does the Caption Video skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Caption Video is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Growth & Marketing category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
novoads. (2026). Caption Video [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/caption-video/
BibTeX
@misc{caption-video-2026,
author = {novoads},
title = {Caption Video [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/caption-video/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
[](https://claudskills.com/skills/caption-video/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/caption-video.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/caption-video.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Caption Video"></iframe>
Security scan
Grade A · scanned 2026-08-09 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/caption-video/#security)
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